Mikami T, Kitabatake A
Department of Cardiovascular Medicine, Hokkaido University School of Medicine.
Nihon Rinsho. 1993 Aug;51(8):2048-53.
Atherosclerosis causes various types of flow disturbances within the affected arteries. Recent advances in the Doppler imaging technique have made possible evaluation of the temporal and spatial flow characteristics in the different portions of the arterial system, such as aorta, coronary, carotid and peripheral arteries. In the diagnosis of dissecting aneurysm of the aorta, transesophageal Doppler color flow imaging is quite useful to detect the site of entry, which is essential information for surgery. Intracoronary flow velocity can be accurately measured by intravascular Doppler technique. The recent introduction of a Doppler-tipped angioplasty guide wire makes it possible to measure the phasic flow deep within a coronary artery. The flow velocity measurement using a duplex system enables us to quantify the stenotic severity in carotid and peripheral arteries, and the Doppler color flow imaging, which has become available recently, also facilitates the demonstration and grading of atheromatous lesions in these arteries.
动脉粥样硬化会在受影响的动脉内引发各种类型的血流紊乱。多普勒成像技术的最新进展使得评估动脉系统不同部位（如主动脉、冠状动脉、颈动脉和外周动脉）的血流时空特征成为可能。在主动脉夹层动脉瘤的诊断中，经食管多普勒彩色血流成像对于检测入口部位非常有用，而这是手术的关键信息。冠状动脉内血流速度可通过血管内多普勒技术准确测量。最近引入的带多普勒探头的血管成形术导丝使得测量冠状动脉深部的阶段性血流成为可能。使用双功系统进行血流速度测量能够量化颈动脉和外周动脉的狭窄严重程度，而最近可用的多普勒彩色血流成像也有助于显示和分级这些动脉中的动脉粥样硬化病变。
