多普勒波形小而缓慢。近端血流梗阻的征象。
Doppler waveform parvus and tardus. A sign of proximal flow obstruction.
作者信息
Kotval P S
机构信息
Department of Radiology, New York Medical College, Valhalla 10595.
出版信息
J Ultrasound Med. 1989 Aug;8(8):435-40. doi: 10.7863/jum.1989.8.8.435.
PMID:2668554
Abstract
The Doppler linear flow velocity versus time spectrum obtained in an arterial flow system in which there is proximal occlusive disease with or without collateral formation has a tardus-parvus waveform. The conditions that cause this Doppler sign are due to a poststenotic pressure drop.
摘要
在存在或不存在侧支循环形成的近端闭塞性疾病的动脉血流系统中获得的多普勒线性血流速度与时间频谱具有迟缓-低平波形。导致这种多普勒征象的情况是由于狭窄后压力降。
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