Improvement of spiral MRI with the measured k-space trajectory

被引：12

作者：

Ding, XP

Tkach, J

Ruggieri, P

Perl, J

Masaryk, T

机构：

[1] Department of Diagnostic Radiology, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1997年 / 7卷 / 05期

关键词：

spiral MRI; k-space trajectory correction;

D O I：

10.1002/jmri.1880070525

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：

The k-space trajectory of a spiral imaging sequence was measured with a self-encoding technique, The image quality improved dramatically when reconstructed with the measured k-space trajectory, There were substantial artifacts in images reconstructed with the derived k-space trajectory under the assumption of gradient system linearity. The results indicated the nonlinearity of the gradient system and the effectiveness of the correction technique.

引用

页码：938 / 940

页数：3

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