ultrasonografia carotidiana
DESCRIPTION
prezentare rolul ultrasonografiei Doppler in evaluarea arterelor carotideTRANSCRIPT
ULTRASONOGRAFIA ULTRASONOGRAFIA CAROTIDIANACAROTIDIANA
Alexandru AndritoiuAlexandru Andritoiu,, MD MD
Sp. Militar Clinic de Urgenta CraiovaSp. Militar Clinic de Urgenta CraiovaESC, EAS, Artery Research
SistemulSistemul carotidiancarotidian(extra(extra--craniancranian))
(A) (B)
Variante geometrice Variante geometrice ale ale bifurcatieibifurcatiei carotidienecarotidiene
PoligonulPoligonul WillisWillis
Henri Marie Coanda Henri Marie Coanda (1886–1972)(1886–1972)
,,Coanda effect or wall-attachment effect (1930) - the tendency of a moving fluid, either liquid or gas, to attach itself to a surface and flow along it,,
Principiul BernoulliPrincipiul Bernoulli
In fluid dynamics, In fluid dynamics, Bernoulli's Bernoulli's principleprinciple states that for a flow, an states that for a flow, an increase in the speed of the fluid occurs increase in the speed of the fluid occurs simultaneously with a decrease simultaneously with a decrease in pressure or a decrease in in pressure or a decrease in the fluid's potential energy.the fluid's potential energy.
Bernoulli's principle is named after Bernoulli's principle is named after the Dutch-Swiss mathematician Daniel the Dutch-Swiss mathematician Daniel Bernoulli who published his principle in his Bernoulli who published his principle in his book book HydrodynamicaHydrodynamica in 1738. in 1738.
Tehnici de examinare Tehnici de examinare USUS ANATOMICEANATOMICE B-modB-mod PanoramicaPanoramica 3D3D IVUSIVUS CEUSCEUS
HEMODINAMICEHEMODINAMICE B-flowB-flow Sie-flowSie-flow Doppler spectralDoppler spectral AngioAngio CEUSCEUS TDITDI
SetariSetari
BB--modmod
GaineGaine
DGCDGC
DepthDepth
PowerPower
Dynamic rangeDynamic range
Focus Focus
DOPPLERDOPPLER
PRF (meanPRF (mean--high)high)
ColorColor--boxbox
SteerSteer
BaseBase--lineline
SyncroneSyncrone
Gate Gate
Scale Scale
Angle <60 Angle <60 grgr
B-modB-mod
Sectiune in axul lung Sectiune in ax transversal
ACC
ACI
ACE
Doppler spectralDoppler spectral
Indicii spectraliIndicii spectrali
Valorile de referinta ale parametrilor Doppler Valorile de referinta ale parametrilor Doppler spectral pentru segmentul extracranian al spectral pentru segmentul extracranian al arterelor carotidearterelor carotide
ACCACI
proximalaACI
distala
Vmax S (cm/s) 59 57 65
Vmin D (cm/s) 15 22 27
Legenda: Analiza a fost efectuata pe un lot de subiecti potriviti ca varsta si sex:
21-40 ani (N=46), 41-60 (N=56), >60 ani (N=56). Pentru sexul feminin s-au remarcat valori mai mari ale
velocitatilor in ACI, dar nu si in ACC. Andritoiu A 2009
IR - VarstaIR - Varsta
0,790,76
0,740,720,72
0,6
0,65
0,7
0,75
0,8
0,85
40-49 50-59 60-69 70-79 80-89
Ani
IR
N = 405; varsta 40-90 ani
Andritoiu A 2009
Diametrul carotidianDiametrul carotidian
6,375,89
1
2
3
4
5
6
7
Dia
met
rul A
CC
(m
m)
B
F
Diametrul mediu al ACC masurat la un lot de 405 subiecti cu varsta intre 40-85 ani (237 B si 168 F)
Diametrul mediu in grupul barbatilor a fost de 6.37+/-0.7 mm, iar in cel al femeilor de 5.89+/-0.6 mm (p<0.01). Varsta medie a celor doua grupuri nu a fost diferita statistic.
Andritoiu A 2009
(1) diametrul si grosimea medio-intimala normale, (2) ingrosare izolata a complexului intima-medie, (3) cresterea izolata a diametrului arterial, (4) cresterea in dimensiuni atat a diametrului cat si a
complexului intima-medie.
Fenotipuri arterialeFenotipuri arteriale
Eigenbrodt ML 2008
25 23
38
58
75
0
20
40
60
80
4-4,9 5-5,9 6-6,9 7-7,9 8-8,9
Diametrul ACC (mm)
% P
laci
lor
Relatia D – Frecv. Placi ATSRelatia D – Frecv. Placi ATS
Rezultate obtinute prin evaluarea ultrasonografica a unui lot de 405 subiecti cu varsta cuprinsa intre 40-85 ani.
Andritoiu A 2009
CIMTCIMT
CIMTCIMT
.
Carallo C et al. Hypertension 1999;34:217-221
Relatia CIMT - mean wall shear stress (relatie directa)
.
Carallo C et al. Hypertension 1999;34:217-221
Relatia CIMT - mean circumferential wall tension (relatie inversa)
CIMTCIMT
Masuratori manualeMasuratori manuale Masuratori Masuratori
automateautomate
VN <0.9 mm
MMaasursurareaarea CIMT CIMT prin ecografie in mod prin ecografie in mod BBExExeemplmpluu de la unde la un sub subiiect ect din studiuldin studiul METEOR METEOR
Detaliu aratand masurarea CIMTImagine ecografica a arterei carotide
CIMT - CEUSCIMT - CEUS
CIMT –Marker de risc CIMT –Marker de risc C-VC-V
Scorul de risc (Framingham, Scorul de risc (Framingham, SCORE)SCORE)
Boala coronariana ischemicaBoala coronariana ischemica Sdr. metabolicSdr. metabolic Arteriopatia obliterantaArteriopatia obliteranta Disfunctia endoteliala Disfunctia endoteliala
(%FMD)(%FMD) Markerii de inflamatie (hs Markerii de inflamatie (hs
CRP)CRP)
Studiul ARIC Studiul ARIC Studiul Rotterdam Studiul Rotterdam Cardiovascular Cardiovascular
Health StudyHealth Study
Volume 340:14-22 January 7, 1999 Number 1
Carotid-Artery Intima and Media Thickness as a Risk Factor for Myocardial Infarction and Stroke in Older Adults
Daniel H. O'Leary, M.D., Joseph F. Polak, M.D., M.P.H., Richard A. Kronmal, Ph.D., Teri A. Manolio, M.D., M.H.S., Gregory L. Burke, M.D., M.S., Sidney K. Wolfson, M.D., for The Cardiovascular
Health Study Collaborative Research Group
Incidence of Myocardial Infarction or Stroke According to Quintile of Carotid-Artery Intima–Media Thickness.
IMT in subjects with and without clinical atherosclerosis.
Hashimoto M et al. Arteriosclerosis, Thrombosis, and Vascular Biology. 1999
CIMT – genetica HDL CIMT – genetica HDL
Relatia CIMT - varstaRelatia CIMT - varsta
0
0,2
0,4
0,6
0,8
40-49 50-59 60-69 70-79 80-89
Ani
CIM
(m
m)
N = 405 subiecti; varsta 40-90ani
Andritoiu A 2009
CIMT sex M > CIMT sex CIMT sex M > CIMT sex FF
0,42
0,44
0,46
0,48
0,5
0,52
0,54
CIM
(m
m)
B F
p<0.01
N = 405 subiecti; 237 B – 168 Fvarsta 40-90 ani
Andritoiu A 2009
Relatia dintre grosimea Relatia dintre grosimea CIM CIM si prezenta placilor ATS si prezenta placilor ATS
0,44
0,63
0
0,2
0,4
0,6
0,8
Placa Non-Placa
r = 0.40; p<0.0001; IC95% 0.281-0.514
N = 405 subiecti; varsta 40-90 ani
Andritoiu A 2009
Influenta CIM asupra IR este Influenta CIM asupra IR este semnificativa statistic semnificativa statistic
r = 0.21, p = 0.03 r = 0.21, p = 0.03
((ICIC 95%95%;; 0.073-0.338) 0.073-0.338)
Andritoiu A 2009
PLACA DE ATEROMPLACA DE ATEROM
Prevalenta placilor Prevalenta placilor carotidienecarotidiene
Pacienti cu placa;
515; 40%Pac. fara
placa; 780; 60%
N = 1295 subiecti; 40-90 ani; B 720: F 575
Andritoiu A, nepubl.
Prevalenta placilor ATS Prevalenta placilor ATS pe decade de varstape decade de varsta
13,7928,35
43,857,14
81,25
0
20
40
60
80
100
40-49 50-59 60-69 70-79 80-89
Ani
Pre
vale
nta
%
N =405; 40-90 ani
Andritoiu A 2009
Aspecte Aspecte
Placi nodularePlaci nodulare Placi parietalePlaci parietale
Placa ,,in musuroi,,Placa ,,in musuroi,,
Aria placii de ateromAria placii de aterom
Volumul placiiVolumul placii
Reconstructie 3DReconstructie 3D
Ecogenitatea Ecogenitatea
Anecogena Anecogena Hipoecogena Hipoecogena EcogenaEcogena HiperecogenaHiperecogena Hiperecogena cu con de umbra (Ca++)Hiperecogena cu con de umbra (Ca++)
REPERE• Lumenul vascular• Mm SCM• Adventicea (apofiza traversa)
Placa vulnerabilaPlaca vulnerabila
Placa instabila Placa instabila (,,la (,,la risc,,)risc,,)
Capison subtireCapison subtire Suprafata ulcerataSuprafata ulcerata Miez lipidicMiez lipidic Hipo/anecogenaHipo/anecogena
Analiza histografica a Analiza histografica a placiiplacii
Reconstructie 3D Reconstructie 3D distributia Gray-scale distributia Gray-scale valuevalue
Elastografia placii?Elastografia placii?
NU! Doar Adobe Photoshop!!!!
Mapping color Mapping color ((Adobe PhotoshopAdobe Photoshop))
Adobe Photoshop – Gradient Map
ROI - Gradient Map
Relation between plaque characteristics and primary outcome.
Hellings W E et al. Circulation 2010;121:1941-1950
Mecanismele Mecanismele neoangiogenezei neoangiogenezei
Neovascularizatia Neovascularizatia placiiplacii
Feinstein SB - JACC 2006
Neovascularizatia Neovascularizatia placii -CEUSplacii -CEUS
Staub D - Stroke 2010
Coli S. et al. J Am Coll Cardiol 2008;52:223-230
Vessel Density at Histology According to Plaque Contrast-Agent Enhancement
Coli S. et al. J Am Coll Cardiol 2008;52:223-230
Hypoechoic Carotid Plaque With Extensive (Grade 2) Contrast-Agent Enhancement
Relatia dintre Relatia dintre neovascularizatie si neovascularizatie si instabilitatea placiiinstabilitatea placii
Matsumoto N 2010
Coli S. et al. J Am Coll Cardiol 2008;52:223-230
Plaque Without Contrast-Agent Enhancement Showing Scant Neovascularization at
Histology
Coli S. et al. J Am Coll Cardiol 2008;52:223-230
Plaque With Grade 2 Contrast-Agent Enhancement Showing Abundant Neovascularization at Histology
Coli S. et al. J Am Coll Cardiol 2008;52:223-230
Grade of Contrast-Agent Enhancement According to Plaque Echogenicity
Neovascularizatia Neovascularizatia placii si riscul C-Vplacii si riscul C-V
Staub D - Stroke 2010
Placa ulcerataPlaca ulcerata
CEUS – ulceratia placiiCEUS – ulceratia placii
Feinstein SB - JACC 2006
STENOZA STENOZA CAROTIDIANACAROTIDIANA
15
6
stenoza ocluzie
Prevalenta stenozei si Prevalenta stenozei si ocluziei carotidieneocluziei carotidiene
1.15/1000
0.46/1000
Andritoiu A, nepubl.
N = 1295 subiecti; 40-90 ani; B 720: F 575
CalcululCalculul stenozeistenozei((angiograficangiografic))
d
NASCET vs ECST vs CC
Calculul angiografic al Calculul angiografic al stenozei carotidienestenozei carotidiene
NASCET vs ESCTNASCET vs ESCT
Metoda americanaMetoda americana(NASCET, ACAS)(NASCET, ACAS)
Metoda europeana Metoda europeana ESCTESCT
30%30%40%40%50%50%60%60%70%70%80%80%90%90%
65%65%70%70%75%75%80%80%85%85%91%91%97%97%
Stenoza ACI - Doppler Stenoza ACI - Doppler colorcolor
METODELE METODELE PLANIMETRICEPLANIMETRICE
% D% A
% Stenozei% Stenozei PSV(cm/s)PSV(cm/s) EDV (cm/s)EDV (cm/s) PSV ACI/PSV PSV ACI/PSV ACCACC
<50<50 <150<150 <50<50 <1.8<1.8
50-7050-70 150-250150-250 50-9050-90 1.8-2.81.8-2.8
70-90 70-90 250-400250-400 90-15090-150 2.8-52.8-5
90-9990-99 >400>400 >150>150 >5>5
METODELE METODELE VELOCIMETRICEVELOCIMETRICE
RelatiaRelatia MeanVMeanV RatioRatio--AngiografieAngiografie
3D Power3D Power--angioangio
Wessels T- Stroke 2004
Stenoza severa (asimptomatica) de ACI la un pacient in varsta de 68 ani. Examinarea Doppler color evidentiaza flux stenotic, cu aliasing color. Planimetric (%D), stenoza este apreciata la 77% - metoda europeana ESCT. Diametrul lumenului stenozei este de aproximativ 1.5 mm. Examinarea power-angio evidentiaza tendinta de stenoza preocluziva, cu efilarea zonei de culoare. In modul spectral, PSV este estimata la 260 cm/s.
CuantificareaCuantificarea stenozeistenozeicarotidienecarotidiene prinprin IVUSIVUS
GhiduriGhiduri
2003-The Society of 2003-The Society of Radiologists in Ultrasound Radiologists in Ultrasound ConsensusConsensus
2008- Joint Recommendation 2008- Joint Recommendation for Reporting Carotid for Reporting Carotid Ultrasound Investigations in Ultrasound Investigations in the United Kingdomthe United Kingdom
Gradarea US a stenozei Gradarea US a stenozei ACIACI
Gradul stenozei Gradul stenozei (%)(%)
PSV ACI PSV ACI (cm/s)(cm/s)
Raport PSVRaport PSV
NormalNormal <125<125 <2<2
<50<50 <125<125 <2<2
50-6950-69 125-230125-230 2-42-4
>70-90>70-90 >230>230 >4>4
PreocluziePreocluzie VariabilVariabil VariabilVariabil
OcluzieOcluzie NedetectabilNedetectabil NedetectabilNedetectabil
Society of Radiologists in Ultrasound; Grant EG et al- Radiology 2003;229:340-346)
Dr. Eugene StrandnessUniversity of Washington
Normal = no plaque, no turbulence PSV <125 cm/sec 1-15 % stenosis = minimal plaque, PSV < 125 cm/sec 16-49 % stenosis = moderate plaque, mild spectral
broadening throughout systole, PSV < 125 cm/second 50-79 % stenosis = PSV > 125 cm/second, greater
spectral broadening throughout systole, heavier, more prominent plaque
formation present. 80-99% stenosis = PSV > 125 cm/sec, marked spectral broadening and turbulence, severe plaque formation,
and end diastolic velocity elevated > 140cm/second occlusion
Ocluzie ACI dr.Ocluzie ACI dr.Stenoza contra-laterala Stenoza contra-laterala stgstg
Arterita TakayasuArterita Takayasu
Algoritm de managemnet al Algoritm de managemnet al stenozei carotidienestenozei carotidiene
American Heart Association & National Stroke Association
= +
STENOZA CAROTIDIANA >60% (N=197)
12%
66%
34%Stenoza >60% - AIT/AVC
Lez carotidiene – deficit motor
RelatiaRelatia StenozaStenoza /AIT/AIT--AVCAVC
Andritoiu A-2009
Frecventa stenozei carotidiene (>60%), masurata planimetric prin ultrasonografie, la un lot de 197
pacienti spitalizati pentru AVC ischemic
Riscul major al Riscul major al stenozei carotidienestenozei carotidiene
Infarct cerebral (stroke) Infarct cerebral (stroke) homolateral pentru stenoza homolateral pentru stenoza simptomaticasimptomatica
Deces de cauza cardiaca pentru Deces de cauza cardiaca pentru stenoza asimptomaticastenoza asimptomatica
OCLUZIA CAROTIDIANAOCLUZIA CAROTIDIANA
OcluzieOcluzie de ACI de ACI ((angiografieangiografie standard)standard)
ColateraleleColateralele din din ocluziaocluzia ACIACI
Rutgers DR et al. Stroke 2000
TipurileTipurile hemodinamicehemodinamiceintraintra--orbitareorbitare @n @n ocluziaocluzia ACIACI
Yamamoto T- Br J Ophthalmol 2004
Ocluzie ACI - CEUSOcluzie ACI - CEUS
Manifestari alegodermitice dupa administrarea de SonoVue, la un pacient in varsta de 40 ani, cu teren atopic (alergie la Penicilina). Reactia alergica s-a manifestat tardiv (la peste 8 ore de la injectare) cu elemente cutanate de tip urticarian, insotite de prurit intens, tumefactia extremitatilor si fotosensibilizare, ce s-au remis lent dupa administrare de cortizon si antihistaminice (colectia Dr. Andritoiu A)
Ligatura ACILigatura ACI
Ligatura ACELigatura ACE
Preocluzia ACIPreocluzia ACI
FFF utile! Examinarea ACI distala / trans-orala
Falsa ocluzieFalsa ocluzie
A oftalmicaA oftalmica
ACM homolateralaACM homolaterala
Debitul cerebralDebitul cerebral
Q cer = Q ACI dr + Q ACI stg + Q AV dr + Q AV stg
Q = TAV x A
Varsta (ani) 20-39 40-59 60-85
Q cerebral (mL/min) 727+/-102 656+/-121 603+/-106
Scheel P - Stroke 2000
QCG in stenoza QCG in stenoza carotidianacarotidiana
532+/-89
224+/-89
Stenozaasimptomatica
Stenozasimptomatica
QC
G (
mL/
min
)
Lam WWM - J Ultrasound Med 2003
Angioplastia Angioplastia vs vs EndarterectomiaEndarterectomia
Endarterectomia Endarterectomia
US intraUS intra--operatorieoperatorie
Stenturi carotidieneStenturi carotidiene
ParametriiParametrii spectralispectrali aiaistentuluistentului carotidiancarotidian
77+/-4
25+/-2
70+/-3
17+/-1
90+/-4
26+/-2
86+/-5
24+/-2
92+/-6
24+/-2
PSV (cm/s)
EDV (cm/s)
Kupinski AM. J Vasc Ultrasound 2004
Restenoza post Restenoza post endarterectomieendarterectomie
Restenoza post Restenoza post stentarestentare
Limitele cut-off propuse Limitele cut-off propuse pentru restenoza intra-pentru restenoza intra-stentstent
RestenozRestenozaa PSV (cm/s)PSV (cm/s) ACI/ACCACI/ACC
50-69%50-69% 240240 2.452.45
>70%>70% 450450 4.34.3
Chi Y-W - Catheterization and Cardiovascular Interventions 2007
Rezultatele terapiei Rezultatele terapiei hipolipemiante in regresia hipolipemiante in regresia ATSATS
Reducerea LDL Col Regresia Reducerea LDL Col Regresia CIMTCIMT
Timp (ani)
Mod
ifica
rea
IMT
la c
ele
12
nive
le d
in c
arot
ide
(m
m)
-0,01
+0,01
0,00
+0,02
21
+0,03
Pro
gre
sie
Reg
resi
e
P=NS(CRESTOR vs. curba zero)
Placebo+0,0131 mm/an
(n=252)
Rosuvastatin 40 mg-0,0014 mm/an
(n=624)
P<0,0001 (CRESTOR vs. placebo)
Placebo; Modificarea CIMT (95% CI)
Rosuvastatin 40 mg; Modificarea CIMT (95% CI)
METEOR METEOR ModificareaModificarea IMT IMT maxim la celemaxim la cele 12 12 nivele din nivele din
carotidcarotidee (Rosuvastatin vs placebo) (Rosuvastatin vs placebo)
Crouse JR, et al. JAMA 2007;297;12:1344-53
Ainsworth CD - Stroke 2005
Reducerea volumului placii sub terapia Reducerea volumului placii sub terapia
cu Atorvastatin 80 mg/zi – evaluare la 3 lunicu Atorvastatin 80 mg/zi – evaluare la 3 luni
Studii de fiziologieStudii de fiziologie
CompliantaComplianta DistensibilitateaDistensibilitatea Modulul de Modulul de
elasticitateelasticitate
Haluska et al. Cardiovascular Ultrasound 2007
Distensibilitatea ACIDistensibilitatea ACI
Mancia G et al. Hypertension 2001
Cinetica peretelui Cinetica peretelui carotidian carotidian si a placiisi a placii (AWM) (AWM) TDITDI
Ramnarine et al. Cardiovascular Ultrasound 2003
Ramnarine et al. Cardiovascular Ultrasound 2003
PWVPWV
Calabia et al. Cardiovascular Ultrasound 2011
ABC-ul US carotidiene
A = anatomieIdentificarea vaselor este corecta?Cat de bine este vizualizata bifurcatia ?
B = B-modeCauta placile pe axul ACC, ACI (omogene/heterogene)
C = ColorSe vizualizeaza stenoza?Stenoza <60% se estimeaza planimetric!
D = Doppler spectralVelocitatile ACI sunt concordante cu estimarea planimetrica a stenozei?
Message take homeMessage take home