Tamami Tsuzuki, Marina Minami, Ryuhei Nagai, Hina Miyata, Kingo Nishiyama, Narufumi Suganuma, Nagamasa Maeda. Impact of COVID-19 infection on emergency obstetric and gynecological transport. World Academy of Sciences Journal. 2024. 6. 4
Satomi Morita, Ryuhei Nagai, Kazutoshi Hayashi. A rare case of pregnancy in a patient with Prune belly syndrome. Journal of Pediatric Surgery Case Reports. 2022. 80
Ryuhei Nagai, Yuichiro Takahashi, Shigenori Iwagaki, Rika Chiaki, Kazuhiko Asai, Masako Koike, Daisuke Katsura, Shunsuke Yasumi, Ichiro Kawabata. Transabdominal amnioinfusion: An evaluation of its adverse events. European journal of obstetrics, gynecology, and reproductive biology. 2022. 271. 132-137
Sumito Nagasaki, Masahiko Nakata, Mayumi Takano, Junya Sakuma, Ryuhei Nagai, Susumu Miyashita, Yuichiro Takahashi, Shigenori Iwagaki, Yuka Yamamoto, Mineto Morita. Measurement of fetal automated fractional shortening using two-dimensional tracking in multiple centers. Journal of medical ultrasonics (2001). 2021. 48. 1. 83-90
Daisuke Katsura, Yuichiro Takahashi, Shigenori Iwagaki, Rika Chiaki, Kazuhiko Asai, Masako Matsui, Ryuhei Nagai, Shunsuke Yasumi, Madoka Furuhashi, Takashi Murakami. Comparison of bilateral and unilateral umbilical artery diastolic blood flow abnormalities in monochorionic diamniotic twin pregnancies. The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians. 2020. 33. 17. 2933-2940
