1. Biomedical MR Science Center, Shiga University of Medical Science, Ohtsu, Shiga, Japan
2. Center of Neurological and Cerebrovascular Diseases, Takeda Hospital, Shimogyo-ku, Kyoto, Japan
3. Department of Radiology, Shiga University of Medical Science, Ohtsu, Shiga, Japan
4. Department of Neurosurgery, Shiga University of Medical Science, Ohtsu, Shiga, Japan
5. Department of Fundamental Nursing, Shiga University of Medical Science, Ohtsu, Shiga, Japan