SIMULTANEOUS SPATIAL AND SPECTRAL SELECTIVE EXCITATION

被引：390

作者：

MEYER, CH

PAULY, JM

MACOVSKI, A

NISHIMURA, DG

机构：

[1] Information Systems Laboratory, Stanford University, Stanford, California

来源：

MAGNETIC RESONANCE IN MEDICINE | 1990年 / 15卷 / 02期

关键词：

D O I：

10.1002/mrm.1910150211

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：

Using a k‐space interpretation of small‐tip excitation, a single excitation pulse has been designed that is simultaneously selective in space and resonant frequency. An analytic expression for the response of this pulse has been derived. The pulse has been implemented on a 1.5‐T imaging system. The pulse has been applied to a rapid gradient‐echo imaging sequence that forms both water and fat images within a breath‐holding interval. These rapid images are free of the chemical shift artifacts at organ boundaries that typically afflict conventional rapid images. The pulse can be applied to a variety of other sequences, such as multislice water/fat sequences and rapid k‐space scanning. © 1990 Academic Press, Inc. Copyright © 1990 Wiley‐Liss, Inc., A Wiley Company

引用

页码：287 / 304

页数：18

共 26 条

[21]

SHINNAR M, 1988, 7TH P SOC MAGN RES M, P659

[22] THE K-TRAJECTORY FORMULATION OF THE NMR IMAGING PROCESS WITH APPLICATIONS IN ANALYSIS AND SYNTHESIS OF IMAGING METHODS [J].