Department of Radiology;
Beijing Tiantan Hospital;
Capital Medical University;
Beijing;
China;
Capital Medical University;
Beijing;
China;
Beijing Neurosurgical Insititute;
Beijing;
China;
Department of Neurology;
Beijing Tiantan Hospital;
Capital Medical University;
Beijing;
China;
Alzheimer; Disease; Diffusion; Tensor; Imaging; Fractional; Anisotropy; TBSS;