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A method to reduce systematic spatial shift associated with magnetic resonance imaging
被引：4
作者：
Taha, JM
Lamba, MA
Samaratunga, C
Breneman, JC
Warnick, RE
机构：
[1] UNIV CINCINNATI,COLL MED,DEPT RADIAT ONCOL,CINCINNATI,OH 45267
[2] MAYFIELD CLIN,CINCINNATI,OH
关键词：
chemical shift;
magnetic resonance imaging;
spatial shift;
D O I：
10.1159/000099678
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
To reduce the chemical shifts during magnetic resonance (MR) imaging, the authors replaced the petroleum gel in the Brown-Roberts-Well (BRW) MR localizer with chromium chloride. Computed tomography and MR scans were obtained of a phantom skull containing objects with known spatial coordinates, A 2- to 3-mm systematic spatial shift in the frequency-encoded direction was observed with petroleum gel, but not with CrCl3. Results were verified by reconstructing the three-dimensional spatial location of each object using X-Knife computer software. The authors conclude that spatial localization is more accurate with a CrCl3-filled than a petroleum-filled BRW-MR localizer.
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页码：118 / 122
页数：5
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