Caputo G R, Higgins C B
Department of Radiology, University of California Medical Center, San Francisco 94143.
Invest Radiol. 1992 Dec;27 Suppl 2:S97-102. doi: 10.1097/00004424-199212002-00017.
Peripheral vascular disease has been evaluated using conventional imaging techniques such as contrast angiography to demonstrate the morphology and duplex sonography to evaluate the hemodynamic significance of a stenosis. Two-dimensional time-of-flight (TOF) magnetic resonance angiography (MRA) provides useful anatomic information in both normal and diseased popliteal and tibioperoneal vascular segments, whereas corresponding velocity-encoded cine MR determined velocities and waveforms correlate well with those determined using color-coded sonography and showed excellent interstudy reproducibility. Velocity-encoded cine MR may be useful in assessing the hemodynamic significance of a peripheral vascular stenosis whose severity might be overestimated by using MRA alone. When two-dimensional TOF MRA is combined in a complementary manner with velocity-encoded cine MR, the anatomic information from contrast angiography and the physiologic information from duplex sonography can be obtained during the course of one MR examination.
外周血管疾病已通过传统成像技术进行评估，如使用造影血管造影来显示形态，以及使用双功超声来评估狭窄的血流动力学意义。二维时间飞跃（TOF）磁共振血管造影（MRA）在正常和病变的腘窝及胫腓血管段均能提供有用的解剖信息，而相应的速度编码电影磁共振测定的速度和波形与使用彩色编码超声测定的结果相关性良好，且在不同研究间具有出色的可重复性。速度编码电影磁共振可能有助于评估外周血管狭窄的血流动力学意义，单独使用MRA时其严重程度可能会被高估。当二维TOF MRA与速度编码电影磁共振以互补方式结合时，在一次磁共振检查过程中即可获得来自造影血管造影的解剖信息和来自双功超声的生理信息。
