Hobson R W, Berry S M, Katocs A S, O'Donnell J A, Jamil Z, Savitsky J P
Surgery. 1980 Mar;87(3):286-93.
Accuracy and clinical applications of noninvasive imaging of the extracranial carotid arteries were compared using pulsed Doppler and real-time B-mode ultrasonography. During the period December, 1977, to February, 1979, 530 ultrasonograms (265 patients) were performed. Angiographic correlations were available in 90 patients (172 arteries) using the pulsed Doppler technique, and both techniques were employed in 43 patients (84 arteries). Greatest accuracy with pulsed Doppler ultrasonography occurred in confirmation of normal vasculature (73%) and diagnosis of occluded internal carotid arteries (96%). Estimation of the percentage of stenosis was less accurate; however, this determination could be made somewhat more accurately by B-mode ultrasonography. Incidence of false positive and negative results for the pulsed Doppler technique was 11% and 14%, respectively, whereas for the corresponding incidence for B-mode imaging it was 11% and 59%. The higher incidence of false negative results with the B-mode technique related to its inaccuracy in diagnosis of occlusion (18%). Current clinical applications of carotid ultrasonography include confirmation of normalcy and diagnosis of occlusion, visualization of atheroslerotic plaques with characterization of their size and ultrasonic morphology, and an anticipated reduction in the requirements for contrast arteriography in selected patients.
使用脉冲多普勒和实时B型超声对颅外颈动脉的无创成像的准确性及临床应用进行了比较。在1977年12月至1979年2月期间，共进行了530次超声检查（265例患者）。90例患者（172条动脉）使用脉冲多普勒技术进行了血管造影相关性研究，43例患者（84条动脉）同时采用了这两种技术。脉冲多普勒超声检查在确认正常血管系统（73%）和诊断颈内动脉闭塞（96%）方面准确性最高。对狭窄百分比的估计准确性较低；然而，B型超声检查在这方面的判断可能会更准确一些。脉冲多普勒技术的假阳性和假阴性结果发生率分别为11%和14%，而B型成像的相应发生率分别为11%和59%。B型技术假阴性结果发生率较高与其在诊断闭塞方面的不准确性（18%）有关。目前颈动脉超声检查的临床应用包括确认正常情况和诊断闭塞、可视化动脉粥样硬化斑块并描述其大小和超声形态，以及预计在部分患者中减少对造影剂血管造影的需求。
