Department;
of;
Radiology;
Xuanwu;
Hospital;
Capital;
Medical;
University;
Beijing;
100053;
China;
Key;
Laboratory;
of;
Ministry;
of;
Education;
on;
Neurodegenerative;
Diseases;
Xuanwu;
Hospital;
Capital;
Medical;
University;
Beijing;
100053;
China;