fundamental and ivus measurement · myeong-ki hong, m.d., ph.d professor of medicine department of...
TRANSCRIPT
![Page 1: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/1.jpg)
Myeong-Ki Hong, M.D., Ph.DProfessor of Medicine
Department of Medicine,
University of Ulsan College of Medicine
Asan Medical Center, Seoul, Korea
Fundamental and IVUS measurementFundamental and
IVUS measurement
![Page 2: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/2.jpg)
ASAN MEDICAL CENTER
We needed another methodWe needed another methodIndex procedure 1-year follow-up
![Page 3: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/3.jpg)
ASAN MEDICAL CENTER
A
B
C
Cross Section RAO View LAO View
We needed another methodWe needed another method
![Page 4: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/4.jpg)
ASAN MEDICAL CENTER
IVUS is a solution!IVUS is a solution!
![Page 5: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/5.jpg)
ASAN MEDICAL CENTER
ContentsContents
Basic Physics and Equipment
Image Acquisition and IVUS Artifacts
Histology
Quantitative and Qualitative Assessment
Reporting
![Page 6: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/6.jpg)
ASAN MEDICAL CENTER
ContentsContents
Basic Physics and Equipment
Image Acquisition and IVUS Artifacts
Histology
Quantitative and Qualitative Assessment
Reporting
![Page 7: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/7.jpg)
ASAN MEDICAL CENTER
Basic Physics of SoundBasic Physics of Sound
• Sound is a physical phenomenon that transfers energy from one point to another.
• Sound can pass only through matter.
• Ultrasound can be focused into small, well-defined beams that can probe the human body and interact with the tissue structures to form images
![Page 8: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/8.jpg)
ASAN MEDICAL CENTER
PiezoelectricityPiezoelectricity• Piezo- : from piezein (Greek), sqeeze or press • Conversion electricity to sound and vice versa
When a piezoelectric crystal is placed in an electric field, or when charges are applied by external means to its faces, the crystal exhibits strain, i.e. the dimensions of the crystal change.
![Page 9: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/9.jpg)
ASAN MEDICAL CENTER
Ultrasound imaging processUltrasound imaging process
crystal
electric impulse
sound beam returning beam
electric impulse
![Page 10: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/10.jpg)
ASAN MEDICAL CENTER
Comparison of IVUS with other ultrasoundComparison of IVUS with other ultrasound
Technique Transducer size (cm)
Depth (cm)
Intervening tissues
Trans-thoracic > 2 ~3 – 20 Skin, fat, muscle
Trans-esophageal < 1.2 ~2 – 20 Esophagus,
atrium
Intravascular < 0.26 ~0.05 – 4 blood
![Page 11: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/11.jpg)
ASAN MEDICAL CENTER
In early periodIn early period
![Page 12: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/12.jpg)
ASAN MEDICAL CENTER
EquipmentEquipment
Mechanical systems Electronic systems
![Page 13: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/13.jpg)
ASAN MEDICAL CENTER
Image qualityImage quality
• Spatial resolution
- The ability to discriminate small objects
within the ultrasound image
- Axial : parallel to the beam
- Lateral : perpendicular to both the beam
and the catheter
![Page 14: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/14.jpg)
ASAN MEDICAL CENTER
ContentsContents
Basic Physics and Equipment
Image Acquisition and IVUS Artifacts
Histology
Quantitative and Qualitative Assessment
Reporting
![Page 15: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/15.jpg)
ASAN MEDICAL CENTER
Image Acquisitionpullback method
Image Acquisitionpullback method
• Manual pullback- to concentrate on specific regions of
interest- But, possible to skipping over and not to
perform precise measurement- not reproducible
• Motorized pullback- precise, reproducible- to reconstruct image (L-mode, 3D)
![Page 16: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/16.jpg)
ASAN MEDICAL CENTER
Image AcquisitionLongitudinal display (L-mode)Image Acquisition
Longitudinal display (L-mode)• For spatial orientation, assessment of length,
and distribution of plaque
![Page 17: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/17.jpg)
ASAN MEDICAL CENTER
IVUS artifactsnon-uniform rotational distortion (NURD)
IVUS artifactsnon-uniform rotational distortion (NURD)
Full sector NURD Isolated sector NURD
![Page 18: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/18.jpg)
ASAN MEDICAL CENTER
IVUS artifactsair bubble
IVUS artifactsair bubble
![Page 19: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/19.jpg)
ASAN MEDICAL CENTER
ContentsContents
Basic Physics and Equipment
Image Acquisition and IVUS Artifacts
Histology
Quantitative and Qualitative Assessment
Reporting
![Page 20: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/20.jpg)
ASAN MEDICAL CENTER
Histology and IVUSHistology and IVUS
Adventitia
IVUS catheterNormal intima
Ring-down artifact
![Page 21: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/21.jpg)
ASAN MEDICAL CENTER
Histology and IVUSHistology and IVUS
Lipid pool Echolucent intimal areaFibrous cap
Intimal thickening
![Page 22: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/22.jpg)
ASAN MEDICAL CENTER
The Three-Layered Appearanceborder identification
The Three-Layered Appearanceborder identification
IntimaMediaAdventitia
![Page 23: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/23.jpg)
ASAN MEDICAL CENTER
The Three-Layered Appearanceborder identification
The Three-Layered Appearanceborder identification
1. Adventitia : the outer covering of the artery
2. Media : the actual wall of the artery
3. Intima : a layer of endothelial and other cells that make direct contact with the blood inside the artery
4. Lumen : the actual open channel of the artery through which the blood flows.
![Page 24: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/24.jpg)
ASAN MEDICAL CENTER
ContentsContents
Basic Physics and Equipment
Image Acquisition and IVUS Artifacts
Histology
Quantitative and Qualitative Assessment
Reporting
![Page 25: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/25.jpg)
ASAN MEDICAL CENTER
Quantitative measurementlumen measurements
Quantitative measurementlumen measurements
![Page 26: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/26.jpg)
ASAN MEDICAL CENTER
Quantitative measurementlumen measurements
Quantitative measurementlumen measurements
![Page 27: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/27.jpg)
ASAN MEDICAL CENTER
Quantitative measurementatheroma measurements
Quantitative measurementatheroma measurements
![Page 28: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/28.jpg)
ASAN MEDICAL CENTER
Quantitative measurementatheroma measurements
Quantitative measurementatheroma measurements
Atheroma
= EEM
![Page 29: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/29.jpg)
ASAN MEDICAL CENTER
Quantitative measurementatheroma measurements
Quantitative measurementatheroma measurements
Atheroma
= EEM - Lumen
![Page 30: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/30.jpg)
ASAN MEDICAL CENTER
Quantitative measurementatheroma measurements
Quantitative measurementatheroma measurements
Atheroma eccentricity
= A – B / A
![Page 31: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/31.jpg)
ASAN MEDICAL CENTER
Quantitative measurementatheroma measurements
Quantitative measurementatheroma measurements
Atheroma burden
= C – D / C
![Page 32: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/32.jpg)
ASAN MEDICAL CENTER
Quantitative measurementstent measurements
Quantitative measurementstent measurements
![Page 33: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/33.jpg)
ASAN MEDICAL CENTER
Quantitative measurementstent measurements
Quantitative measurementstent measurements
![Page 34: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/34.jpg)
ASAN MEDICAL CENTER
Dicotomous Classification of Remodeling
Positiveremodeling
Intermediateremodeling
Negativeremodeling
Proximal reference Lesion Distal reference
![Page 35: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/35.jpg)
ASAN MEDICAL CENTER
Lesion/Reference EEM CSA
% of lesionsInadequate arterial remodeling: 15%
Contribution of inadequate arterial remodeling to the development of focal coronary artery stenoses: an IVUS study
Mintz GS, et al. Circulation 1997;95: 1791-98
00
5
10
15
20
25
0.5 1.0 1.5 2.0
![Page 36: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/36.jpg)
ASAN MEDICAL CENTER
EEM CSA: 9.0 mm2
Lumen CSA: 2.6 mm2
EEM CSA: 9.0 mm2
Lumen CSA: 2.6 mm2EEM CSA: 21.2 mm2
Lumen CSA: 14.2 mm2
EEM CSA: 21.2 mm2
Lumen CSA: 14.2 mm2STENT CSA: 10.9 mm2STENT CSA: 10.9 mm2
Negative remodelingNegative remodelingStenting aloneStenting alone
![Page 37: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/37.jpg)
ASAN MEDICAL CENTER
EEM CSA: 23.9 mm2
Lumen CSA: 2.3 mm2
EEM CSA: 23.9 mm2
Lumen CSA: 2.3 mm2 STENT CSA 15.4 mm2STENT CSA 15.4 mm2EEM CSA: 18.6 mm2
Lumen CSA: 10.3 mm2
EEM CSA: 18.6 mm2
Lumen CSA: 10.3 mm2
Positive remodelingPositive remodeling
Stenting After DCAStenting After DCA
![Page 38: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/38.jpg)
ASAN MEDICAL CENTER
Quantitative measurementnegative remodeling
Quantitative measurementnegative remodeling
![Page 39: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/39.jpg)
ASAN MEDICAL CENTER
Atheroma MorphologyNormal
Atheroma MorphologyNormal
![Page 40: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/40.jpg)
ASAN MEDICAL CENTER
Atheroma MorphologySoft plaque
Atheroma MorphologySoft plaque
![Page 41: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/41.jpg)
ASAN MEDICAL CENTER
Atheroma Morphologyfibrotic plaque
Atheroma Morphologyfibrotic plaque
![Page 42: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/42.jpg)
ASAN MEDICAL CENTER
Atheroma MorphologyCalcium
Atheroma MorphologyCalcium
![Page 43: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/43.jpg)
ASAN MEDICAL CENTER
Atheroma Morphologyrupture
Atheroma Morphologyrupture
![Page 44: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/44.jpg)
ASAN MEDICAL CENTER
Atheroma Morphologylipid core
Atheroma Morphologylipid core
![Page 45: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/45.jpg)
ASAN MEDICAL CENTER
Atheroma Morphologythrombus
Atheroma Morphologythrombus
![Page 46: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/46.jpg)
ASAN MEDICAL CENTER
ContentsContents
Basic Physics and Equipment
Image Acquisition and IVUS Artifacts
Histology
Quantitative and Qualitative Assessment
Reporting
![Page 47: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/47.jpg)
ASAN MEDICAL CENTER
Reporting of IVUS resultsReporting of IVUS results
Appropriate patient demographic information and date
Indication and brief description of procedure
Basic findings : MLD, minimum stent area, or plaque
burden…
Plaque features : dissection, calcium, or thrombus…
Changes of therapy by IVUS
IVUS-related complications and any consequent
therapy.ACC Clinical Expert Consensus. J Am Coll Cardiol. 2001
![Page 48: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/48.jpg)
ASAN MEDICAL CENTER
In my opinion ….
When you meet the complex cases, IVUS will help you at any time and answer you clearly about difficult questions
![Page 49: Fundamental and IVUS measurement · Myeong-Ki Hong, M.D., Ph.D Professor of Medicine Department of Medicine, University of Ulsan College of Medicine Asan Medical Center, Seoul, Korea](https://reader033.vdocuments.net/reader033/viewer/2022051814/6035fd7248174c31453b2be2/html5/thumbnails/49.jpg)
ASAN MEDICAL CENTER
Image qualityImage quality
• Contrast resolution
- the distribution of the gray scale of the
reflected signal and is often referred to as
dynamic range