PHASE-CORRECTION METHOD FOR REDUCTION OF BO INSTABILITY ARTIFACTS

被引：3

作者：

FOO, TKF

HAYES, CE

机构：

[1] Applied Science Laboratory, GE Medical Systems, Waukesha, Wisconsin, 53188

[2] Department of Radiology, University of Washington School of Medicine, Seattle

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1993年 / 3卷 / 04期

关键词：

ARTIFACT; IMAGE PROCESSING; MATHEMATICAL MODEL; PHASE CORRECTION; QUALITY ASSURANCE;

D O I：

10.1002/jmri.1880030420

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：

View-to-view phase shifts due to B0 instability are corrected by applying a phase correction to the low-spatial-frequency views. The algorithm described herein assumes that the signal intensity in the space outside of an object represents only noise. A set of phases for the low-spatial-frequency views are calculated by minimizing, in the image, the intensity of the induced artifacts in the space outside of the object.

引用

页码：676 / 681

页数：6

共 16 条

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