1. Department of Neurosurgery, The Jikei University School of Medicine, Tokyo, Japan;
2. Department of Neuroendovascular Therapy and Neurosurgery, Juntendo University Faculty of Medicine, Tokyo, Japan;
3. Department of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan;
4. Department of Endovascular surgery, Tokyo Medical and Dental University, Tokyo, Japan;
5. Department of Mechanical Engineering, Tokyo University of Science, Tokyo, Japan;
6. Division of Innovation for Medical Information Technology, Jikei University School of Medicine, Tokyo, Japan