Elimination of magnetic field foldover artifacts in MR images

被引：1
|
作者：
Larkman, DJ [1 ]
Herlihy, AH [1 ]
Coutts, GA [1 ]
Hajnal, JV [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Sch Med, Robert Steiner MRI Unit, Hammersmith Hosp, London W12 0HS, England
来源：
JOURNAL OF MAGNETIC RESONANCE IMAGING | 2000年 / 12卷 / 05期
关键词：
foldover artifact; cusp artifact; short bore;
D O I：
10.1002/1522-2586(200011)12:5<795::AID-JMRI20>3.0.CO;2-H
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：
Foldover artifacts arise when the same imaging frequency occurs both at a desired location within a slice and at another location within the sensitive region of the radiofrequency (RF) coil. Foldover artifacts can be caused by nonlinearity in the gradient system and by inhomogeneity in Bo. This study investigates an approach in which an extra RF receiver coil and a postprocessing method are used to identify and remove foldover artifacts. (C) 2000 Wiley-Liss, Inc.
引用
收藏
页码：795 / 797
页数：3
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