Todman D H, Hewson D J, Seneviratne B, Walsh P
Department of Neurology, Greenslopes Repatriation Hospital, Brisbane.
Clin Exp Neurol. 1991;28:66-70.
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%.
彩色双功能血流成像术是一种对颅外颈动脉循环进行无创评估的高度精确的方法。与动脉内数字减影血管造影术相比，该方法在确定颈动脉狭窄程度方面较为精确。彩色双功能血流成像术在定义轻度（1%-30%）、中度（31%-70%）和重度（71%-99%）狭窄时的准确率分别为96%、95%和98%。每一类别的敏感性和特异性均大于90%，而阳性和阴性预测值范围为96%至100%。
