Quinn S F, Demlow T A, Hallin R W, Eidemiller L R, Szumowski J
Department of Radiology, Good Samaritan Hospital, Portland, OR 97210.
Radiology. 1993 Oct;189(1):181-4. doi: 10.1148/radiology.189.1.8372190.
To develop a bilateral femoral magnetic resonance (MR) angiographic examination that would include the aortic bifurcation to the ankle.
Thirty-seven patients underwent conventional angiography and the bilateral femoral MR angiographic examination. Two-dimensional time-of-flight angiography was used for all studies.
The femoral MR angiogram could have replaced the conventional angiogram in 57% of patients (21 of 37). In 43% of patients (16 of 37), the femoral MR angiogram could not have replaced the conventional angiogram. Reasons for diagnostic failure with femoral MR angiography included artifact from vascular clips (n = 8) or prosthetic joints (n = 3), overlooked distal aortic stenosis (n = 1), and suboptimal definition of vessels (usually trifurcation vessels) owing to various causes (n = 8). Seven of the patients in this group had bypass grafts.
Some of the current limitations of femoral MR angiography could be avoided by supplemental duplex sonography around prostheses and vascular clips. The other limitations will require advances in MR imaging techniques.
开展一项双侧股动脉磁共振（MR）血管造影检查，该检查应涵盖从主动脉分叉至踝关节的区域。
37例患者接受了传统血管造影及双侧股动脉MR血管造影检查。所有研究均采用二维时间飞跃血管造影。
在57%的患者（37例中的21例）中，股动脉MR血管造影本可替代传统血管造影。在43%的患者（37例中的16例）中，股动脉MR血管造影无法替代传统血管造影。股动脉MR血管造影诊断失败的原因包括血管夹（n = 8）或人工关节（n = 3）造成的伪影、漏诊的远端主动脉狭窄（n = 1）以及由于各种原因导致的血管（通常是三叉血管）清晰度欠佳（n = 8）。该组中有7例患者有搭桥移植物。
通过在假体和血管夹周围补充双功超声检查，可避免目前股动脉MR血管造影的一些局限性。其他局限性将需要MR成像技术的进步。
