Dillon E H, van Leeuwen M S, Fernandez M A, Eikelboom B C, Mali W P
Department of Diagnostic Radiology, University Hospital Utrecht, The Netherlands.
Radiology. 1993 Oct;189(1):211-9. doi: 10.1148/radiology.189.1.8372196.
To determine whether computed tomographic (CT) angiography can be used to accurately quantify carotid stenoses and differentiate severe stenoses from occlusions.
CT angiography was used to evaluate 50 carotid arteries in 27 patients who were referred for surgical evaluation after diagnosis of carotid stenosis and who had undergone standard angiography. Four observers read each study separately in a blinded fashion, then all four observers together reviewed those studies in which the individual readings differed to reach a consensus reading.
The consensus readings for the two modalities were in agreement on stenosis category in 41 (82%) of the 50 carotid arteries (kappa W = 0.852 +/- 0.114). The consensus readings in the other nine arteries differed by only one category; seven had less severe stenosis at CT angiography and two had more severe stenosis. The CT angiograms also depicted a variety of additional abnormalities, including loops (n = 6), aneurysms (n = 2), and ulcers (n = 4).
These results indicate that CT angiography can non-invasively provide most of the information needed before carotid endarterectomy.
确定计算机断层扫描（CT）血管造影术能否用于准确量化颈动脉狭窄程度，并区分严重狭窄与闭塞。
对27例经诊断为颈动脉狭窄并接受了标准血管造影检查后转诊进行手术评估的患者的50条颈动脉进行CT血管造影评估。四名观察者分别以盲法阅读每项研究，然后四名观察者共同复查那些个体阅读结果存在差异的研究，以达成共识性阅读结果。
两种检查方式的共识性阅读结果在50条颈动脉中的41条（82%）的狭窄类别上达成一致（kappa W = 0.852 ± 0.114）。其他九条动脉的共识性阅读结果仅相差一个类别；七条在CT血管造影检查时狭窄程度较轻，两条狭窄程度较重。CT血管造影还显示了各种其他异常情况，包括血管袢（n = 6）、动脉瘤（n = 2）和溃疡（n = 4）。
这些结果表明，CT血管造影术可以在不进行侵入性检查的情况下提供颈动脉内膜切除术所需的大部分信息。
