Branas C C, Weingarten M S, Czeredarczuk M, Schafer P F
Vascular Blood Flow Laboratory, Graduate Hospital, Philadelphia, PA 19146.
J Ultrasound Med. 1994 Feb;13(2):121-7. doi: 10.7863/jum.1994.13.2.121.
The results of conventional duplex scanning were compared with QCDFI. A total of 224 consecutive patients comprising 442 unilateral carotid systems were examined by conventional duplex techniques. MPSV, as determined by QCDFI, were recorded for each of the 442 carotid segments and grouped according to the previously determined degrees of stenosis. The predictive value of QCDFI was confirmed by angiography with an overall accuracy of 91%. Results obtained by duplex scanning correlated with angiography 89% of the time. Based on QCDFI data, a scale to grade carotid stenosis was developed.
将传统双功扫描的结果与QCDFI进行了比较。共有224例连续患者（包括442个单侧颈动脉系统）接受了传统双功技术检查。通过QCDFI测定的最大峰值收缩速度（MPSV）记录在442个颈动脉节段中的每一个，并根据先前确定的狭窄程度进行分组。QCDFI的预测价值通过血管造影得到证实，总体准确率为91%。双功扫描获得的结果与血管造影结果在89%的时间内相关。基于QCDFI数据，制定了一个颈动脉狭窄分级量表。
