Subclavian MR arteriography: Reduction of susceptibility artifact with short echo time and dilute gadopentetate dimeglumine

被引:27
作者
Neimatallah, MA
Chenevert, TL
Carlos, RC
Londy, FJ
Dong, Q
Prince, MR
Kim, HM
机构
[1] Cornell Univ, Weill Med Coll, Dept Radiol, Cornell MRI, New York, NY 10022 USA
[2] Univ Michigan, Dept Radiol, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Dept Biostat, Ann Arbor, MI 48109 USA
关键词
arteries; MR; subclavian; magnetic resonance (MR); artifact; vascular studies; veins;
D O I
10.1148/radiology.217.2.r00oc37581
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
At arterial phase gadolinium-enhanced magnetic resonance (MR) angiography, artifactual stenosis of the subclavian artery is sometimes seen adjacent to the subclavian vein on the side of the contrast material injection. Experiments in phantoms and in 19 patients showed increased artifact with longer echo time and higher concentration of injected contrast material. An effective method to substantially decrease this susceptibility artifact was threefold dilution of gadopentetate dimeglumine and use of a short echo time (1 msec).
引用
收藏
页码:581 / 586
页数:6
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