Masui T, Caputo G R, Bowersox J C, Higgins C B
Department of Radiology, University of California, San Francisco, USA.
J Comput Assist Tomogr. 1995 May-Jun;19(3):449-54. doi: 10.1097/00004728-199505000-00020.
The purpose of this study was to evaluate both morphology and blood flow in peripheral arteries with occlusive lesions using MR angiography (MRA) and velocity-encoded cine MRI.
Two-dimensional time-of-flight MRA and velocity-encoded cine MRI were performed in nine patients with peripheral arterial occlusive disease. Findings on MR angiograms were verified by conventional angiography.
All the stenotic lesions in the popliteal arteries were depicted by MRA. The degree of the stenoses in the artery was overestimated by MRA. Major collateral circulations were demonstrated. Velocity-encoded cine MRI provided flow velocity information on the arteries above and below the stenoses. The flow velocity waveform was monophasic above and below the stenosis. The peak systolic velocity in the artery below the stenosis was reduced compared with that above the stenosis (p < 0.05).
The combination of MRA and velocity-encoded cine MRI has clinical potential for the evaluation of peripheral arterial occlusive disease.
本研究的目的是使用磁共振血管造影（MRA）和速度编码电影磁共振成像来评估患有闭塞性病变的外周动脉的形态和血流情况。
对9例外周动脉闭塞性疾病患者进行二维时间飞跃MRA和速度编码电影磁共振成像检查。MRA血管造影结果通过传统血管造影进行验证。
MRA显示了腘动脉的所有狭窄病变。MRA高估了动脉狭窄程度。显示了主要的侧支循环。速度编码电影磁共振成像提供了狭窄部位上下动脉的流速信息。狭窄部位上下的流速波形均为单相。狭窄部位下方动脉的收缩期峰值流速低于狭窄部位上方（p<0.05）。
MRA和速度编码电影磁共振成像相结合在评估外周动脉闭塞性疾病方面具有临床应用潜力。
