Three-dimensional Electrocardiographically Gated Variable Flip Angle FSE Imaging for MR Angiography of the Hands at 3.0 T: Initial Experience
Three-dimensional Electrocardiographically Gated Variable Flip Angle FSE Imaging for MR Angiography of the Hands at 3.0 T: Initial Experience
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DOI：
10.1148/radiol.2531090290
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发表时间：
2009-09-01
期刊：
影响因子：
19.7
通讯作者：
Lee, Vivian S.
中科院分区：
文献类型：
--
作者：
Lim, Ruth P.;Storey, Pippa;Lee, Vivian S.
在获得机构审查委员会批准和知情同意后，对13名受试者的三维心电图门控可变翻转角（VFA）快速自旋回波磁共振（MR）血管造影技术进行了评价，作为手部动脉成像的非增强方法（包括4名患者）;这包括7名受试者在加热和冷却条件下的血管可视化评价。评价检查的图像质量和血管清晰度。所有受试者均实现了动脉与静脉的清晰分离，血管清晰度和狭窄描述极佳。加温改善了健康志愿者的血管可视化。VFA MR血管造影是一种高空间分辨率技术，能够评估血管对温度挑战的反应性。
After institutional review board approval and informed consent were obtained for this HIPAA-compliant investigation, a three-dimensional electrocardiographically gated variable flip angle (VFA) fast spin-echo magnetic resonance (MR) angiography technique was evaluated as an unenhanced method for imaging hand arteries in 13 subjects ( including four patients) at 3.0 T; this included evaluation of vessel visualization with warming and cooling in seven subjects. Examinations were evaluated for image quality and vessel conspicuity. Clear separation of arteries from veins was achieved in all subjects, with excellent vessel conspicuity and depiction of stenoses. Warming improved vessel visualization in healthy volunteers. VFA MR angiography is a high-spatial-resolution technique that enables the assessment of vascular reactivity in response to temperature challenge.