1. Department of Neuroendovascular Therapy, Kohnan Hospital, Sendai, Miyagi, Japan
2. Department of Neurosurgery, Kohnan Hospital, Sendai, Miyagi, Japan
3. Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
4. Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Miyagi, Japan
5. Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan