Average diffusion coefficient (ADC) value, fractional anisotropy (FA) value and maps were calculated in the central portion and peripheral edema of the lesions.
构建表观扩散系数(adc)图和各向异性分数(fa)图，并测量病灶中心及周围水肿区的ADC、fa值。
Fractional anisotropy(FA) maps were processed using SPM2 to make voxel-wise comparison of anisotropy in whole brain between the two groups.
运用SPM2分析软件，采用基于体素的分析方法，比较首发抑郁症患者药物治疗前后全脑弥散各向异性分数（FA）值的差异及变化。
DTI measures assessed fractional anisotropy (FA) within a white matter skeleton.
使根据DTI测定结果，评估了白质骨架内各向异性分数(FA)。
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