Burns R P, Cofer J B, Russell W L, Clements J B
South Med J. 1985 May;78(5):518-22. doi: 10.1097/00007611-198505000-00005.
Real time B-mode ultrasonography is a currently popular technique used to screen patients with suspected carotid vascular disease and identify those who need cerebral angiography. From September 1981 through February 1983, 1,205 patients had carotid ultrasonography in the Vascular Laboratory at Erlanger Medical Center. Retrospective review of these patients identified 260 who also had cerebral angiography. In these 260 patients, 517 arteries were studied with ultrasound and then compared to angiographic results, using the angiograms as control. In this study, there was a technical success rate of 89% for all ultrasonic procedures done. With positive disease considered as stenosis of more than 40%, the overall accuracy was 79%, sensitivity was 81%, and specificity was 77%. The false-positive rate was 14% and the false-negative rate 7%. Carotid ultrasonography accurately detected total vessel occlusion in 91% of such cases. Ultrasonic studies were not consistently accurate in the detection of ulcerative plaques where compared to angiographic results.
实时B型超声检查是目前一种常用的技术，用于筛查疑似患有颈动脉血管疾病的患者，并确定那些需要进行脑血管造影的患者。从1981年9月到1983年2月，有1205名患者在厄兰格医疗中心的血管实验室接受了颈动脉超声检查。对这些患者进行回顾性研究后，确定有260名患者也进行了脑血管造影。在这260名患者中，对517条动脉进行了超声检查，然后以血管造影结果作为对照，将超声检查结果与之进行比较。在这项研究中，所有超声检查操作的技术成功率为89%。将阳性疾病定义为狭窄超过40%，总体准确率为79%，敏感性为81%，特异性为77%。假阳性率为14%，假阴性率为7%。颈动脉超声检查在91%的此类病例中准确检测出血管完全闭塞。与血管造影结果相比，超声检查在检测溃疡性斑块方面并不总是准确的。
