利用二维相位对比和二维时间飞跃磁共振血管造影术评估锁骨下动脉窃血。
Evaluation of subclavian steal with two-dimensional phase-contrast and two-dimensional time-of-flight MR angiography.
作者信息
Drutman J, Gyorke A, Davis W L, Turski P A
机构信息
Department of Radiology, University of Utah Medical Center, Salt Lake City.
出版信息
AJNR Am J Neuroradiol. 1994 Oct;15(9):1642-5.
Abstract
We describe two MR angiographic methods of diagnosing subclavian steal in each of three patients. By using phase-directional information from a single two-dimensional phase-contrast sequence, we were able to show that the direction of flow in the affected vertebral artery was reversed. The same vertebral artery showed no signal on a 2-D time-of-flight sequence with a concatenated presaturation pulse applied above each section.
摘要
我们描述了对三名患者中的每一位进行锁骨下动脉盗血诊断的两种磁共振血管造影方法。通过使用来自单个二维相位对比序列的相位方向信息，我们能够显示出患侧椎动脉内血流方向发生了逆转。在每个层面上方施加串联预饱和脉冲的二维时间飞跃序列上，同一椎动脉未显示信号。
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