Experimental Study on Dependence of Diffusion Tensor-derived Parameters upon Diffusion Time
- VernacularTitle:扩散张量成像导出量对扩散时间依赖关系的实验研究
- Author:
Huailing ZHANG
;
Yuan LI
;
Xiang WANG
;
Song GAO
- Publication Type:Journal Article
- Keywords:
diffusion time;
diffusion tensor imaging;
diffusion weighted imaging;
MRI
- From:Space Medicine & Medical Engineering
2006;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between diffusion time and diffusion tensor-derived parameters. Method Diffusion tensor data sets were obtained from 11 healthy volunteers using 8 different levels of diffusion time while keeping the diffusion sensitive gradient magnetic field strength fixed. Diffusion tensor-derived parameters with variant diffusion time for six regions of interest were calculated and compared. Result There was statistically significant difference in mean diffusivity (MD) of variant diffusion time (P0.05). Conclusion There is no diffusion time dependent in FA, but MD are diffusion time dependent. The reason may be attributed to the difference of the diffusion properties between the intra- and extra-cellular water molecules.
