CORRECTION OF MOTIONAL ARTIFACTS IN DIFFUSION-WEIGHTED MR-IMAGES USING NAVIGATOR ECHOES

被引：274

作者：

ORDIDGE, RJ

HELPERN, JA

QING, ZX

KNIGHT, RA

NAGESH, V

机构：

[1] NIH Center for Stroke Research, Department of Neurology, Henry Ford Health Sciences Center, Detroit

[2] Physics Department, Oakland University, Rochester, MI

来源：

MAGNETIC RESONANCE IMAGING | 1994年 / 12卷 / 03期

关键词：

DIFFUSION-WEIGHTED MRI; MOTION CORRECTION TECHNIQUE; MRI OF HUMAN HEAD;

D O I：

10.1016/0730-725X(94)92539-9

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：

Patient motion can seriously degrade the quality of diffusion-weighted MR images obtained using standard 2DFT imaging procedures. The main source of error arises from an MR signal phase-shift error which is proportional to the magnitude of the motion. A modified pulse sequence is proposed which uses the phase information from an additional spin echo to correct for patient motion. Application of this technique is demonstrated for a human brain study, which greatly improves the quantification of diffusion values from regions of brain tissue.

引用

页码：455 / 460

页数：6

共 11 条

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