Colour duplex flow imaging in carotid arterial disease: correlation with intra-arterial digital angiography.
Colour duplex flow imaging is a highly accurate form of non-invasive assessment of the extra-cranial carotid circulation. This method is precise in characterising the degree of carotid stenosis, when compared with intra-arterial digital subtraction angiography. The accuracy of colour duplex in defining mild (1-30%), moderate (31-70%) and severe (71-99%) stenosis was 96%, 95% and 98%, respectively. Sensitivities and specificities were greater than 90% in each category, while positive and negative predictive values ranged from 96% to 100%.
Todman
D H
DH
Department of Neurology, Greenslopes Repatriation Hospital, Brisbane.
Hewson
D J
DJ
Seneviratne
B
B
Walsh
P
P
D015901:Angiography, Digital Subtraction; D002342:Carotid Artery, External / Q000000981:diagnostic imaging; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D016893:Carotid Stenosis / Q000000981:diagnostic imaging*; D003116:Color; D006801:Humans; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D014463:Ultrasonography / Q000379:methods