Registry-Based Assessment of Shunt Operation Methods and Outcomes in Idiopathic Normal Pressure Hydrocephalus (RASHOMON Study): Protocol for a Multicenter Prospective Observational Cohort Study

Eriko Okumura   ^{1 *} , MD, PhD ;   Kazuhito Takeuchi   ^{1 *} , MD, PhD ;   Hiroyuki Momota   ² , MD, PhD ;   Tetsuya Nagatani   ³ , MD, PhD ;   Toshiaki Taoka   ⁴ , MD, PhD ;   Yuri Aimi   ³ , MD, PhD ;   Atsushi Hashizume   ⁵ , MD, PhD ;   Masaki Okazaki   ⁶ , MD, PhD ;   Ryuta Saito   ¹ , MD, PhD

¹ Department of Neurosurgery, Graduate School of Medicine, Nagoya University, Nagoya, Japan

² Department of Neurosurgery, National Center for Geriatrics and Gerontology, Obu, Japan

³ Department of Neurosurgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan

⁴ Department of Innovative Biomedical Visualization (iBMV), Graduate School of Medicine, Nagoya University, Nagoya, Japan

⁵ Department of Advanced Medicine, Department of Clinical Research Education, Nagoya University Hospital, Graduate School of Medicine, Nagoya University, Nagoya, Japan

⁶ Department of Nephrology, Graduate School of Medicine, Nagoya University, Nagoya, Japan

*these authors contributed equally