In vivo diffusion characteristics of rat spinal cord

被引：37

作者：

Fenyes, DA ^{[1
]}

Narayana, PA ^{[1
]}

机构：

[1] Univ Texas, Sch Med, Dept Radiol, Houston, TX 77030 USA

来源：

MAGNETIC RESONANCE IMAGING | 1999年 / 17卷 / 05期

关键词：

spinal cord; diffusion tensor;

D O I：

10.1016/S0730-725X(98)00220-3

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：

Complete apparent diffusion tensor (ADTs) of spinal cord was measured in vivo in nine rats at 2.0 T, Two rotationally invariant parameters, the trace, which is a measure of the mean diffusivity, and the lattice index (LI), which reflects the degree of orientation coherence of tissue, have been estimated from the ADT, The mean white matter (WM) trace value (3.05 +/- 0.26 mm(2)/sec) was found to be substantially higher than the gray matter (GM) trace (2.36 +/- 0.39 mm(2)/sec), in contrast with the published results on fixed, excised cord, Statistically significant anisotropic diffusion was observed in both WM and GM, with greater anisotropy in the WM (LI = 0.67 +/- 0.06) than in the GM (LI = 0.51 +/- 0.05), (C) 1999 Elsevier Science Inc.

引用

页码：717 / 722

页数：6

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