波谱学杂志2016，Vol.33Issue(4)：528-538,11.DOI:10.11938/cjmr20160402
基于优化后流动敏感黑血序列的豆纹动脉3 T磁共振成像
Imaging Lenticulostriate Arteries at 3 Tesla Using Optimized Flow-Sensitive Black-Blood Technique
李律 1周赜辰 1苑纯 1郭华2
作者信息
- 1. 清华大学医学院生物医学工程系，生物医学影像研究中心，北京 100084
- 2. Department of Radiology，University of Washington，Seattle，WA98195-5502，USA
- 折叠
摘要
Abstract
Occlusion of lenticulostriate arteries (LSAs) often leads to lacunar infarction. Digital subtraction angiography (DSA) has high spatial resolution and superior definition of small vessels, and is the most widely used clinical routine to image LSAs. One drawback of DSA, however, is its invasiveness. Time-of-flight (TOF) magnetic resonance angiography (MRA) was recently shown to be able to image LSAs at ultra-high fields (i.e., 7 T) with specially-designed receiving coils. However, image LSAs with TOF-MRA on clinical MRI systems can be difficult due to the facts that blood flow in LSAs is slow and the luminal diameters in these vessels are small (i.e., 0.3~0.7 mm) relative to the dimension of imaging voxels. In this study, the flow-sensitive black-blood (FSBB) technique was optimized to image LSAs at 3 T to achieve a proper balance among spatial resolution, signal-to-noise ratio and scan time.关键词
磁共振成像(MRI)/磁共振血管造影(MRA)/豆纹动脉/流动敏感黑血(FSBB)技术/梯度优化Key words
MRI/magnetic resonance angiography (MRA)/lenticulostriate artery/flow- sensitive black-blood (FSBB) technique/gradient optimization分类
数理科学引用本文复制引用
李律,周赜辰,苑纯,郭华..基于优化后流动敏感黑血序列的豆纹动脉3 T磁共振成像[J].波谱学杂志,2016,33(4):528-538,11.
