somatom sessions 16
TRANSCRIPT
Picture
SOMATOMSessions
No.16/June 2005Stanford University’s 7th Annual International Symposium on Multidetector-Row CT June 15-18, 2005
www.siemens.com/medical
COVER STORYThink Clinical!Page 4
NEWSSOMATOM Sensation – 40-Slice TechnologyPage 12
BUINESSSOMATOM Spirit – “And itruns, and runs, and runs...“Page 15
CLINICAL OUTCOMESsyngo Body Perfusion CT – Differential Diagnosis of a PancreasPage 20
SOMATOM Emotion 6 High Resolution OrthopedicsExaminationPage 24
SCIENCEArchaeology – High-techMeets HistoryPage 33
CUSTOMER CARE
LIFE Educate – A Win-Win SituationPage 35
Highlights
It is Siemens’ goal to remain the trend-setter in Computed Tomography (CT) technology and
clinical applications, and to provide innovative multislice CT and workflow solutions for all clinical
needs – from the cost-optimized SOMATOM® Spirit up to the leading edge SOMATOM Sensation
64. More than 100 of our brand-new multislice SOMATOM Spirit CT scanners are in use all over
the world, from the highlands of Tibet to Milwaukee, USA. Within one year, more than 250
SOMATOM Sensation 64-slice CT scanners have been installed in the world’s leading academic
institutions and in busy hospitals and practices. First peer-reviewed reports in leading medical
and scientific journals definitely substantiate the advantages of Siemens' proprietary z-SharpTM
Technology in neuro, chest, vascular and cardiac CT applications. Moreover, the first SOMATOM
Sensation 40 scanners, providing access to z-Sharp’s benefits at attractive investment levels, are
running successfully in Europe and the USA. And our new SOMATOM Emotion 16, which was
introduced at the ECR 2005 in Vienna, will bring advanced 16-slice CT performance to day-to-
day clinical practice at even lower investment levels. And there is much, much more in the
pipeline…
As the amount of data acquired per study is increasing, high-performance workflow and appli-
cation solutions gain importance. We have devoted most of this issue to discuss the challenges
and solutions for the efficient management of large data sets. Find out about our latest inno-
vations in clinical workflow design for cardio-vascular applications and for highly sensitive early
diagnosis of cancer. Our authors and editors have put together another outstanding collection of
useful information. Join us on a fascinating journey in space and time through the human body.
We are looking forward to your comments, suggestions, and contributions.
Sincerely,
Bernd Ohnesorge, PhD,
Vice President CT Marketing and Sales
Dear Reader,
Bernd Ohnesorge, PhD, Vice President CT Marketing and Sales
2 SOMATOM Sessions 16
EDITOR’S LETTER
SOMATOM Sessions 16 3
CONTENT
COVER STORY4 Think Clinical!
8 The Fast Lane to Cardiac Diagnosis
9 Benefits of Computer-Aided Detection
10 Continuous Software Enhancements
NEWS11 CT on its Way Beyond Slices?
11 Advanced Performance at Low Cost
12 40-Slice Technology
12 LEONARDO in Anatomy Teaching
BUSINESS13 Cardiologists and Radiologists Unite Forces
13 Free Trial Clinical Software
14 Driving Initiatives against Colon Cancer
14 Demo Poster
15 “And it runs, and runs, and runs...“
CLINICAL OUTCOMES16 SOMATOM Sensation 64: Low Dose Cardiac Scanning of a Neonate in one Second
18 SOMATOM Sensation 40: Peripheral Runoff
20 SOMATOM Sensation 16: Differential Diagnosis of a Pancreas
22 SOMATOM Sensation Open: Paget Sarcoma Disease in the Tibia
24 SOMATOM Emotion: High Resolution Orthopedics Examination
26 SOMATOM Spirit: Pre-operative Neurosurgical Planning
SCIENCE28 z-Ultra-High Resolution Mode
30 Combining Forces to Improve Patient Care
33 High-tech Meets History
CUSTOMER CARE35 A Win-Win Situation
36 Cross-country Postprocessing Events
36 CT Imaging and Cherry Blossoms
37 Exploring the Riches of Multislice CT
37 Service: Frequently Asked Questions
38 Service: CT Online
38 Information and Services Available Directly at Your CT Scanner
38 Service: Upcoming Events and Courses
39 Imprint
COVER STORY
4 SOMATOM Sessions 16
Siemens Computed Tomography is setting new trends in clinical workflow.
Think Clinical!
By Louise A. McKenna, PhD, Global Product and Marketing Manager CT-Workplaces, and Stefan Wünsch, PhD,
Global Product and Marketing Manger Clinical Solutions, Siemens AG, Medical Solutions, CT Division
Think clinical! One of the hottest topics in medical imaging
today is how to deliver a fast, confident diagnosis in an
increasingly demanding clinical environment. Both physi-
cians and patients have high clinical expectations, exam vol-
umes are on the increase, scan times are faster than ever,
datasets are large, plus there is demand for improved patient
safety in terms of dose, without compromising result. Deliv-
ering excellent clinical outcomes in medical imaging today is
no longer only about having thinnest slices, the most pow-
erful tube and fastest rotation time. It is about having the
most innovative Computed Tomography (CT) scanner in
combination with well designed clinical workflow solutions.
“From the clinicians’ viewpoint, achieving a fast, confident
diagnosis relies on two key factors: the right CT technology
in combination with the right clinical workflow,” says Elliot K.
Fishman, MD, Professor of Radiology and Oncology at Johns
Hopkins Medical Center, Baltimore, USA. “In my opinion,
Siemens is setting the trend in modern diagnostic imaging,
combining the most innovative scanner technologies with
intelligent workflow tools and new intuitive clinical software
applications. Siemens is leading the way in seamlessly inte-
grated CT solutions that help us to be fast in reaching the
right clinical outcomes reliably and efficiently, everyday.”
Leadership in Workflow SolutionsThe innovation explosion in Multislice CT technology and the
introduction of 64-slice CT has revolutionized medical imag-
ing, paving the way for a wealth of new and exciting clinical
applications: fast cardiac CT in under eight seconds, whole
body vascular CT with exquisite detail in under 20 seconds,
highly sensitive virtual imaging of the colon and perfusion
CT, to name but a few. And true to it’s tradition as an innova-
Siemens offers a solution that sets benchmarks for dose
management: CARE Dose4DTM provides a fully automated
dose modulation workflow designed to deliver the lowest
possible dose with the best possible image quality. The auto-
mated protocol facilitates a fast workflow, because it is not
necessary to adapt protocols manually for each new patient.
For optimal cardiac studies, Siemens ECG-pulsing modulates
dose so that maximum dose is given during expected
diastole and only 20 percent dose during all other phases.
For contrast media management, CARE Bolus CT and a new,
COVER STORY
SOMATOM Sessions 16 5
tion leader, Siemens is setting new trends in clinically orien-
tated diagnostic imaging. The unique portfolio of syngo®
based workflow tools and software applications are intuitive
and intelligent, designed to get clinicians to the right diag-
nosis as quickly and as efficiently as possible. The goal?
Enhanced clinical outcomes for improved patient care.
Improved Efficiency with CARE SolutionsScanning with speed and efficiency is prerequisite for
improving throughput and enjoying all the clinical benefits
of ultra-fast scan times. This can only be optimally achieved
via more task automation within the scanning workflow.
Dose and contrast management are key areas where
automation can save precious time, improve reliability and
enhance clinical outcomes, especially for interventional pro-
cedures. Automated real-time dose modulation and contrast
media management offer two key benefits: they allow
radiologists to offer more patient-friendly exams with no
compromise in diagnostic image quality. Reliably improving
efficiency through task-automation was one of the main
drivers behind the development of Siemens unique portfolio
of CARE solutions.
Excellent image quality is only one step towards a confident physician’s diagnosis. Well designed clinical workflow solutions have become equally important.
»CARE Dose4D helps us to reduce
complexity… The software provides
us with a fully automated, real-time
anatomy based dose regulation,
resulting in a simplified workflow
without the need for individualized
protocol optimization.«Professor Werner Bautz, MD,
University of Erlangen, Germany.
6 SOMATOM Sessions 16
COVER STORY
Siemens exclusive CARE Contrast CT are the right answer to
the increasing demand for fast, contrast enhanced CT scan-
ning. State-of-the-art, 64-slice CT scanners such as the
SOMATOM Sensation 64, image the entire chest, abdomen,
and pelvis in less than ten seconds. These fast scan times
raise unique challenges to the contrast media injector
devices and the use of intravenous contrast media. Today’s
Multislice CT scanners are so fast that if the injection param-
eters are not adjusted, the scan will be completed before the
entire volume of contrast is injected. These shorter scan
times create an opportunity to reduce the total amount of
intravenous contrast administered, decreasing costs and
improving patient care.
Siemens’ unique CARE Bolus CT software enables the
improvement of planning procedures and diagnosis due to
an optimized spiral scan start after contrast injection. As
soon as a predefined contrast enhancement threshold is
reached, the diagnostic scan is triggered and begins after a
short, preset delay. In terms of workflow, CARE Bolus
negates the need for a test bolus, facilitates contrast phase
shaping, and the fully automated triggering protocol maxi-
mizes efficiency also for emergency exams. With the newest
member of the CARE family, Siemens offers an industry first
– CARE Contrast CT. CARE Contrast CT couples the CT with
the injector. The fully automated workflow is initiated by a
single click, which is especially useful for trauma and acute
care patients.
Data Management par Excellence – the WorkStream4D WayData management plays a pivotal role in workflow efficiency.
The typical number of images for a CT exam has risen from
around 300 five years ago to well over 2000 with the
SOMATOM Sensation 64. Such large data sets can only be
managed electronically. In addition, the paradigm shift from
2D to volumetric 3D reading is driving medical imaging
departments to adopt an efficient, filmless workflow where
fast reconstruction and 3D volume rendering are essential
for achieving an efficient diagnostic workflow. Siemens has
been a pioneer of this paradigm shift and is the industry
leader in innovative data management solutions.
Managed the traditional way, multiple reconstruction and
re-formatting steps not only reduce workflow efficiency,
they also compromise image quality with a knock-on effect
on diagnostic confidence. Siemens' innovative Work-
Stream4DTM is specifically designed to efficiently manage
large data sets with fully automated reconstruction and re-
formatting of raw data – assuring the best possible image
quality, which is good news for diagnostic confidence. With
direct 3D reconstruction, all diagnostic information is cap-
tured in 3D slices, which economizes on data storage in dai-
ly workflow, as data volume can be reduced by up to a factor
of ten. WorkStream4D also offers pre-programmed, multi-
phase 4D reconstruction protocols, enhancing the advanced
clinical spectrum for dynamic evaluation in cardiac CT, for
example. This deliberate optimization of the 2D, 3D and 4D
workflow is designed to ensure that users can realize the full
clinical benefit of Multislice CT. WorkStream4D is also
designed to make workflow as flexible as possible, uniquely
CARE Dose4D
500 mA
30 mA
Reduced doselevel based ontopogram
Scan withconstant mA
Real-timeangular dosemodulation
X-raydose
Slice position
CARE Dose4D
Instead of just taking into account the patient’sexternal dimensions and apparent size, CAREDose4D analyzes the cross-sectional anatomy inreal-time and adjusts the emitted X-ray doseaccordingly – providing excellent image qualitywith minimized exposure.
SOMATOM Sessions 16 7
COVER STORY
WorkStream4D
Scan
WorkStream4D
ReadTime
Reconstruct & Reformat
Conventional Workflow
ReadTimeScan
WorkStream4D virtually eliminates the need for time-consuming manualreconstruction steps – the software does this automatically.
enabling fully automated reconstruction in parallel to acquisi-
tion at both Navigator and Wizard CT-workplaces, offering
users a high degree of workflow synergy.
Leadership in Clinical ApplicationsSiemens is also setting new standards in clinical CT through
on-going innovation in integrated clinical software applica-
tions. The latest enhancements focus on improving speed
and efficiency through simplifying workflow, increasing
automation and integrating clinically orientated tasks into
single software solutions. The current portfolio of syngo
software offers the industry’s most comprehensive range of
clinical solutions for cardiovascular CT, preventive care,
oncology, neurology and routine imaging.
The introduction of the SOMATOM Sensation 16 in 2001,
closely followed by the SOMATOM Sensation 64, revolution-
ized cardiac and vascular CT. For the first time, CT was able to
deliver the exceptional spatial and temporal resolution cou-
pled with the exquisite image quality needed for non-inva-
sive cardiac and vascular imaging. With a focus on automa-
tion, speed and simplicity, syngo Circulation* is the newest
addition to the portfolio of advanced cardiac workflow tools
designed to help clinicians realize the full diagnostic poten-
tial of cardiac CT imaging. Designed in close collaboration
with Radiologists and Cardiologists, syngo Circulation pro-
vides the entire toolset for a comprehensive cardiac CT exam
based on a one-time loaded data-set. This includes an intelli-
gently designed 1-click workflow for robust coronary vessel
segmentation, automated stenosis quantification and opti-
mized stent planning, automated quantification of ejection
fraction, end-diastolic and systolic volume plus stroke vol-
ume, and 4D evaluation of up to 24 phases.
Enhancing clinical workflow for vascular CT has been the
focus in the further development of syngo InSpace4DTM.
Concentrating on clinician’s requirements for more automat-
ed tools, particularly for removal of bony structures for faster
vascular analysis, a fully automated advanced bone removal
application is an integrated feature of the latest syngo
InSpace4D. In combination with syngo Vessel View, users
can really optimize diagnostic workflow for a broad range of
vascular pathologies.
For preventive care and oncology, syngo LungCARE CT and
syngo Colonography are part of the new generation of intel-
ligent clinical software solutions. They incorporate a number
automated features such as measuring tools, synchroniza-
tion for easy evaluation of follow-up studies or prone/supine
reads and pre-filled reports, all designed to reduce the man-
ual workflow of the clinicians so that they can focus on diag-
nosis. In combination with Siemens’ CT technology, a lung or
colon exam, from scan to report, can be completed in less
than 20 minutes – the clinician input representing about ten
minutes for diagnosis and reporting.
8 SOMATOM Sessions 16
COVER STORY
Computed Tomography (CT) fulfils many
clinical needs – be it in neurology, oncol-
ogy, angiography, in the emergency
room or, increasingly, also in cardiology
and preventive care. Siemens Medical
Solutions offers specialized solutions for
the specific needs of each of the respec-
tive clinical departments. “Supplying our
customers with hardware dedicated to
their needs is not enough”, says Bernd
Montag, PhD, President of Siemens
Medical Solutions’ CT division. “We also
want to give applications and workflow
tools to them that are explicitly de-
signed to meet the needs of their specific
clinical department – from patient regis-
tration to reporting.”
syngo Circulation* is the first of Siemens’
new generation clinical software solu-
tions. syngo Circulation is a dedicated
solution for cardiac evaluation, uniquely
designed to offer fast, robust morpho-
logical and functional analysis in one in-
tuitive software application.
”An accurate but fast diagnosis is crucial
in cardiovascular imaging in order to
ensure the best quality of care for the
patient. This is why the workflow must
be extremely fast and well organized,“
states Lars Hofmann, MD, Global Prod-
uct and Marketing Manager for Cardiac
CT at Siemens.
syngo Circulation was developed in
close collaboration with leading cardiac
experts. It features a unique user-friendly
workflow that guides the clinician
through cardiac evaluation from auto-
mated heart segmentation, through
coronary vessel segmentation and
stenosis quantification, fully automated
functional analysis and reporting, in
under 10 minutes.
A typical workflow begins with fast load-
ing of up to 24 phases, at highest image
resolution. With a single click, the heart
can be isolated from the rib cage facili-
tating rapid assessment of the overall
cardiac anatomy. Fully automated seg-
syngo Circulation offers physicians the industry’s most comprehensive software solution for cardiac CT, setting a new benchmark for improving clinical outcomes through innovative software solutions.
D E D I C AT E D S O LU T I O N S
The Fast Lane to Cardiac Diagnosis
mentation and stenosis quantification
tools provide for fast, confident evalua-
tion of the coronary vessels and opti-
mized stent planning. syngo Circulation
also offers tools for full functional analysis
including cine display for evaluation of
wall motion defects, automated left
ventricle segmentation and quantifica-
tion of ejection fraction, stroke volume,
end systolic and diastolic volumes. All
qualitative and quantitative results are
integrated in a single, customizable re-
port.
”The new software helps to facilitate
and increase workflow for physicians
with a busy clinical practice by incorpo-
rating intuitive reporting functionality
and integrating many time-saving, ac-
curate and guided procedures for the
rapid examination of cardiac CT stud-
ies”, says Michael Poon, MD, Director of
Cardiology at the Cabrini Mecial Center
and Associate Professor at the Mount
Sinai School of Medicine, New York, USA.
*syngo Circulation is pending 510(k) review and is not yet commercially available in the U.S.
SOMATOM Sessions 16 9
COVER STORY
Siemens users are also in a unique position to benefit from
state-of-the-art computer-assisted reading tools for lung
nodules and colon lesions. syngo LungCARE CT with NEV
(Nodule Enhanced Viewing) and syngo Colonography with
PEV (Polyp Enhanced Viewing) represent an on-going com-
mitment to development of automated tools that improve
diagnostic confidence through the use of computer-assisted
second readers, which may have real impact on treatment
decisions. Centers that have already been working exten-
sively with syngo LungCARE NEV have realized a significant
improvement in daily workflow. Klinikum Rechts der Isar in
… in chest CT examinations“In my opinion, reliable detection of early stages of lung can-
cer is a difficult but crucial task. There is no question that
reading screening or diagnostic CT studies is susceptible to
detection errors due to the huge amount of imaging data
that has to be reviewed. In a recently published study, we
demonstrated that the use of ‘second reader’ technology
considerably increases the radiologist’s sensitivity for detec-
tion of pulmonary nodules.
Therefore, to ensure the highest
possible sensitivity for detection
of early-stage lung cancer in the
screening process, I am strongly
in favor of double-checking the
images with a Computer-Aided
Detection (CAD) system. Prelimi-
nary results suggest that applica-
tion of CAD might even be time-
efficient. Finally, CAD is not only
valuable in lung cancer screen-
ing, but also improves detection
of lung metastases when staging
or re-staging oncology patients.“
… in CT colonography“Computer-Aided Detection (CAD) has been very successful
in mammography and is being used for early detection of
lung cancer. In my opinion, if CAD could accurately detect
colon polyps in CT colonography (CTC), with a relatively low
false positive rate, it might become another very important
clinical application. Currently, most of the radiologists who
are experienced in CTC would not want to interpret more
than 3–5 studies per day.
Reading CTC is a demanding,
meticulous process, requiring
focused and extremely atten-
tive concentration. Given the
fact that there are not
enough radiologists to inter-
pret the growing number of
CT scans performed in the
United States, any assistance
in interpreting CTC will be
embraced enthusiastically by
radiologists.“
Dag Wormanns, MD,Department of Diagnos-tic Radiology, University Clinic Muenster, Muenster, Germany
Mark Baker, MD, Section of Abdominal Imaging, Division of Radiology, TheCleveland Clinic Founda-tion, Cleveland, Ohio, USA
S E C O N D R E A D E R TO O L S
Benefits of Computer-Aided Detection
Munich, Germany has been able to reduce the number of
reading physicians since introducing syngo LungCARE NEV:
“With this tool, we reduced the need for the second read by
a second physician screening all our chest datasets for lung
nodules, and therefore improved our diagnostic work-up
and follow-up findings,” says Christoph Engelke, MD,
Department of Diagnostic Imaging, Technical University
Munich, Germany.
The innovation continues in software solutions for neurology,
particularly for stroke and tumor perfusion. syngo Neuro
Perfusion CT is an established tool for the fast assessment of
»Siemens’ syngo Neuro Perfusion CT provides a cutting-edge imaging technology that
allows us to speed up patient diagnosis. The method allows us to differentiate definitively
damaged brain tissue from penumbra in less than two minutes. «Bernd Tomandl, MD, Assoc. Professor, Department of Interventional Radiology, Klinikum Süd, Nuremberg, Germany.
10 SOMATOM Sessions 16
COVER STORY
syngo C T 2 0 0 6 A / G
Continuous Software Enhancements
In addition to new software developments, Siemens
Medical Solutions continuously enhances existing
clinical applications for Computed Tomography (CT).
The latest developments provide various new fea-
tures, such as improved workflow solutions, excellent
image quality in the brain due to superior image opti-
mization algorithms, as well as enhanced access to
online information and services directly from the
scanner console. This allows a faster download of
scan protocols and – depending on the system con-
figuration – facilitates innovative new clinical applica-
tions such as
• syngo InSpace4D with integrated bone removal
package for enhanced visualization of vascular
structures
• syngo Body Perfusion CT for quantitative evaluation
of dynamic CT data of organs and tumors, following
the injection of a compact bolus
• CARE Contrast CT for a simplified contrast workflow,
due to synchronized scanning and contrast media
application.
Newly shipped SOMATOM CT systems are pre-in-
stalled with the latest complimentary versions – and
with the latest optional versions, if ordered. To
increase clinical performance for already installed
SOMATOM CT scanners, complimentary versions are
included in the syngo Evolve contract as part of a
Siemens Service Contract. The optional software
applications can be ordered as upgrade packages, if
desired. More information about the syngo Evolve
Packages can be obtained online. For questions
regarding the individual Evolve status of a CT scanner,
the local Siemens representative should be contacted. Further Information: www.siemens.com/ct-evolvek
syngo InSpace4D with advanced bone removal facilitatesfast segmentation and removal of bony structures for fastervisualization of vessels.
stroke, with a complete exam requiring less than 15 minutes
[1], which is critical for stroke patients. syngo Neuro Perfu-
sion CT is also designed to be versatile and is ideal for the
analysis of brain tumor perfusion for brain tumor angio-
genesis or assessing treatment efficacy in oncology.
Currently, Siemens offers around 30 workflow and clinical
applications, providing solutions to meet a comprehensive
range of clinical needs from cardiac CT to oncology. With a
keen eye on the future, Siemens will continue to set new
trends for the next generation of clinical CT solutions…
[1] Tomandl B., et al. Comprehensive imaging of ischemic stroke
with multislice CT. Radiographics 2003; 23: 565-592
SOMATOM Sessions 16 11
NEWS
S O M ATO M E m o t io n 16
Advanced Performance at Low Cost
V I S I O N O F T H E F U T U R E
CT on its Way Beyond Slices?
With the new SOMATOM Emotion 16,
Siemens Medical Solutions again proves
its cost-consciousness and clinical ex-
pertise. The SOMATOM Emotion 16 de-
livers the performance required for ad-
vanced clinical applications at low
life-cycle costs. It is based on the suc-
cessful SOMATOM Emotion product line
with more than 3,500 installations
A future vision of CT, as shown at RSNA 2004by Siemens’ Computed Tomography Division– a system combining several X-ray sourcesand detector domains
worldwide. The new system enables
hospitals and private practices with lim-
ited budgets and/or space allocations to
install a 16-slice CT.
Being air cooled, the SOMATOM Emotion
16 and all its components require only
18.5 square meter installation space. In
addition to the economical purchase
price, this minimal space requirement
and the overall low life cycle costs also
contribute to it’s cost efficiency.
From a clinical perspective, the new
scanner offers every advantage of a
modern 16-slice system: short breath
hold times alowing image acquisition
without movement artifacts, high diag-
nostic image quality due to a collimation
of down to 16 x 0.6 millimeters, a mini-
mum gantry rotation time of down to
0.5 seconds, and a comprehensive set
of routine and advanced clinical applica-
tions.
The number of slices acquired per rota-
tion has doubled every 18 months in the
last few years, and still the innovators at
Siemens’ Computed Tomography (CT)
Division continue to challenge the fu-
ture limits of CT technology and applica-
tions. “To just continue the current slice
race will not be the right path to open up
new clinical possibilities”, says Bernd
Ohnesorge, PhD, Vice President Market-
ing and Sales. “It’s time to explore totally
new CT concepts, and to move beyond
the simple adding of more detector
rows."
Last year’s RSNA visitors saw a visionary
CT concept at the Siemens booth’s Inno-
vation Pavilion that may redefine clinical
CT in the future: a very slim gantry de-
sign with a wide gantry opening allow-
ing for easy patient access and higher
patient comfort. A large area detector
with over 15 centimeter z-coverage per
rotation enabling dynamic and volum-
etric imaging of entire organs and body
regions, such as the heart, liver and
brain. Several X-ray sources generate
separate X-ray fan beams, while raw
data is acquired by an arrangement of
different detectors. A slim tube design
similar to Siemens' STRATON® is a key
prerequisite for such a concept. Sources
and detector segments are combined
differently in order to optimally adapt to
the needs of each respective clinical ap-
plication. Thus, this visionary concept
offers numerous advantages for various
clinical applications:
1. Examination of entire organs in one
rotation, e.g. for brain, organ and tu-
mor perfusion and for dynamic CTA
examinations of the heart and other
organs is made possible by utilizing
the above mentioned area detector.
2.Simultaneously operating several
source-detector subsystems may be a
way to a temporal resolution below
100 milliseconds, eventually even
below 50 milliseconds, independent
of heart rate, with today’s rotation
time of 0.33 seconds. Robust cardiac
imaging at high and irregular heart
rate may become feasible, without b-blockers and without drawbacks of
multi-segment reconstruction algo-
rithms – by using data from only one
heart beat.
3. In the same way, more X-ray power is
available for high quality imaging of
obese patients at maximum volume
coverage speed. More power is ap-
plied within shorter scan times, so
that radiation exposure is not neces-
sarily increased. High diagnostic quali-
ty can be achieved in obese patients
where most X-ray energy is absorbed
in the surrounding fat tissue.
4.Totally new opportunities can be ex-
plored with multiple source-detector
subsystems operated with different
X-ray energy levels, thus enabling
spectral CT imaging. This may allow
for raw-data based “built-in” separa-
tion of bone, vessel lumen and calcifi-
cations, or for characterization of liq-
uids, such as blood and pus, in
emergency diagnostics.
The SOMATOM Emotion 16 unitesmodern 16-slice technology withthe cost-efficiency of the SOMATOMEmotion product line.
With the SOMATOM Sensation 40, SiemensMedical Solutions rounds out its extensivehigh-end product portfolio in CT.
12 SOMATOM Sessions 16
NEWS
LE R N E R C O LLE G E O F M E D I C I N E
LEONARDO in Anatomy Teaching
S O M ATO M S e n s at io n P R O D U C T L I N E
40-Slice Technology
Students in the anatomy classes at
Cleveland Clinic Lerner College of Medi-
cine at Case Western Reserve University,
Cleveland, OH., are enjoying very spe-
cial insights into the human body. Each
week starts with a session at the Col-
lege’s LEONARDO Workstation. Faculty
members demonstrate – with syngo
InSpace and other applications – and ex-
Two new Siemens Computed Tomogra-
phy (CT) systems were recently intro-
duced to the market. The world’s first
SOMATOM Sensation 40 scanner was
installed at the radiology department of
Alamance Regional Medical Center,
Burlington, NC., replacing the clinic’s
SOMATOM Sensation 10. And Mayo Clinic
in Rochester, MN., was one of the first
clinics to install a SOMATOM Sensation
Open with 40-slice technology. The sys-
tem features an extra-large, 82 cen-
timeter gantry bore and field of view.
A new, optional high-capacity patient
table, developed as part of the CT Clini-
cal Innovation Center partnership be-
tween Mayo and Siemens, was installed
with the system to permit advanced CT
imaging of extremely heavy patients.
The table allows the scanning of pa-
tients weighing up to 615 lbs, compared
to 440 lbs for conventional patient ta-
bles. “With these features, the
SOMATOM Sensation Open is ideally
suited for very heavy patients and our
Bariatric Surgery Program,” says Cynthia
plain multiple views of the body regions
they will cover during the coming week.
Students then return several times dur-
ing the week to review images as they
proceed on their weekly learning mat-
ter. New cases to demonstrate specific
examples of anatomy are added onto
the LEONARDO regularly. “The use of
this technology has directly enhanced
the students’ understanding of anatomy
and their ability to visualize structures,”
says Richard Drake, PhD, Director of
Anatomy. He is also involved in prepar-
ing images on the LEONARDO for a pub-
lishing project of Gray’s Anatomy family
of educational material.
McCollough, PhD, Associate Professor of
Radiological Physics at the Mayo Clinic
College of Medicine. “In addition, the
STRATON tube provides the X-ray output
needed for high-quality images in very
large patients. These are exactly the
clinical and technical attributes we were
seeking, especially for bariatric care and
image guided interventions.”
Both new systems feature Siemens rev-
olutionary z-Sharp Technology, which
utilizes an electron beam that is accu-
rately and rapidly deflected, creating
two alternating and overlapping X-ray
projections reaching each detector ele-
ment. This doubles the scan information
without a corresponding increase in
dose, and routinely enables acquisition
of 40 slices per rotation with unprece-
dented image quality and the industry’s
highest image resolution of below 0.4
millimeter. z-Sharp Technology firmly
established a new benchmark for diag-
nostic excellence, as proven with almost
300 installations of z-Sharp powered
systems worldwide.
The large bore of the SOMATOM SensationOpen is ideal for examinations of bariatricand cancer patients.
Further Information:
www.clevelandclinic.org/cclcm
k
SOMATOM Sessions 16 13
BUSINESS
S O C I ET Y O F C A R D I OVAS C U L A R C T
Cardiologists and Radiologists Unite ForcesBy Lars Hofmann, MD, Global Product and Marketing Manager Cardiac CT,
Siemens AG, Medical Solutions, CT Division, Forchheim, Germany
s y n g o LU N G C A R E C T W I T H N E V
Free Trial Clinical Software
On March 7, 2005, the Society of Cardio-
vascular Computed Tomography (SCVCT)
and the Society of Cardiac Computed
Tomography (SCCT) merged to form a
new society called “Society of Cardio-
vascular CT” (SCCT). Both former soci-
eties were relatively new, having just
been formed in January 2005. They
soon realized that they shared common
goals and that a single, strong society
would be more effective.
The SCCT is represented by a 15-member
Board of Directors and five executive of-
ficers. Four of them and the vast majori-
ty of the Board of Directors are long
term Siemens Computed Tomography
(CT) users. Executive officers of the SC-
CT are: Stephan Achenbach, MD, Presi-
dent, Erlangen, Germany; Michael
Siemens Computed Tomography (CT)
now offers their latest computer assist-
ed detection software syngo LungCARE
CT with NEV (Nodule Enhanced View-
ing), on a free, 90-day trial basis. This
software is designed to enhance physi-
cians’ diagnostic confidence as a second
reader tool, confirming the presence or
absence of lung lesions. Double reading
with a second reader software offers a
significantly increased sensitivity com-
pared to conventional double reading.
Thus, computer assisted detection is a
valuable tool for the detection of pul-
monary nodules, and should be used as
second opinion.1
Poon, MD, President-Elect, New York,
NY; Daniel Berman, MD, Vice President,
Los Angeles, CA; Gilbert Raff, MD, Secre-
tary, Royal Oak, MI, and Joao Lima, MD,
Treasurer, Baltimore, MD.
“Computed Tomography has gone
through rapid technical development in
the past years, and is increasingly appli-
cable to imaging of the heart, coronary
arteries and vascular system. It is impor-
tant that researchers and clinicians in
this field work together to create a body
of evidence strong enough to support
recommendations as to which patients
are most likely to benefit from the new
diagnostic modalities and to assure that
CT imaging performed by appropriately
trained physicians will be available to
these patients. I am confident that the
newly formed Society of Cardiovascular
CT will be very helpful in establishing
the appropriate clinical role for cardio-
vascular CT,” said Dr. Achenbach, SCCT
President.
The SCCT is an international organization
committed to the further development
of cardiovascular CT through standards
setting, advocacy, education, training, ac-
creditation, quality control and research.
Its members are physicians, scientists,
technologists, and others who work in
the field of cardiovascular CT. Siemens
CT division strongly supports the new
society and encourages users of cardiac
CT to join the society to support this fas-
cinating technology.
Trial licences are available
• via LifeNet: Customers with SRS con-
nectivity can order their trial software
directly from their scanner. The soft-
ware will then be automatically in-
stalled and ready for use.
• via the local Siemens Representative:
Customers can contact their local
Siemens Representative. He/she will
discuss the available trial options with
them and schedule an appointment
for the installation of the trial soft-
ware. 1 Wormanns D, Beyer F, Diederich S, et al. Diag-
nostic performance of a commercially available
CAD system for automatic detection of pulmonary
nodules: Comparison with single and double read-
ing. Röfo 2004 Jul; 176(7): 953-958
Further Information:
www.siemens.com/SOMATOMExpand
k
syngo LungCARE CT with NEV identifiespotential lung lesion that were overlookedduring the radiologist’s first read.
Further Information: www.scct.orgk
BUSINESS
14 SOMATOM Sessions 16
C T C O LO N O G R A P HY
Demo Poster
I N V E ST I N G I N P E O P LE
Driving Initiatives against Colon CancerSiemens Medical Solutions, Daimler
Chrysler AG, Henkel KGaA, BASF AG and
E.ON Ruhrgas AG, in cooperation with
their respective occupational health
centers, have all initiated screening pro-
grams for colon cancer. Siemens Med-
ical Solutions in Germany invited em-
ployees aged 45 plus, together with
those at risk (e.g. familial history) to un-
dergo a Fecal Occult Blood Test (FOBT)
as a primary screening tool. Employees
with a positive test were offered two al-
ternatives for further investigation: a
traditional colonoscopy or – true to the
tradition of innovating health care – the
opportunity to undergo a CT-Colonog-
raphy (CTC) on the University of Erlan-
gen’s SOMATOM Sensation 64. The
hugely successful take-up of this initia-
tive reflects the increased awareness of
the benefits of early detection: 1,110 em-
ployees signed up; of the 2.5 percent
with a positive FOBT test, 60 percent
chose to follow-up with a CTC. The suc-
cess of the project had much to do with
the close collaboration with Siemens
Betriebskrankenkasse (SBK), and also
with the department of radiology at the
University of Erlangen.
“This screening initiative represents a
huge opportunity for us to gather more
evidence for the use of virtual colonog-
raphy as a highly sensitive and specific
screening tool for colon cancer,” explains
Rolf Janka, MD, Department of Radio-
logy, University of Erlangen, Germany.
“A virtual colonoscopy using CT is non-
invasive, patient friendly, and relatively
low cost. These are key pre-requisites
for screening procedures. The more clin-
ical data we can gather, the greater our
chance of getting approval for CTC for
colon cancer screening. In my opinion,
that can only lead to one thing: better
patient care!”
The use of CT for early detection of
colon cancer is a hotly debated topic.
Several publications have demonstrat-
ed that with Multislice CT, radiologists
can achieve a sensitivity and specificity
to match conventional colonoscopy.
Currently, experts across the globe are
working hard on providing further data
supporting the reliability of CTC for de-
tection of clinically relevant polyps. One
of the largest clinical trials will take place
in the US, where the American College
Imaging Network and the National Can-
cer Institute aim to accrue over 2,000
patients over the next 2.5 years.
CT Colonography (CTC) is emerging as
an attractive alternative to colonoscopy
for the detection and evaluation of le-
sions of the colon in terms of excellent
diagnostic outcomes, high patient ac-
ceptance and lower cost. It is ideally suit-
ed for patients who are unable or unfit
to undergo conventional colonoscopy,
as well as for asymptomatic and screen-
ing patients. Around 600 Siemens Mul-
tislice CT users are currently utilizing
syngo Colonography for efficient evalu-
ation of the colon.
Thomas Mang, MD, and co-workers
from the Medical University of Vienna,
Austria, have performed around 280
CTC exams on their SOMATOM Sensa-
tion 16 Scanner over the last two years.
Based on their experience with virtual
colonoscopy, they have designed a
poster demonstrating the spectrum of
CTC findings in colon diseases. All dis-
eases are briefly described and exten-
sively demonstrated on 3D and 2D CT
images, guiding and assisting users in
the reporting of findings in CTC exami-
nations.
The poster has been produced together
with Siemens Medical Solutions, Aus-
tria, and is available free of charge in ei-
ther German or English.
To obtain a free CT Colonography Poster,
please send an e-mail with your postal
address to
subject “CTC Poster”.Each disease is briefly described anddemonstrated, based on CT images.
SOMATOM Sessions 16 15
BUSINESS
Fudan University – Zhongshan Hospi-
tal, Shanghai City, China, and Werner-
Wicker-Klinik, Bad Wildungen, Ger-
many, were among the first to install a
SOMATOM Spirit. SOMATOM Sessions
asked Professor Zeng MengShu, MD,
and Carsten Figge, MD, about their
experience with the new system.
What types of examinations are youusing the SOMATOM Spirit for?Dr. Figge: We use the SOMATOM Spirit
for all exams in daily clinical routine.
With our outpatients, there are more
head, thoracic, and abdominal exams,
while our inpatients mainly need ex-
aminations of the spine. We examine
between 15 and 20 patients per day.
Prof. MengShu: We do routine head
and thoracic examinations, high reso-
lution lung scans, abdominal contrast
examinations, spine examinations,
and other routine examinations. On
average, we scan 60 patients per day
with the SOMATOM Spirit.
You have been working with theSOMATOM Spirit for over sixmonths. What is your experience,compared to other CT scanners?Dr. Figge: Compared to our former
SOMATOM AR.Star, the SOMATOM
Spirit – as a dual-slice system – broad-
ens our spectrum of examinations, to
CT-Angiographies of the head, or mul-
tiphase exams of the abdomen, at
thinner collimation.
What is your opinion about the userguidance and simplicity of the userinterface?Prof. MengShu: Our technologists
are very satisfied with the user inter-
face; it is easy to understand and to
operate. Qualified technicians can do
simple examinations after only five
minutes of training.
Dr. Figge: The SOMATOM Spirit is very
easy to operate because of its syngo
user interface. Many workflow steps
can be automated, which reduces the
workload for our technologists and
shortens examination times. Sec-
ondary postprocessing like Multi-Pla-
nar Reformatting, Maximum Intensity
Projection, or Volume Rendering
Technique (VRT) are readily available
for diagnosis. The ease of use surpris-
es and pleases at the same time.
Where do you use VRT?Dr. Figge: I use VRT for the visualiza-
tion of complex diagnosis in meetings
and demonstrations. This way, I can
give surgeons an overview of complex
anatomy; details can then be worked
out in the primary slice images.
Prof. MengShu: We use VRT for many
kinds of examination, such as tracheal
and bronchia examinations. Especially
with CT-Angiography, we can see the
abdominal artery after removing the
bone and other organs. The value of
VRT is well acknowledged, the doc-
tors can see the area of interest directly
in the 3D structure.
What is your overall impression ofthe SOMATOM Spirit?Dr. Figge: And it runs, and runs, and
runs ...
To which customers would you rec-ommend the SOMATOM Spirit?Dr. Figge: I would recommend it to
any customer who needs an easy to
use system for their daily clinical rou-
tine, and, at the same time, wants
high cost efficiency. Particularly small,
outlying clinics utilizing teleradiology
can profit from the excellent handling
concept.
Prof. MengShu: The SOMATOM Spirit
is the ideal system for hospitals with
less than 500 beds that buy their first
CT, and for large hospitals that buy an
additional CT for routine examinations.
S O M ATO M S p ir i t
“And it runs, and runs, and runs...“
Interview
Werner-Wicker-Klinik specializes in
acute care for spinal marrow injuries,
congenital and acquired spine dis-
eases (German Center for Scoliosis),
neuro-urology, and neuro-surgery.
Its Radiological Institute collaborates
closely with the Radiology Institute
Bad Zwesten, Practice of Drs. Mariß/
Aref/Figge. Together, they attend not
only to the outpatients of all hospitals
of the Wicker-Group, but also serve as
a teleradiology center for 14 acute-care
hospitals. As a polyclinic, ZhongshanHospital focuses on the diagnosis
and treatment of liver, kidney and lung
cancer. The clinic has 1,272 beds, 1.2
million outpatients and 25 thousand
inpatients per year. There are 2,300
employees working in the hospital, in-
cluding 360 professors and associate
professors, plus three CAS (Chinese
Academy of Science) and CAE (Chi-
nese Academy of Engineering) acade-
micians.
Carsten Figge, MD: “We experienceup to 30 percent dose reduction,thanks to the SOMATOM Spirit’sCARE Dose functionality.”
16 SOMATOM Sessions 16
SOMATOMSensation
SOMATOMEmotion
SOMATOMSpirit
CLINICAL OUTCOMES
DIAGNOSIS
CT revealed atypical coarctation, associated with very large
patent ductus arteriosus, supplying descending aorta with
blood.
On the first acquisition [Fig. 1 and 2], only patent ductus arte-
riosus, descending aorta and left subclavian artery were opaci-
fied, due to the right to left shunt between ductus arteriosus
and descending aorta. The aortic arch was not visualized.
A second acquisition was performed with a longer start delay
to accommodate this unusual anatomical configuration. The
aortic arch was opacified, and MIP images clearly showed
Case 1:Low Dose Cardiac Scanning of a Neonate in one SecondBy Jean-François Paul, MD, Anne Sigal-Cinqualbre MD, Department of Radiology, and V. Lambert, MD,
Department of Cardiopediatry, Marie Lannelongue Hospital, Le Plessis-Robinson, France
HISTORY
An 1 day old infant was referred for cardiac CT for differential
diagnosis prior to surgical intervention for severe aortic
coarctation from total interruption of aortic arch.
Previous foetal echocardiography had revealed asymmetry
of ventricles associated with an enlarged right ventricle, and
there was suspicion of coarctation of the aortic arch. At birth,
echocardiography was not able to assess whether the baby
was suffering from severe aortic coarctation or if the aortic
arch was totally interrupted.
SCANNING PROCEDURE
Due to the high rotation speed (0.33s) of the SOMATOM Sen-
sation 64 gantry, the entire thorax could be captured in only
1 second and hence it was not necessary to sedate the infant.
Five cc of contrast medium were injected at a flow rate of
0.6 cc/s in a small cubital vein. After the analysis of the first
acquisition data set, an additional acquisition was necessary
to visualize the aortic arch. Indeed, the aortic arch was not
visualized at first-pass because most of the contrast flow was
going from the pulmonary artery directly to the descending
aorta (via patent ductus arteriosus), bypassing the aortic
arch. A second acquisition 10 seconds later was necessary to
get the aortic arch opacified [Fig. 3].
CARE Dose4D was applied, enabling us to perform the exam
with an exposure that was as low as reasonably achievable,
in this case at 80 kV and 20 mAs. Total DLP for 2 acquisitions
was 15, and the estimated exposure for the exam was very
low at 0.6 mSv.
Images were reconstructed at 1 mm using MIP and VRT recon-
structions for a complete description of anatomical disor-
ders.
[ 1 ] Left lateral view usingVRT display. First acquisitionshowed very large patentductus arteriosus in connec-tion with descending aorta.Left subclavian artery is origi-nating from the junction of the two vessels. Aortic arch is not opacified. PDA: patent ductus arteriosus; DA: descending aorta; LSCA: left subclavian artery; LPA: left pulmonary artery
[ 2 ] Same acquisition in a more posterior view
SOMATOM Sessions 16 17
[ 4 ] VRT display of the aortic arch,in a left lateral view. Note that theaortic narrowing is hidden by thepatent ductus arteriosus.PDA: patentductus arteriosus; DA: descendingaorta; LSCA: left subclavian artery;IA: innominate artery; LCA: left carotidartery; LPA: left pulmonary artery
EXAMINATION PROTOCOL
Scanner SOMATOM Sensation Cardiac 64
Scan area thorax
Scan length 64 mm
Scan time 1 s
Scan direction caudo-cranial
Heart rate 140
ACV no ECG gating
kV 80 kV
Effective mAs 20 mAs
Rotation time 0.33 s
Slice collimation 0.6 mm
Slice width 1 mm
Table feed 46 mm / s
Reconstruction increment 0.7 mm
CTDI 0.49 mGy
Kernel B30
Contrast
Volume 5 ml
Flow rate 0.6 ml / s
Start delay 10 s (central venous access)
Postprocessing MIP, VRT
[ 3 ] Second acquisition (10 sec-onds after first pass): MIP viewshowed opacified aortic arch withsevere coarctation (arrow). AA:Aortic arch; DA: descending aorta
[ 5 ] VRT display in a posteriorview shows the complex anatomyassociated with the aortic coarcta-tion. PDA: patent ductus arterio-sus; DA: descending aorta; LSCA:left subclavian artery; LCA: leftcarotid artery; AA: aortic arch
CLINICAL OUTCOMES
that the aorta was severely narrowed, but not totally inter-
rupted [Fig. 3]. Additional VRT images depicted this complex
configuration [Fig. 4 and 5].
Surgical intervention by lateral thoracotomy was successful.
The baby was discharged from our institution at day 10, with-
out complication.
COMMENTS
This is an exemplary case for the application of 64-slice CT
scanning for congenital heart disease patients, especially in
newborns. Very short acquisition times, associated with thin
collimation, provide very high quality images in non-inter-
ventional procedures, associated with low radiation expo-
sure. These data may be crucial in such critical conditions. In
case of interrupted arch, the surgical approach would have
required sternototomy with bypass circulation instead of lat-
eral thoracotomy. In case of doubt at echocardiography, a
conventional aortography may be indicated, but angiogra-
phy is a very risky examination, especially in neonates. Multi-
slice CT is the ideal alternative to avoid such an invasive
imaging technique. Here, CT was preferred to MR due to
superior spatial resolution, speed of acquisition (and thus
absence of respiratory artefacts), and no need for sedation.
Radiation dose delivered by CT was below 1 mSv.
SOMATOMSensation
SOMATOMEmotion
SOMATOMSpirit
CLINICAL OUTCOMES
18 SOMATOM Sessions 16
HISTORY
A 56 year old male patient was presented with pain in the
muscle of the left leg after slight exercise. A CTA runoff with
the latest 40-slice CT technology was scheduled to rule out
claudication.
DIAGNOSIS
CTA revealed an occlusion of the left common iliac artery just
distal to its origin. Occlusion of the proximal two thirds of the
left external iliac artery is present. Collateral reconstitution of
the distal left external iliac artery/common femoral artery is not-
ed. Distal vessels are not affected due to collateral blood supply.
COMMENT
The case demonstrates the clinical impact of CT for non-inva-
sive assessment of vascular structures with the SOMATOM
Sensation 40. Due to the excellent speed and an isotropic
resolution below 0.4 mm, even finest structures can be
resolved without venous overlap.
Case 2:Peripheral RunoffGeoffrey Browne, MD, Chris DeAngelo RT ( R ), ( CT ), Alamance Regional Medical Center, Burlington, USA
[ 1 ] VRT showing occlusion of the left iliac artery afterbone removal performed with syngo InSpace4D
EXAMINATION PROTOCOL
Scanner SOMATOM Sensation 40
Scan area Lower extremity runoff
Scan length upper leg: 545.5 mm; feet: 238 mm
Scan time upper leg: 19 s; feet: 8 s
Scan direction craniocaudal
kV 120 kV
Effective mAs 170 mAs (CARE Dose4D)
Rotation time 0.37 s
Slice collimation 0.6 mm
Slice width 0.75 mm
Pitch 1
Reconstruction increment 0.5 mm
Contrast 370 Isovue
Volume 100 ml
Flow rate 3 ml / s
Start delay Care Bolus CT triggered at 100 HU
with the reference ROI on the aorta
Postprocessing syngo InSpace4D with bone removal
[ 2 ] MIP image showing occluded femoral arteryfrom the origin, filling by collateral circulation fromthe peripheral part
SOMATOM Sessions 16 19
CLINICAL OUTCOMES
[ 3 ] Curved MPR shows calcified and non-calcifiedplaques as well as the thrombus responsible for theocclusion.
[ 4 ] VRT of the collateral vessels
A B
[ 5A and 5B ] VRT images show the normal bloodsupply through the collaterals of the tibial vesselsand supply of the feet.
SOMATOMSensation
SOMATOMEmotion
SOMATOMSpirit
CLINICAL OUTCOMES
20 SOMATOM Sessions 16
Case 3:Differential Diagnosis of a PancreasBy Xue Hua Dan, MD, and Jin Zheng Yu, MD, Department of Radiology,
Peking Union Medical College Hospital, Beijing, China
HISTORY
The patient was a 65 year old man, who had suffered from
hypoglycemia for 5 years, aggravated by vertigo and spells
of unconsciousness during the past 2 years. Due to the
severe symptoms, an insulinoma, a tumor of the pancreas,
was suspected. A previous enhanced CT scan (one month
earlier) indicated no abnormalities. The surgeon asked for an
additional CT scan that revealed a pancreatic tumor.
DIAGNOSIS UND COMMENTS
Only a decade ago, the sensitivity of finding insulinomas with
CT was rather low. Today, using high resolution MSCT in the
early arterial phase, we can quite easily detect these small
pancreatic lesions. Arterial spiral CT showed a small, but
strongly enhancing lesion of 1.3 cm at the tail of the
pancreas. Tumor feeding arteries originating from the
splenic artery were also delineated using MIP and MPR.
Additional dynamic scanning confirmed the diagnosis of
insulinoma. With syngo Body Perfusion CT, it was possible to
further characterize the lesion. It showed the typical behavior
of a benign tumor with significantly increased flow and
blood volume, but normal permeability. The patient was
referred for tumor resection. Pathological findings confirmed
the CT results.
The syngo Body Perfusion CT option* allows for the quanti-
tative evaluation of dynamic CT data of organs and tumors,
following the injection of a compact bolus. By providing
images of blood flow, blood volume and permeability from
one set of dynamic CT data, syngo Body Perfusion CT permits
the assessment of irregular perfusion and of perfusion
changes during therapy. Using specific evaluation protocols
for different organs and motion correction for improved
accurate anatomical object alignment, it can be particularly
helpful for differential diagnosis and monitoring of tumors.
NEW: syngo Body Perfusion CTFunctional Diagnosis of Organs and Tumors
Scanner SOMATOM Sensation 16
Non-contrast Arterial phase Dynamic scanphase
Scan area From From Pancreasdiaphragm horizontal levelto iliac crest part of
duodenumto diaphragm
Scan length 25 cm 11.52 cm 2.4 cm
Scan time 11.77 s 3.22 s 35 s
Scan direction cranial-caudal caudal-cranial –
kV 120 kV 120 kV 80 kV
Effective mAs 160 mAs 160 mAs 140 mAs
Rotation time 0.5 s 0.5 s 1.0 s
Slice 0.75 mm 1.5 mm 1.5 mmcollimation
Slice width 1.0 mm 2.0 mm 3.0 mm
Table feed / 12.0 mm 24.0 mm 0 mmrotation
Reconstruction 0.7 mm 1.0 mm –increment
Kernel B10f B20f H30f
Contrast – omnipaque omnipaque(350 mg (350 mgiodine / ml) iodine / ml)+saline +saline
Volume – 70 ml + 20 ml 50 ml + 20 ml
Flow rate – 5 ml / s 5 ml / s
Start delay/Bolus tracking – 5 s 5 s
Postprocessing – MPR/MIP/VRT syngo Body
Perfusion CT
EXAMINATION PROTOCOL
*syngo Body Perfusion CT is available for SOMATOM Emotion Duo, 6, and 16,
and SOMATOM Sensation scanners with syngo CT 2006 A/G.
CLINICAL OUTCOMES
SOMATOM Sessions 16 21
[ 1A and 1B ]MPR and MIPimages show thesmall endocrinetumor as a highlyenhanced nodule(arrow), located at the tail of thepancreas, with thenutritional arteryvisible.
[ 2 ] Functional parameter maps calculated in two adjacent 3 mm slices (upper and lower row) using syngo Body Perfusion CT. The maps show increased blood flow (left, red color) and blood volume (middle, red color), butnormal permeability (right, green color). Note the excellent spatial delineation of this small tumor made possibleby robust modeling of data from thin slices and acquired in only 35 s (one breath hold).
A B
SOMATOMSensation
SOMATOMEmotion
SOMATOMSpirit
CLINICAL OUTCOMES
HISTORY
An 80 year old female with monostotic Paget’s disease of the
right tibia presents with progressive pain and soft tissue
swelling of the right leg. A biopsy was taken that confirmed the
exact pathologic diagnosis of the lesion arising from Paget’s
disease and a sarcomatous transformation to osteosarcoma.
DIAGNOSIS
Paget’s disease of the bone is a common disorder affecting
approximately 3–4% of the population over 40 years old.
The pathologic abnormality in Paget’s disease is excessive
and abnormal remodeling of the bone. Three phases have
classically been described as discrete and distinctive,
although in reality they represent a continuum: the lytic
phase (incipient-active), in which osteoclasts predominate;
the mixed phase (active), in which osteoblasts begin to
22 SOMATOM Sessions 16
Case 4:Paget Sarcoma Disease in the Tibia By J. Dinkel, MD, U. Mende, MD, PhD, Department of Radiation Oncology, and J. Debus, MD, PhD, Director,
Department of Radiation Oncology, University of Heidelberg, Germany
appear superimposed on osteoclastic activity and eventually
predominate; and finally, the blastic phase (late-inactive), in
which osteoblastic activity gradually declines.
Monostotic disease (10–35% of cases) is more often seen in
the axial view of the skeleton, although any site can be the
sole region of involvement. Polyostotic disease (65–90 %) is
more frequent than monostotic disease. The patient presented
here had monostotic disease localized in the right tibia only.
VRT and MPR images of the tibia show the radiological char-
acteristic manifestations of Paget’s disease: a diffuse cortical
and trabecular thickening involving the entire bone.
The combination of progressive osteoclastic and osteoblastic
activity leads to the dichotomy of osseous enlargement but
weakening of the bone. Sequelae of this osseous weakening
are the most common complication of Paget’s disease. An
anterior bowing of the tibia is seen in the VRT reconstruction.
1A 1B
[ 1A and 1B ] Osteoblastic tumor mass (arrow) extending into the soft tissue with infiltration of the skin and skin metastases
CLINICAL OUTCOMES
SOMATOM Sessions 16 23
EXAMINATION PROTOCOL
Scanner SOMATOM Sensation Open, 40 slices
Scan area extremity
Scan length 451 mm
Scan time 41.5 s
Scan direction cranio-caudal
kV 120 kV
Effective mAs 66 mAs (CARE Dose4D) 90 mAs ref.
Rotation time 1 s
Slice collimation 0.6 mm
Slice width 0.6 mm
Pitch 0.9
Reconstruction increment 0.4 mm
CTDI 7.24 mGy
Kernel B20 / B60
Postprocessing syngo InSpace
[ 2 ] Arterioscle-rosis of posterior tibial artery (thinarrow); diffuse cortical and tra-becular thicken-ing involving theentire bone withanterior bowing(thick arrow)
[ 3 ] Nodularmineralizationsof metastaticlymph nodes(arrow)
[ 4 ] Disorga-nized areas are seen in thedistal cortex of the distal tibia
Disorganized areas are seen in the cortex of the distal tibia.
The fractured fibula was not affected by Paget’s disease.
Since the patient refused the recommended surgical treat-
ment, radiation therapy was performed.
COMMENTS
Neoplastic complications of Paget’s disease are relatively
rare. Sarcomatous degeneration is estimated to occur in 1%
of patients with longstanding disease. In case of severe
polyostotic disease, the relative risk of sarcomatous transfor-
mation is up to 5–10%.
A Paget sarcoma can have different appearances depending
on the matrix produced (osteolytic, osteoblastic, mixed). In
this case, the CT scan shows the osteoblastic tumor mass
extending into the soft tissue with infiltration of the skin and
skin metastases. Moreover, the CT scan of the popliteal
region reveals nodular mineralizations of metastatic lymph
nodes.
The high isotropic resolution provided by the SOMATOM
Sensation Open with 40 x 0.6 mm slices produced during
each rotation, allows for the detection of small changes after
the radiation therapy. Spiral artifacts e.g. aliasing artifacts
that manifest as streaks emerging from high contrast
objects, and windmill artifacts, are almost completely elimi-
nated with z-Sharp Technology, even at higher pitch values.
In addition, z-Sharp Technology reduces image noise when
the reconstructed slice width is the same thickness as the
collimation.
SOMATOMSensation
SOMATOMEmotion
SOMATOMSpirit
CLINICAL OUTCOMES
24 SOMATOM Sessions 16
Case 5:High Resolution Orthopedics ExaminationLy Thai Bach, MD, Chief of Radiology Unite, & Eric Devilaine, Chief of X-ray Technician Team,
Centre Hospitalier Robert Morlevat, Semur en Auxois, France
heel bone, but also at the level of the anterior-inferior part of
the talus and at the level of the anterior part of the extremi-
ty distal of the tibia.
Furthermore, calcifications, probably of cartilagenous origin,
were also visible on both sides of the talus in the frontal view,
confirming the evidence of a chondrocalcinosis (deposition
of multiple small calcified islands of bone within the synovi-
um of the joint). Also, edema of the soft tissue around the
ankle at the subcutaneous level could be observed.
COMMENTS
Especially for examinations of bone joints and the inner ear,
we primarily use the high resolution mode in order to detect
smallest details, such as micro calcification. This feature
allows us to provide an improved differential diagnosis com-
pared to normal scan modes.
HISTORY
A 75 year old woman was referred for a detailed evaluation
of her left ankle because of degenerative arthropathy, which
also entails mechanical pain. She benefited from a local infil-
tration of anaesthetics some time ago, with good results.
Prior standard x-rays confirmed a subastragalar arthropathy
of the talus (astragalus) and probably also astragalo-scaphoid
and tibio-tarsal. A high resolution CT scan was requested in
order to examine the different injuries of the region.
DIAGNOSIS
Using the high resolution mode of our SOMATOM Emotion 6
with a collimation of 6 x 0.5 millimeter, we were able to view
the degenerative processes in the tibio-astragalus region
with posterior constriction. We identified the presence of
several subchondral geodes-like formations (sphere shaped
structure which contains a hollow cavity), some 17 mm
diameter, mainly visible at the level of the anterior part of the
The SOMATOMEmotion scanners -from the single-slice SOMATOMEmotion to thenew, 16-sliceSOMATOM Emo-tion 16 – reliablyperform routineand advancedapplications.
CLINICAL OUTCOMES
SOMATOM Sessions 16 25
[ 1 ] The axial view shows irregular, roughly spherical,bodies (arrowhead) in the anterior part of the heel boneas well as the presence of micro calcifications (arrow).
[ 2 ] Sagital view of degenerative processes of thetibio-astralagus part of the talus (arrows) with posteriorconstriction
[ 3 ] The coronal view shows the presence of microcalcifications, probably of cartilagenous origin (arrow-head), and edema of the soft tissue (arrow).
[ 4 ] VRT of the tibia shows the geodes-like structures ofthe anterior part of extremity distal of the tibia (arrow).
EXAMINATION PROTOCOL
Scanner SOMATOM Emotion 6, high resolution mode
Scan area extremity
Scan length 80 mm
Scan time 32 s
Scan direction craniocaudal
kV 130 kV
Effective mAs 90 mAs (CARE Dose4D)
Rotation time 1.0 s
Slice collimation 6 x 0.5 mm
Slice width 0.6 mm
Table feed / rotation 2.5 mm
Reconstruction increment 0.3 mm
Kernel U90s
SOMATOMSensation
SOMATOMEmotion
SOMATOMSpirit
CLINICAL OUTCOMES
26 SOMATOM Sessions 16
Case 6:Pre-operative Neurosurgical Planning By Carsten Figge, MD, Radiology Institute/Practice Drs. Mariß/Aref/Figge, Bad Zwesten, Germany
HISTORY
A 36 year old female with a suspected tumor was admitted
for neurosurgical evaluation after increasingly frequent
headaches during the last months, anosmia and emotional
labililty. The patient refused to undergo MR scanning due to
high grade claustrophobia. Pre-operative CT scanning was
requested by the neurosurgeons to provide more informa-
tion of possible tumor proliferation, infiltration into the
sinuses and dislocations of vessels.
DIAGNOSIS UND COMMENTS
The CT scan showed an inhomogeneous frontobasal
enhancing mass, a suspected meningioma of the olfactory
groove due to related symptoms with heterogeneous rim-
like enhancement. A peritumoral edema with compression
of the ventricles was also noted. CTA revealed a dislocation
of the arteriae cerebri anteriores and identified the feeding
arteries of the tumor. Additionally, a hyperosteosis in the
lamina cribrossa can be seen. Tumor growth in the sinuses
can be excluded.
In this specific case, having a patient with claustrophobia, the
combination of CTA, MIP and MPR reconstructions allowed
for successful surgical planning. This case demonstrates the
beneficial value of CT scanning as an alternative to MR scan-
ning in the preparation for surgical interventions.
The SOMATOM Spirit is a sub-
second, dual-slice CT scanner
for day-to-day clinical routine.
It is ideally suited for outlying
satellite clinics utilizing tele-
radiology as well as medical
fields other than radiology,
such as ENT, dental surgeons,
and general practitioners. By
adding CT to their medical serv-
ices, virtually any practice or
facility can improve the quality
of patient care and increase
patient volume.
New Multisclice CT – SOMATOM Spirit
The attractive design of the SOMATOM Spirit helps alleviate patients’ inhibitions.
SOMATOM Sessions 16 27
EXAMINATION PROTOCOL
Scanner SOMATOM Spirit
Scan area cerebrum
Scan length 110 mm
Scan time 25 s
Scan direction caudo-cranial
kV 130 kV
Effective mAs 50 mAs
Rotation time 0.8 s
Slice collimation 2 x 1 mm
Slice width 1.25 mm
Contrast Non ionic contrast media
Volume 120 ml
Flow rate 3 ml / s
Start delay 25 s
Postprocessing MIP, MPR, VRT
CLINICAL OUTCOMES
[ 1A ] Axial image showing a subfrontal extra-axialenhancing mass, with compression of the frontal lobes
[ 2 ] CTA of tumor feeding vessels
[ 3 ] Sagital MPR of the tumor [ 4 ] VRT of the menigeoma
Pitch 1.8
Reconstruction increment 0.6 mm
Kernel H21
SOMATOM Sensation 64z-Ultra-High Resolution ModeBy Thomas Flohr, PhD, Head of Physics and Application Development, and Karl Stierstorfer, PhD,
Physics and Application Development, Siemens AG, Medical Solutions, CT Division
A special ultra-high resolution mode, called z-UHR, providing
considerably enhanced spatial resolution, will be introduced
for new SOMATOM Sensation 64 scanners, starting in sum-
mer 2005: up to 0.24 millimeter isotropic resolution can
then be achieved in clinical routine. With z-UHR, the
SOMATOM Sensation 64 has reached a level of resolution
previously known only from non-clinical research CT sys-
tems using CsI-aSi flat-panel detectors. “The combination of
the revolutionary z-Sharp Technology and the unique z-UHR
functionality offers our users, in daily clinical routine, an
isotropic detail in the range of MicroCT technology,” says
Alexander Zimmermann, Global Product and Marketing
Manager SOMATOM Sensation.
The new mode is intended for ultra-high resolution bone-
imaging, in particular for wrists, joints, and inner ear studies.
Pre-requisite for z-UHR ultra-high resolution mode is the
unique z-Sharp Technology enabled by the Siemens propri-
etary STRATON X-ray tube. A moveable tantalum comb (grid)
is positioned in front of the detector elements, covering the
outer detector rows and effectively reducing the z-aperture
of the inner six detector rows from 0.6 millimeter to 0.35
millimeter at iso-center [Fig. 1]. Without z-Sharp Technology,
collimated 0.35 millimeter slices would be acquired with this
set-up – but unfortunately with a sampling distance of 0.6
millimeter and a corresponding “dead zone” of 0.25 millime-
ter, so that the slices would not be adjacent in the z-direction
and volume coverage would be incomplete. However,
z-Sharp Technology provides measurement data in these
dead zones as well. Using z-Sharp Technology, rays of subse-
quent readings are shifted by 0.3 millimeter at iso-center in
the longitudinal (z-) direction. Two subsequent six-slice read-
ings are interleaved and result in one twelve-slice projection
with 0.3 millimeter z-sampling distance and 0.35 millimeter
detector z-aperture – without gaps in the longitudinal direc-
tion. The data acquired with z-UHR correspond to those
obtained with a conventional detector with 0.3 millimeter
detector elements. The grid covers six adjacent 0.6 millime-
ter central detector elements, and thus provides the data of
12 x 0.3 millimeter collimated slices with z-UHR. Well defined
slices with 0.4 millimeter slice-width are reconstructed in a
spiral mode. Both in the scan plane and along the z-axis, an
isotropic resolution of 0.24 millimeter (240 micron) is
achieved. This can be demonstrated using the CATPHAN
(The Phantom Laboratories, Salem, NY). Turning the high
resolution insert by 90°, the bar patterns become roughly
oriented along the z-direction. Fig. 2 shows an MPR of this
phantom in the longitudinal direction, proving that 21 lp/cm,
corresponding to 0.24 millimeter object size, can be
resolved. Early clinical experience demonstrates that both
inner ear and wrist studies show significantly improved z-axis
resolution with increased clarity of sub-millimeter anatomic
structures [Fig. 3].
28 SOMATOM Sessions 16
SCIENCE
Detector set-up
X-ray focus
Grid
0.35 mm
Scanfield z-axis
[ 1 ] Schematic illustration of the detector set-upused for z-UHR. A moveable tantalum grid is positioned in front of the detector elements,reducing their z-aperture to 0.35 millimeter atiso-center. z-Sharp technology is used to acquirereadings with a z-shift of 0.3 millimeter at iso-center. Two subsequent readings are interleavedand result in projection data with 0.3 millimeterz-sampling distance and 0.35 millimeter detectorz-aperture.
SOMATOM Sessions 16 29
SCIENCE
3
[ 2 ] MPR of the high resolution insert ofthe CATPHAN, demonstrating 0.24 milli-meter isotropic resolution with z-UHRavailable for the SOMATOM Sensation 64.
[ 3 ] MPR of a wrist fracture acquired with 0.24 millimeter isotropic resolution.The image demonstrates a level of resolu-tion previously known only from researchCT systems with flat-panel detectors. (Image courtesy of Klinikum Großhadern, Munich,
Germany).
2
0.24
0.25
0.26
0.27
z-axis (mm)
SCIENCE
30 SOMATOM Sessions 16
The 2004 introduction of Symbia with TruePoint SPECT·CT
technology definitely created new momentum in medical
imaging. A breakthrough in healthcare and medical imaging,
it provides a new tool to improve workflow efficiency and
accelerate patient diagnoses. Building on the foundation of
Siemens’ history of innovation and technology, Symbia is the
perfect merger of two equal modalities, single photon emis-
sion computed tomography (SPECT) and computed tomog-
raphy (CT), into one hybrid imager that will make a differ-
ence in the way medical imaging is delivered. SPECT imaging
is predominantly used to reveal a patient’s functional or vital
processes, such as blood circulation and the metabolism and
vitality of organs and tumors. The addition of CT to this imag-
ing technique provides the anatomical map for pinpointing
the exact location of disease in the body, in order match
metabolic or “functional” information.
A New ConceptSymbia’s imaging modalities, SPECT, SPECT·CT and Multislice
CT, can be used independently or together. Used in combi-
nation, TruePoint SPECT·CT provides contemporaneously
acquired, coregistered SPECT and diagnostic CT images, an
advance with immediate benefits for oncology and cardiology,
experts say.
“Experience from PET/CT tells us that there is an advantage
to having a diagnostic CT along with the nuclear medicine
study to aid in tumor localization and surgical planning,” says
Homer Macapinlac, MD, Deputy Chairman, Department of
Nuclear Medicine, M. D. Anderson Cancer Center, who is
planning for the installation of 5 Symbia TruePoint SPECT·CT
imagers in 2005. “M. D. Anderson Cancer Center’s mission is to
eliminate cancer, and our goal specifically in the Division of
Diagnostic Imaging is to provide the best imaging possible to
empower our physicians to help cancer patients,” Macapinlac
said, “Because the anatomical detail is essential to have in
combination with the functional information, TruePoint
Symbia TruePoint SPECT·CTCombining Forces to Improve Patient Care
Single Photon Emission Computed Tomography (SPECT) and ComputedTomography (CT) come together to revolutionize medical imaging
By Claudette Yasell, Nuclear Medicine Division,
Siemens Medical Solutions, Hoffmann Estates, IL, USA
SPECT·CT is going to help us in the diagnostic interpretation
of clinical exams. Ultimately, the person who benefits from
this new technology will be the patient.”
Experts believe that Symbia will also have a profound effect
on cardiac imaging. “I’m pretty excited,” says Edward Ficaro,
Ph.D., an assistant research scientist in the Department of
Radiology at the University of Michigan Health System, the
very first clinical installation of Symbia. Ficaro has spent
more than a decade working to improve the accuracy of
SPECT imaging, from acquisition through physician review.
He works closely with cardiac specialists and expects that
with Symbia, they will be able to register SPECT and CT
images of the heart with increased precision and accuracy.
“Registering these images isn’t being done routinely because
it's so difficult,‘ says Ficaro. The problem is that the thorax
isn't a rigid structure. So registration is not just a fixed point
rigid transformation, it’s often an actual morphing of the
body based upon known landmarks.“ With TruePoint
SPECT·CT technology, Symbia enables the examination of
function and perfusion of the right ventricle of the heart,
that, at just 1 to 4 mm thickness, is usually obscured in tradi-
tional SPECT studies.
Thinking AheadInnovations in technology have been the backbone of
Siemens' success. Innovations such as TruePoint SPECT·CT
were facilitated through an integrated team of engineers
and scientists from nuclear medicine and CT working togeth-
er to create new possibilities in the care of cardiac and cancer
patients.
After the incredible growth of PET/CT, customers and engi-
neers alike began to imagine the possibilities of SPECT and CT
together. Extensive customer surveys led to an initial con-
cept involving basic CT capabilities added to the powerful
SPECT capabilities of the e.cam Signature Series. The success
of PET/CT systems involving high-end CT technology and the
SOMATOM Sessions 16 31
SCIENCE
explosive growth in Multislice CT studies, however, ultimate-
ly led the company to design the current line-up of Symbia
scanners, the T, T2 and T6 systems, involving single-, dual-,
or six-slice CT technology drawn directly from Siemens CT
Division.
Designing a Hybrid SuccessHaving already designed the best in SPECT, the design team
gave Symbia everything the e.cam has to offer, including HD
detectors, and unparalleled image quality and speed in
nuclear imaging. The team decided early-on to avoid the
“washer-dryer” approach of simply coupling two existing sys-
tems with a common patient bed, in favor of a more tightly
integrated design, using as many existing components as
possible.
The goal was to achieve a 200-cm scan range through both
systems’ fields of view without requiring an impractically
long patient motion range. An excessively long patient
motion range would have made it difficult to site the system
in standard nuclear medicine and radiology rooms.
Minimizing the patient motion range meant minimizing the
distance between the CT and SPECT fields of view. One pos-
sible solution, of course, would have been to mount the CT
and SPECT components on the same rotation gantry so that
they shared a field of view. However, the team rejected this
design because the weight of the SPECT heads would have
severely limited the gantry rotation speed and thus the
imaging speed achievable by the CT components. If state-of-
the-art Multislice CT components were to be used, the sys-
tem needed to be capable of the sub-second gantry rotation
speeds expected in modern Siemens' CT scanners. So the
team opted for maintaining distinct but closely spaced sub-
systems.
Fusing the two technologies was not simply a matter of
shoehorning the components of two existing systems into a
slightly larger housing. The system is highly integrated,
mechanically and electronically. While striving to make use
of existing components wherever possible, the team often
had to reconfigure and redesign components from each
technology in the interest of meeting their compactness
goals. The SPECT drive system was pushed to the outside,
which allowed the CT components to be brought closer to
the SPECT heads. The CT gantry was essentially redesigned,
allowing the components to be as close as possible. With the
SPECT and CT components tightly integrated, the resulting
system offers many possible modes of operation.
Meeting the Integration ChallengeThe push for tight integration extended to the software as
well. The team aimed at keeping the individual user inter-
faces the same as those employed in the component sys-
tems. The software operation of the Symbia TruePoint
SPECT·CT system is based on Siemens' exclusive syngo com-
mon medical imaging software platform that provides multi-
modality connectivity using the DICOM standard.
At the heart of the software lies the Flash 3D SPECT image
reconstruction software, based on an iterative maximum-
likelihood algorithm that allows for modeling and correction
of data degradations such as attenuation, collimator blur-
ring, and scatter. Obviously, the CT images can be used to
estimate the attenuation experienced by the SPECT photons,
but not directly. CT X-ray sources produce photons with a
broad range of energies, typically centered around 70 keV,
while SPECT radionuclides most commonly emit photons of
140 keV. To convert a CT image into a SPECT attenuation
map, it is necessary first to determine the effective average
energy of the photons contributing to the CT image, and
then to apply appropriate conversion factors to each pixel.
The conversion has to be accurate for all isotopes and SPECT
acquisition parameters. Moreover, the great difference in
resolution between CT and SPECT images must be bridged in
order for the CT images to be registered with SPECT for
attenuation correction.
Securing Clinical SuccessTo date, the intuitive interfaces of Symbia have been success-
ful in creating workflow efficiencies since the very first
national and international clinical installations were com-
pleted. The very first user, University of Michigan Health Sys-
tem, in Ann Arbor, MI, completed installation prior to the
2004 RSNA and the very first clinical images from Symbia
with TruePoint SPECT·CT were presented there. “The Symbia
SPECT and CT imaging come together in Symbia TruePoint SPECT·CT technology.
32 SOMATOM Sessions 16
SCIENCE
with TruePoint SPECT·CT technology will allow us to take
nuclear cardiac imaging to the next level. We expect that
within the next year, we’ll be doing 80 to 90 percent of our
cardiac studies on these systems,” said James Corbett, MD,
professor of Radiology and Internal Medicine, Director of
Cardiovascular Nuclear Medicine, UMMC. “As we integrate
this new system into our clinical practice, we expect diag-
nostic accuracy to be improved significantly, as the amount
of information gathered will be considerably increased. This
should make the Nuclear Medicine SPECT images more accu-
rate, and the information from the spatially registered CT
scan will provide additional correlative data. We expect this
will prove to be important for patient care and significantly
enhance the diagnostic and prognostic value to the com-
bined imaging procedure, compared to conventional SPECT
imaging alone.”The University of Erlangen in Germany was
recently the first European recipient of Symbia. Professor
Torsten Kuwert, MD, Chairman of the Department of Nuclear
Medicine is confident that the addition of this hybrid imager
will ultimately achieve the same success as PET/CT. “By com-
bining SPECT and CT, it is possible to combine high biochem-
ical resolution with high anatomical resolution to really local-
ize neoplastic lesions, which should be expected to add to
the quality of diagnosis. Hybrid PET/CT systems have already
proven the diagnostic benefit, and most believe it’s not too
much of a stretch to expect the same from SPECT·CT.”
Siemens expects the Symbia hybrid imaging system to
appeal to a number of different medical specialists, including
radiologists, cardiologists and, of course, nuclear medicine
specialists. Fittingly for a system born of cooperation and
integration, it may actually realize its full potential when
used in concert across departmental lines, with interpreta-
tion of the diagnostic-quality CT scans and SPECT data ulti-
mately improving patient care.
HISTORYAn 82 year old male, 77 kg (169.2 lbs), with known coronary
artery disease, poorly controlled hypertension, insomnia and
other problems, came in for a routine follow-up after experi-
encing minor bouts of chest pain. His resting EKG was abnor-
mal. During exercise, he experienced greater than 1 to 2 mm
ST depression, but did not experience chest pain at that time.
DIAGNOSISA TruePoint SPECT·CT study was performed with the Symbia
hybrid imager using standard SPECT protocol in combination
with a 6-slice CT scan. The SPECT portion of the examination
revealed an apical and anterior defect that is mostly
reversible and an inferior and inferior-septal defect that is
significantly reversible. The scan also detected post-stress
LV dilatation.
Case StudyMyocardial PerfusionUsing TruePoint SPECT·CT
Images show an apical andanterior defect that’s mostlyreversible and an inferior and inferior-septal defect that is significantly reversible. CT attenuated corrected (AC) images show greaterreversibility of inferior defectthan uncorrected images.Also noted is post-stress LVdilatation.
By James Corbett, MD, Professor of Radiology and
Internal Medicine, Director of Cardiovascular Nuclear
Medicine, University of Michigan, Ann Arbor, MI, USA
SOMATOM Sessions 16 33
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ArchaeologyHigh-tech Meets History
Siemens Computed Tomography (CT) scanners help unravel the past: In January 2005, the ancient Egyptian mummy Tutankhamen was examinedby an Egyptian team utilizing a SOMATOM Emotion 6 to explore how old he was at death, if he had suffered from any diseases, what he died of, and todetermine the condition of the mummy itself. The following results wereannounced in Cairo in March 2005.
Was King Tutankhamen killed? Zahi Hawass, PhD, Secretary
General of Egypt’s Supreme Council of Antiquities, stated
that there is no evidence that the young king was actually
murdered. This murder theory is based upon an X-ray exam-
ination of the pharaoh’s head in 1968 which revealed a
cloudy area at the back of the skull. The project’s scientists
have now agreed that there is no evidence of murder. There
is nothing that indicates a blow to the rear of the skull. There
are two bone fragments loose in the skull, but these cannot
possibly have been from an injury causing death – they
would have become stuck in the embalming resin. The sci-
entists have matched these pieces to the fractured cervical
vertebra and foramen magnum, and believe these were bro-
ken either during the embalming process or in 1925 by the
mummy’s discoverers, who were trying to get access to the
gold artifacts wrapped with the mummy.
Careful MummificationBased on the identification of at least five different types of
resin and the many episodes of its introduction to the body
and cranial cavity, the scientists concluded that great care
was taken in the mummification of the pharaoh. This coun-
ters previous arguments that the body was prepared hur-
riedly and carelessly, perhaps to cover up a crime. However,
the remains of Tutankhamen are in very poor shape, primarily
due to the damage done by the Howard Carter team that dis-
covered the tomb in 1922. The body is in several pieces.
Bones and skin are broken in numerous places. The king’s
arms, originally folded across his chest, are now by his sides.
Many parts are missing, although fragments remain loose in
the sand tray where the mummy is resting.
The scientists noted a fracture of the left lower femur, at the
level of the epiphyseal plate. This fracture appears different
from the breaks caused by Carter’s team: it has ragged
[ 1 ] One of Tutankhamen’s wisdom teeth is still impacted.
[ 2 ] The king had a small cleft in his hard palate.
[ 3 ] Whole body of pharaohTutankhamen
Clinical images courtesy of Supreme Council of Antiquities
edges, and there are two layers of resin inside. Some scien-
tists believe that the resin indicates that this can only have
occurred during Tutankhamen’s life or the embalming pro-
cess. They note that this type of fracture, unlike many others,
is possible in young men. There is no obvious evidence of
healing, but such indications may be masked by the resin.
Since the associated skin wound would still have been open,
this fracture would have had to occur shortly before death.
Carter’s team had noted that the patella on his left leg was
1
2
3
SCIENCE
34 SOMATOM Sessions 16
loose, possibly suggesting further damage to his body. Now
the patella is completely separated, and has been wrapped
with the left hand. Scientists also noted a fracture of the
right patella and right lower leg. Based on this evidence, they
suggested the king may have suffered an accident in which
he broke his leg, leaving an open wound. Although the break
itself would not have been life-threatening, infection could
have set in. However, it is also possible, although less likely,
that this fracture was caused by the embalmers. Other sci-
entists maintain that the fracture can only have been inflict-
ed by Carter’s team during extraction of the body from the
coffin. They argue that if such a fracture had been suffered in
life, there would have been evidence of hemorrhage or
hematoma in the CT scan. They believe the resin was pushed
into the fracture by Carter’s team.
The examination confirmed that Tutankhamen had died at
about the age of 19. The fusion of the epiphyseal plates
matches the development of a young man of 18 or more,
and 20 or less. The wisdom teeth are not completely grown.
One of them [Fig. 1] is impacted, and there is a slight thin-
ning of the sinus cavity above. The king had a small cleft in
his hard palate [Fig. 2], not associated with an external
expression such as a hare-lip. His lower teeth were slightly
misaligned. He had large front incisors and the overbite char-
acteristic of other kings from his family. Tutankhamen had a
dolichocephalic skull. As the cranial sutures are not prema-
turely fused, this is most likely a normal anthropological vari-
ation rather than any pathology. There is a slight bend in his
spine; the scientists agreed that this is not scoliosis, since
there is no rotation and no associated deformation of the
vertebrae. The bend thus most likely reflects the way the
mummy was positioned by the embalmers.
The sternum and a large percentage of the front ribs of the
mummy are missing. Their ends appear to have been cleanly
cut by a sharp instrument. The scientists agree that this can-
not mirror extensive trauma to the chest, as such trauma
would have left marks elsewhere in the body. Opinion is
divided as to whether the ribs and sternum had been
removed by the embalmers or by Carter’s team. Archaeological
investigation will continue in an attempt to resolve this issue.
Tutankhamen was approximately 170 centimeters tall [Fig. 4],
as extrapolated from the measurement of the tibia. Judging
from his bones, which indicate a slight build, he had been
well-fed and healthy, and had not suffered major childhood
malnutrition or infectious diseases. His internal organs, as is
usual for Egyptian mummies, are not present in the body,
and thus could not be analyzed.
The Egyptian scientific team, headed by Dr. Hawass, consisted
of radiologists, pathologists, and anatomists from the Faculty
of Medicine at Cairo University. The team later invited three
foreign consultants to work with them.
The examination was part of a research project being con-
ducted by Egypt’s Supreme Council of Antiquities. The project
also includes meticulous CT scans of a large number of other
Egyptian mummies. To support the project, Siemens Medical
Solutions and the National Geographic Society have provided
a SOMATOM Emotion 6 installed in a trailer – making it trans-
portable to wherever it is needed. With this device, the fragile
remains of Egypt’s ancient people can be studied with a min-
imum of movement and disturbance with the ultimate view
of prolonging preservation.
Further Information:
www.ngs.org; www.guardians.net/hawass/
k
The Great Art Detective
Using CT for ancient relics is not only restricted to
human remains. At RSNA 2004, a group of Belgian
scientists led by Marc Ghysels, MD, illustrated the
spectrum of CT findings in wooden, ivory, pottery and
stone sculptures. Using a SOMATOM Volume Zoom,
these experts are able to disclose manufacturing tech-
niques, natural damage, repairs, restoration and
fakes. When a collector is interested in an art work,
one of his primary concerns is to establish its authen-
ticity. This is based on both subjective factors and
scientific analysis such as stylistic analysis, thermolu-
minescence or carbon-14 analysis, dendrochronologi-
cal study, spectroscopic or microscopic analysis etc.
Unlike these tests, which focus mainly on the visible
parts of the work or on a few samples, CT has the
advantage of describing the inner state of the object,
without damaging it in any way.
[ 4 ] Zahi Hawass, PhD, Secretary General of theSupreme Council of Antiquities, takes a close look atthe mummy of Tutankhamen. Photo courtesy of Brando Quilici
CUSTOMER CARE
SOMATOM Sessions 16 35
L i f e : E D U C AT E
A Win-Win SituationWith the SOMATOM Sensation Cardiac 64 taking cardiac CT to the next level,the need for dedicated customer training increases. Siemens Medical Solutionssupports its customers, providing firsthand know-how, and the possibility toexchange experience with well-versed medical colleagues.
Siemens’ Life customer care solutions
offer an array of measures to customers
to get the most value out of their
systems by maximizing their clinical
know-how. In addition to a full range of
continuous learning programs – from
extensive start-up and technical training
to applications support and web-based
courses – customers can attend work-
shops, fellowships, and symposiums
held in close cooperation with
renowned clinical partners.
Workshops on cardiac computed
tomography (CT) are being held at
Erasmus Medical Center, Rotterdam, The
Netherlands; Friedrich-Alexander Uni-
versity Clinic, Erlangen, Germany; Uni-
versity Hospital Muenster, Germany and
other distinguished institutions. In
co-operation with Siemens, these part-
ners offer regular courses for both
radiologists and cardiologists, combin-
ing lectures and hands-on training on
the SOMATOM Sensation Cardiac 64.
Participants have the chance to observe
patient exams, attend lectures and par-
ticipate in case studies review sessions.
Some physicians just starting with
cardiac CT and with no experience in
radiology, appreciate an even deeper
insight. Frans Santosa, MD, from the
cardiovascular Waringin Medika clinic in
Jakarta, Indonesia, is a German-trained
internist, cardiologist and angiologist,
who was not very familiar with radio-
logy. However, he saw the advantages
of cardiac CT and purchased two
SOMATOM Sensation Cardiac 64s in late
2004, one for his clinic, one for a private
practice he started with some col-
leagues. Just before installation, he
spent quite some time at the Friedrich-
Alexander University Clinic in a fellow-
ship program. “I really appreciate the
chance to learn from my experienced
German colleagues. Everyone has been
very generous sharing their knowledge,
and I now see even more clinical capabil-
ities of the SOMATOM Sensation Cardiac
64 than I thought before,” he resumes.
Not only do the trainees profit from the
fellowship program, but the hosting
clinics as well. Says Stefan Martinoff,
MD, Director of the Clinic for Radiology
and Nuclear Medicine at the German
Heart Center in Munich (DHM), “We
Stefan Martinoff, MD: "Not only doour guests profit from us, we alsoprofit from them. It is a win-winsituation."
Frans Santosa, MD (2nd from right):“Thanks to Siemens’ Life Program,I’ve been able to optimally utilizemy new SOMATOM SensationCardiac 64 right from installation.”
have made some excellent international
connections during the past years. We
are very proud of our worldwide net-
work of physicians and scientists. Our
joint objective is to steadily increase the
quality of medical care.”
Radiologists and cardiologists at the
DHM diagnose CT images together.
“Coronary CT is at its best and optimal
patient care is ensured only when both
specialties sit together at the same
table,” emphasizes Martinoff. “A physi-
cian can not be both a radiologist and a
highly trained cardiologist at the same
time,” he offers with conviction. “This is
why cooperation is a must, although it is
not practiced everywhere due to fre-
quent competition between the two
specialties.”
36 SOMATOM Sessions 16
EDUCATIONCUSTOMER CARE
E D U C AT E
Cross-country Post-processing Events
T E C H N O LO G I ST E D U C AT I O N SYM P O S I U M
CT Imaging and Cherry Blossoms
Following last year’s success, Siemens
Medical Solutions again supported
hands-on training sessions at Professor
Elliot Fishman’s popular “Advanced Top-
ics in Computed Tomography (CT) Scan-
ning” CME accredited courses in Los An-
geles (April 1–3rd, 2005) and Baltimore
(April 8–10th, 2005). Over 300 radiolo-
gists and technologists took advantage
of the opportunity to learn more about
the principles of 3D and virtual imaging
with syngo InSpace4D, CT-Angiography,
cardiac CT, virtual colonography and
lung imaging. Siemens provided 20
LEONARDO workplaces enabling partici-
pants to work individually during each
of the clinical hands-on sessions. Ses-
sions, lead by both experienced Hopkins
faculty and Siemens applications spe-
cialists, gave attendees the opportunity
to work through a wealth of specially
selected clinical cases. Everyone walked
away with a firm grasp of the principles
and clinical application of 3D and virtual
post-processing techniques.
ESGAR’s 3rd CME accredited Hands-on
Workshop, “CT-Colonography” (April 26–
28th, 2005) was hosted by Phillipe Lef-
ere, MD, and Stefaan Gryspeerdt, MD,
from Stedelijk Ziekenhuis, Roeselare, Bel-
gium. Places were limited to 40 for each
of the two concurrent workshops, and a
total of 80 radiologists joined the invited
faculty in the beautiful ancient city of
Bruges, Belgium, for a packed two day
program. The first day of each workshop
was comprehensive with lectures and
hands-on demos on the essentials of CT-
Many customers took advantage of the
outstanding possibility to benefit from
the integrated approach across modali-
ties that Siemens offers for radiology, car-
diology, and oncology solutions. This
year's Technologist Education Sympo-
sium took place in Washington DC, USA
from April 17th to 19th and offered
sessions related to cardiac and vascular
angiography, diagnostic radiology,
computed tomography (CT), magnetic
resonance (MR), nuclear medicine/PET,
oncology, and ultrasound, including
various lectures and hands-on training.
Once again this was a successful event
for everyone who came to learn about
clinical routine and topics encompassing
the cutting edge of medical imaging
technology. The first day, all participants
met for a for a general preview of the
Colonography (CTC) from leading CTC
experts including Johannes Wessling,
MD, (Munster, Germany) and Andrea
Laghi, MD, (Rome, Italy). Day two was
dedicated to tutored hands-on sessions
with faculty members present to guide
the participants through over 100 spe-
cially selected cases. Siemens Medical
Solutions supported the workshop with
six LEONARDO workplaces running syngo
Colonography software. “The workshop
ideally balanced between lectures and
plenty of time for hands-on training. Hav-
ing a clinical expert guiding us through
the more challenging test cases was very
helpful. I came away with useful tips that
will certainly enhance my CTC workflow,“
says Christian Lauer, MD, O.L.V.V. Lour-
des-Ziekenhuis, Belgium.
educational symposium, reviewing case
studies and overall topics concerning
the different healthcare sectors. The
evening ended with a welcome recep-
tion. During the following two days, all
participants had the chance to attend lec-
tures for cardiac & vascular angiography,
diagnostic radiology, CT, MR, or breakout
sessions, according to their own fields of
interest. For CT, there were speakers from
Siemens as well as from well known insti-
tutions, like Andy Trovinger from Radiolo-
gy Imaging Associates and Williams
Jonathan, MD, from Shands Jacksonville.
Several companies exhibited their filming
products, injector systems and MRI ac-
cessories. But even with such an exciting
program, all participants still had enough
time to enjoy Washington’s cherry blos-
soms and socialize at the dinner buffet.
Both, the courses at “Advanced Topics in CT Scanning“ (left), and the Hands-on Workshop “CT-Colonography” at ESGAR (right), were met with enthusiasm.
During the LEONARDO hands-onsession, participants worked withthe latest applications.
CUSTOMER CARE
Via the SOMATOM World User Lounges, Siemens applica-
tions specialists answer your questions on “how to …” easily
use Siemens Computed Tomography scanners and applica-
tions in daily clinical practice. Additionally, SOMATOM Sessions
offers a regular column with frequently asked questions for
offline reference.
Why can’t I remove patient protection to delete studiesfrom the browser?Reload the study back into the exam card, check for open
recon jobs and delete the open recon jobs, if present. Take
note of the position of the chronicle bars: if any are indented,
patient protection is applied. Once the chronicle bars are all
to the left, the study is no longer protected.
Patient information is incorrect. Can I change it afterscanning is completed?After reconstructions are complete, select the patient in the
browser. Be sure that the study is not open in any platform,
no open recon jobs exist and the study is not delete protected.
S E R V I C E
Frequently Asked Questions
On the browser drop down menu, select ’Edit and Correct‘.
A warning box will appear that this is an external document;
select ’Continue‘. The correct platform will then open. The
major topics are on the left side of the vertical tabs and the
right side has the details for each section. Make the neces-
sary changes and sign off with your initials (minimum of
3 letters) in the upper right hand corner of the platform and
then click ‘OK‘ in the bottom left corner.
Why are the images that I sent to filming in reverse order?The order of the images depends on the configuration of
your browser. The sort functions on the browser vary with
each level of the patient study. The selections for the patients
name are alphabetical, chronological, work status or reverse
order. On the series level, multiple and modality specific
selections are also available. Simply select the local database
heading and sort for ’DB Date and Time‘, for the study level
select ’Study Date and Time‘, and the series level should be
set to ’Instance Number‘. Also make sure to deselect any level
with reverse order activated.
7 T H I N T E R N AT I O N A L S O M ATO M C T U S E R C O N F E R E N C E
Exploring the Riches of Multislice CT
of outstanding clinical results in the vari-
ous fields of CT imaging. The 17th centu-
ry Teatro Capranica provided beautiful
surroundings for 60 luminary speakers,
lecturing on topics such as “Technology
Principles of Multislice CT”, “Head and
Neck“, “Chest“, “Cardiac“, “Abdominal“,
and “Vascular CT“, and “New Frontiers in
CT”. The lectures were supplemented by
panel discussions, case demonstrations,
hands-on workstation sessions, and a
poster exhibition.
Professor Roberto Passariello, MD, head
of the Department of Radiologic Sciences,
was chairman of the conference, sup-
ported by Carlo Catalano, MD, Associate
Professor at the same department (both
University Hospital La Sapienza, Rome,
Italy). Professor Elliot Fishman, MD, Johns
Hopkins Hospital, Baltimore, MD. USA,
and Professor Yutaka Imai, MD, Tokai
University, Tokyo, Japan, were co-chair-
men. A CD of the conference will be
available soon.
The more than 150 participants alsoenjoyed the view over Rome’s ancientroofs at an exclusive social event.
High-end clinical applications were at
the center of the 7th International
SOMATOM Computed Tomography (CT)
User Conference, held in conjunction
with the University Hospital La Sapienza,
in Rome, Italy, in May 2005.
The “Eternal City” alone, with its impres-
sive art and architecture, the Forum and
Coliseum, the baroque churches and
the Vatican, would have been enough
to fill everybody’s senses. But there
have been remarkable achievements in
CT technology and applications since
the last Siemens User Conference in
2002, and all participants were eagerly
awaiting the latest information from
research groups from around the world.
Renowned speakers presented a wealth
SOMATOM Sessions 16 37
38 SOMATOM Sessions 16
CUSTOMER CARE
C T O N LI N E
CT on the World Wide Web
www.insideinspace.comInside InSpace introduces technicians
and physicians to syngo InSpace, the
volume imaging application for interac-
tive display of volume datasets from
Computed Tomography and 3D Angio-
graphy. The website offers complete
information on all software features
and specifications. Hints and tips, plus
an 'Ask the Experts' button support
users in getting the most out of syngo
InSpace4D in their daily clinical work. A
selection of feature articles and lectures
is available for reference. The latest
syngo InSpace4D presets are offered for
download. A video and image gallery
introduces interesting cases. The infor-
mation is supplemented by CME course
dates for syngo InSpace.
k
S I E M E N S R E M OT E S E R V I C E
Information and Services AvailableDirectly at Your CT Scanner
In addition, you can always find the latest CT courses offered by Siemens Medical Solutions at www.siemens.com/SOMATOMEducate.
Upcoming Events & Courses
Title Location Short Description Date Contact
6th International Boston, USA International Meeting July 21–23, 2005 cme.med.harvard.edu Conference on Cardiac CT
ESC Stockholm, European Society of Sept. 3–7, 2005 www.escardio.orgSweden Cardiology Congress
ASTRO Denver, USA American Society for Oct. 16–20, 2005 www.astro.orgTherapeutic Radiology and Oncology Congress
TCT Washington, USA Transcatheter Cardiovascular Oct. 17–21, 2005 www.tct2005.comTherapeutics Sympoisium
ESTRO Paris, France European Society for Oct. 30–Nov. 3, 2005 www.estroweb.orgTherapeutic Radiology and Oncology Congress
AHA Dallas, USA American Heart Association Nov. 13–16, 2005 www.americanheart.orgScientific Sessions www.scientificsessions.org
RSNA Chicago, USA Radiological Society of Nov. 27–Dec. 2, 2005 www.rsna.orgNorth America Congress
CME Courses Johns Hopkins University, Focus on multislice CT Regular events, www.CTisus.comUniversity, Baltimore, USA; scanning and please see websiteand other US locations post-processing
Working efficiently in a radiology department becomes more and more dependent
on information. How about finding the latest application guide online? Or easily
receiving information about new software that might simplify daily workflow? Or try-
ing new applications before purchasing? This and much more is possible with
SOMATOM LifeNet, the information
and service portal available free of
charge directly at your Computed
Tomography (CT) scanner consoles.
As a Siemens customer, you can even
download the latest scan protocols to
make sure they are always up to date.
To find out how SOMATOM LifeNet
can help you with your daily work,
simply go to SOMATOM LifeNet under
Options in your syngo menu bar. The
only prerequisite is Siemens Remote
Service, a feature provided at no addi-
tional cost in the Siemens service
agreement.
LifeNet offeres easy access to thelatest information – directly at theCT scanner console.
CUSTOMER CARE
SOMATOM SESSIONS – IMPRINT
PublisherSiemens AG
Medical Solutions
Computed Tomography Division
Siemensstraße 1
D-91301 Forchheim
Responsible for Contents:Bernd Ohnesorge, PhD
EditorsDoris Pischitz, M.A.
Stefan Wuensch, PhD
Editorial BoardJessica Amberg
Joachim Buck, PhD
Thomas Flohr, PhD
Chad DeGraaff
André Hartung
Sandra Jeleazcov
Matthew Manuel
Louise McKenna, PhD
Axel Lorz
Jens Scharnagl
Authors of this IssueGeoffrey Browne, MD,
Alamance Regional Medical Center,
Burlington, USA
Chris DeAngelo RT (R), (CT),
Alamance Regional Medical Center,
Burlington, USA
J. Debus, MD, PhD,
Department of Radiation Oncology,
University of Heidelberg, Germany
Eric Devilaine, Chief of X-ray Technician Team,
Centre Hospitalier Robert Morlevat,
Semur en Auxois, France
J. Dinkel, MD,
Department of Radiation Oncology,
University of Heidelberg, Germany
Carsten Figge, MD,
Radiology Institute/Practice Drs. Mariß/Aref/Figge,
Bad Zwesten, Germany
V. Lambert, MD,
Department of Cardiopediatry,
Marie Lannelongue Hospital,
Le Plessis-Robinson, France
U. Mende, MD, PhD,
Department of Radiation Oncology,
University of Heidelberg, Germany
Jean-François Paul, MD,
Department of Radiology,
Marie Lannelongue Hospital,
Le Plessis-Robinson, France
Jin Zheng Yu, MD,
Department of Radiology,
Peking Union Medical College Hospital,
Beijing, China
Anne Sigal-Cinqualbre MD,
Department of Radiology,
Marie Lannelongue Hospital,
Le Plessis-Robinson, France
Ly Thai Bach, MD, Chief of Radiology Unite,
Centre Hospitalier Robert Morlevat,
Semur en Auxois, France
© 2005 by Siemens AG, Berlin and Munich, All rights reserved
Xue Hua Dan, MD,
Department of Radiology
Peking Union Medical College Hospital,
Beijing, China
Tony De Lisa, freelance writer
Jessica Amberg; Chad DeGraaff; Thomas Flohr,
PhD; Lars Hofmann, MD; Louise McKenna, PhD;
Per Anselm Mahr; Bernd Ohnesorge, PhD; Rainer
Raupach, PhD; Gitta Schulz; Karl Stierstorfer, PhD;
Heiko Tuttas; Claudette Yasell; all Siemens Medical
Solutions
ProductionNorbert Moser, Siemens Medical Solutions
Layoutindependent Medien-Design
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SOMATOM Sessions is also available on the
internet: www.siemens.com/SOMATOMWorld
Note in accordance with § 33 Para.1 of the German Federal Data Protection
Law: Despatch is made using an address file which is maintained with the
aid of an automated data processing system.
SOMATOM Sessions with a total circulation of 35,000 copies is sent free of
charge to Siemens Computed Tomography customers, qualified physicians
and radiology departments throughout the world. It includes reports in the
English language on Computed Tomography: diagnostic and therapeutic
methods and their application as well as results and experience gained with
corresponding systems and solutions. It introduces from case to case new
principles and procedures and discusses their clinical potential.
The statements and views of the authors in the individual contributions do
not necessarily reflect the opinion of the publisher.
The information presented in these articles and case reports is for illustra-
tion only and is not intended to be relied upon by the reader for instruction
as to the practice of medicine. Any health care practitioner reading this
information is reminded that they must use their own learning, training and
expertise in dealing with their individual patients. This material does not
substitute for that duty and is not intended by Siemens Medical Solutions to
be used for any purpose in that regard. The drugs and doses mentioned
herein are consistent with the approval labeling for uses and/or indications
of the drug. The treating physician bears the sole responsibility for the diag-
nosis and treatment of patients, including drugs and doses prescribed in
connection with such use. The Operating Instructions must always be strictly
followed when operating the CT System. The sources for the technical data
are the corresponding data sheets. Results may vary.
Partial reproduction in printed form of individual contributions is permitted,
provided the customary bibliographical data such as author's name and title
of the contribution as well as year, issue number and pages of SOMATOM
Sessions are named, but the editors request that two copies be sent to
them. The written consent of the authors and publisher is required for the
complete reprinting of an article.
We welcome your questions and comments about the editorial content of
SOMATOM Sessions. Manuscripts as well as suggestions, proposals and
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Include your name, address, and phone number and send to the editors,
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SOMATOM Sessions 16 39
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SOMATOMSessions
No.16/June 2005Stanford University’s 7th Annual International Symposium on Multidetector-Row CT June 15-18, 2005
www.siemens.com/medical
COVER STORYThink Clinical!Page 4
NEWSSOMATOM Sensation – 40-Slice TechnologyPage 12
BUINESSSOMATOM Spirit – “And itruns, and runs, and runs...“Page 15
CLINICAL OUTCOMESsyngo Body Perfusion CT – Differential Diagnosis of a PancreasPage 20
SOMATOM Emotion 6 High Resolution OrthopedicsExaminationPage 24
SCIENCEArchaeology – High-techMeets HistoryPage 33
CUSTOMER CARE
LIFE Educate – A Win-Win SituationPage 35
Highlights
SOM
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SOMATOM SessionsIssue No.16/June 2005