MR Diffusion Tensor Imaging in Optic Atrophy
- VernacularTitle:视神经萎缩的磁共振扩散张量成像研究
- Author:
Sihai WAN
;
Xinlan XIAO
;
Xuelin ZHANG
;
Huang PAN
- Publication Type:Journal Article
- Keywords:
magnetic resonance diffusion tensor imaging(MR-DTI);
optic atrophy;
fractional anisotropy(FA);
mean diffusivity(MD)
- From:
Journal of Practical Radiology
2000;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the MR diffusion tensor imaging(MR-DTI) feature of optic atrophy.Methods Diffusion tensor imaging data of optic nerve were acquired in twenty patients with optic atrophy and 20 healthy subjects.Results ①Atrophic optic nerves were thin obviously on MRI,and the signal of atrophic optic nerves decreased markedly on fractional anisotropy(FA) map and directionally encoded color(DEC) map.②The FA value(0.277?0.078) and ?∥ value(1.808?0.307) of atrophic optic nerves were declined obviously,and mean diffusivity(MD) value(1.442?0.264) and ?⊥ value(1.231?0.225) increased obviously in comparison to the normal optic nerves,there were statistically significant differences between the patients and the volunteers(P
