ANALYTICAL SOLUTION AND VERIFICATION OF DIFFUSION EFFECT IN SSFP

被引：30

作者：

CARNEY, CE ^{[1
]}

WONG, STS ^{[1
]}

PATZ, S ^{[1
]}

机构：

[1] MIT,RADIOL SCI PROGRAM,CAMBRIDGE,MA 02139

来源：

MAGNETIC RESONANCE IN MEDICINE | 1991年 / 19卷 / 02期

关键词：

D O I：

10.1002/mrm.1910190209

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：

Assuming that the SSFP magnetization response maintains a steady state which is penodic in the presence of diffusion, we can solve for the diffusion effect in such sequences. Formulating a Fourier series decomposition solution to the Bloch‐Torrey equation and imposing the steady‐state condition, analytical expressions describing the signal decay due to diffusion are developed. Magnetization responses for any system and sequence parameters can then be obtained. Also, sensitivity to b factor changes is quite different than standard diffusion measurement techniques. Assumptions made in the solution are verified via finite difference solutions and simulations of the Bloch‐Torrey equation. Copyright © 1991 Wiley‐Liss, Inc., A Wiley Company

引用

页码：240 / 246

页数：7

共 18 条

[1]

CARNEY C, 1990, 9TH P ANN M SOC MAGN, P386

[2] STEADY-STATE FREE PRECESSION IN NUCLEAR MAGNETIC RESONANCE [J].