Department of Radiology. First Affiliated Hospital;
Dalian Medical University;
Dalian 116011;
Liaoning Province;
China;
Department of MedicaFimaging;
Second Affiliatecl Hospital;
Medical College;
Shantou University;
Shantou 515041;
Guangdong Province;
China;
Devision of Neurophysiology;
Dalian Medical University;
Dalian 116023;
Liaoning Province;
China;