Friedman S G, Hainline B, Feinberg A W, Lesser M L, Napolitano B A
Department of Surgery, North Shore University Hospital, Cornell University Medical Center, Manhasset, New York.
Stroke. 1988 Jul;19(7):910-2. doi: 10.1161/01.str.19.7.910.
Duplex scanning of the carotid bifurcation has emerged as an accurate noninvasive means of predicting and quantifying carotid arterial stenoses. Compared with the more widely reported measurements of spectral broadening and peak frequency ratios, measurements of diastolic velocity ratios have theoretical advantages in predicting carotid artery stenosis. The use of diastolic velocity ratios between the internal and common carotid arteries was prospectively studied in 30 consecutive patients to determine its accuracy in predicting significant stenosis of the internal carotid artery when compared with angiography. A total of 55 carotid bifurcations were studied, and the use of diastolic velocity ratios correctly predicted high-grade stenosis (greater than or equal to 75% diameter reduction) in 52 cases (95%). We conclude that diastolic velocity ratios may be used to accurately detect significant internal carotid artery stenosis.
颈动脉分叉处的双功扫描已成为一种准确的无创方法，用于预测和量化颈动脉狭窄。与报道更为广泛的频谱增宽和峰值频率比测量相比，舒张期速度比测量在预测颈动脉狭窄方面具有理论优势。对30例连续患者前瞻性地研究了颈内动脉与颈总动脉之间舒张期速度比的应用，以确定其与血管造影相比在预测颈内动脉严重狭窄方面的准确性。共研究了55个颈动脉分叉，舒张期速度比的应用在52例（95%）中正确预测了重度狭窄（直径减少大于或等于75%）。我们得出结论，舒张期速度比可用于准确检测颈内动脉的严重狭窄。
