Kazumasa Nagai

Publication Activity (10 Years)

Years Active: 2020-2024
Publications (10 Years): 22

Top Topics

Positive Airway Pressure

Cross Sectional

Endoscopic Submucosal Dissection

Fine Needle Aspiration

Top Venues

Journal of hepato-biliary-pancreatic sciences

This page only lists publications with an associated author ORCID identifier.

Publications

Kazumasa Nagai, Maki Sugimoto, Takasyoshi Tsuchiya, Ryosuke Tonozuka, Shuntaro Mukai, Kenjiro Yamamoto, Takao Itoi
Intraprocedural hologram support with mixed-reality technique in endoscopic ultrasound-guided biliary drainage. Endoscopy 56 (S 01) (2024)
Kento Shionoya, Ryosuke Tonozuka, Shuntaro Mukai, Takayoshi Tsuchiya, Reina Tanaka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Takao Itoi
Endoscopic ultrasound-guided biopsy using a three-prong asymmetry tip needle for pancreatic tumors and peridigestive tract lesions: Retrospective single-center study. Journal of hepato-biliary-pancreatic sciences (2024)
Kazumasa Nagai, Maki Sugimoto, Takasyoshi Tsuchiya, Ryosuke Tonozuka, Shuntaro Mukai, Kenjiro Yamamoto, Takao Itoi
Intraprocedural hologram support with mixed-reality technique in endoscopic ultrasound-guided biliary drainage. Endoscopy 56 (S 01) (2024)
Shuntaro Mukai, Takao Itoi, Takayoshi Tsuchiya, Reina Tanaka, Ryosuke Tonozuka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Atsushi Sofuni
One-step tract dilation using a novel long balloon catheter during endoscopic ultrasound-guided hepaticogastrostomy. Journal of hepato-biliary-pancreatic sciences (2024)
Kento Shionoya, Ryosuke Tonozuka, Shuntaro Mukai, Takayoshi Tsuchiya, Reina Tanaka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Takao Itoi
Endoscopic ultrasound-guided biopsy using a three-prong asymmetry tip needle for pancreatic tumors and peridigestive tract lesions: Retrospective single-center study. Journal of hepato-biliary-pancreatic sciences 31 (4) (2024)
Shuntaro Mukai, Takao Itoi, Takayoshi Tsuchiya, Reina Tanaka, Ryosuke Tonozuka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Atsushi Sofuni
A novel technique for one-step dilation followed by bile aspiration using an ultra-tapered bougie dilator with side holes to minimize bile leakage during EUS-guided hepaticogastrostomy. Journal of hepato-biliary-pancreatic sciences 31 (5) (2024)
Kenjiro Yamamoto, Takao Itoi, Akio Katanuma, Tatsuya Ishii, Eisuke Iwasaki, Shintaro Kawasaki, Takayoshi Tsuchiya, Ryosuke Tonozuka, Kazumasa Nagai, Shuntaro Mukai
Multicenter comparative study on the usefulness of the optimal electrosurgical unit setting in endoscopic papillectomy for ampullary neoplasms (with video). Journal of hepato-biliary-pancreatic sciences 31 (7) (2024)
Kenjiro Yamamoto, Takao Itoi, Akio Katanuma, Tatsuya Ishii, Eisuke Iwasaki, Shintaro Kawasaki, Takayoshi Tsuchiya, Ryosuke Tonozuka, Kazumasa Nagai, Shuntaro Mukai
Multicenter comparative study on the usefulness of the optimal electrosurgical unit setting in endoscopic papillectomy for ampullary neoplasms (with video). Journal of hepato-biliary-pancreatic sciences 31 (7) (2024)
Shuntaro Mukai, Takao Itoi, Takayoshi Tsuchiya, Reina Tanaka, Ryosuke Tonozuka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Atsushi Sofuni
One-step tract dilation using a novel long balloon catheter during endoscopic ultrasound-guided hepaticogastrostomy. Journal of hepato-biliary-pancreatic sciences 31 (7) (2024)
Shuntaro Mukai, Takao Itoi, Takayoshi Tsuchiya, Reina Tanaka, Ryosuke Tonozuka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Atsushi Sofuni
A novel technique for one-step dilation followed by bile aspiration using an ultra-tapered bougie dilator with side holes to minimize bile leakage during EUS-guided hepaticogastrostomy. Journal of hepato-biliary-pancreatic sciences (2024)
Shuntaro Mukai, Takao Itoi, Takayoshi Tsuchiya, Reina Tanaka, Ryosuke Tonozuka, Kenjiro Yamamoto, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Atsushi Sofuni
One-step tract dilation using a novel long balloon catheter during endoscopic ultrasound-guided hepaticogastrostomy. Journal of hepato-biliary-pancreatic sciences 31 (7) (2024)
Kenjiro Yamamoto, Takao Itoi, Akio Katanuma, Tatsuya Ishii, Eisuke Iwasaki, Shintaro Kawasaki, Takayoshi Tsuchiya, Ryosuke Tonozuka, Kazumasa Nagai, Shuntaro Mukai
Multicenter comparative study on the usefulness of the optimal electrosurgical unit setting in endoscopic papillectomy for ampullary neoplasms (with video). Journal of hepato-biliary-pancreatic sciences (2024)
Kazumasa Nagai, Maki Sugimoto, Takasyoshi Tsuchiya, Ryosuke Tonozuka, Shuntaro Mukai, Kenjiro Yamamoto, Takao Itoi
Intraprocedural hologram support with mixed-reality technique in endoscopic ultrasound-guided biliary drainage. Endoscopy 56 (S 01) (2024)
Kenjiro Yamamoto, Takayoshi Tsuchiya, Reina Tanaka, Ryosuke Tonozuka, Shuntaro Mukai, Kazumasa Nagai, Yukitoshi Matsunami, Hiroyuki Kojima, Hirohito Minami, Takao Itoi
Endoscopic retrieval of a proximally migrated fully covered self-expandable metal stent using biopsy forceps with a guiding sheath cannula. Journal of hepato-biliary-pancreatic sciences (2023)
Ryosuke Tonozuka, Kazumasa Nagai, Takayoshi Tsuchiya, Reina Tanaka, Shuntaro Mukai, Kenjiro Yamamoto, Hirohito Minami, Yukitoshi Matsunami, Hiroyuki Kojima, Takao Itoi
Potential versatile uses of a novel ultra-thin peroral cholangioscope. Journal of hepato-biliary-pancreatic sciences (2023)
Ryosuke Tonozuka, Takao Itoi, Kazumasa Nagai, Atsushi Sofuni, Takayoshi Tsuchiya, Kentaro Ishii, Reina Tanaka, Shuntaro Mukai, Hirohito Minami, Kenjiro Yamamoto
A novel peroral digital cholangioscope with a large accessory channel: An experimental study. Journal of hepato-biliary-pancreatic sciences (2022)
Kazumasa Nagai, Takao Itoi, Shuntaro Mukai, Takayoshi Tsuchiya, Kentaro Ishii, Ryosuke Tonozuka, Yukitoshi Matsunami, Ryosuke Nakatsubo, Eri Joyama, Atsushi Sofuni
A novel tube placement technique in EUS-guided drainage for small pancreatic pseudocyst: Spinning lasso method. Journal of hepato-biliary-pancreatic sciences (2022)
Kazumasa Nagai, Takao Itoi, Shuntaro Mukai, Takayoshi Tsuchiya, Kentaro Ishii, Ryosuke Tonozuka, Yukitoshi Matsunami, Ryosuke Nakatsubo, Eri Joyama, Atsushi Sofuni
Single-session endoscopic ultrasound-guided hepaticogastrostomy and pancreatic duct drainage for concomitant biliary and pancreatic duct stones in a patient with a surgically altered anatomy. Journal of hepato-biliary-pancreatic sciences 29 (6) (2022)
Daisuke Nutahara, Kazumasa Nagai, Atsushi Sofuni, Takayoshi Tsuchiya, Kentaro Ishii, Yoshihiro Furuichi, Katsuya Kitamura, Masahiro Itoh, Hideaki Miyazawa, Takao Itoi
Morphological study of the gastrointestinal tract around the ligament of Treitz using upper gastrointestinal radiography: Fundamental data for EUS-guided gastrojejunostomy. Journal of hepato-biliary-pancreatic sciences 28 (11) (2021)
Kenjiro Yamamoto, Takao Itoi, Eisuke Iwasaki, Takayoshi Tsuchiya, Kentaro Ishii, Ryosuke Tonozuka, Shuntaro Mukai, Kazumasa Nagai, Yuko Kitagawa
Endoscopic papillectomy for tumors of the minor duodenal papilla: A case series of six patients and literature review. Journal of hepato-biliary-pancreatic sciences (2021)
Takayoshi Tsuchiya, Takao Itoi, Kentaro Ishii, Ryosuke Tonozuka, Shuntaro Mukai, Kazumasa Nagai, Kenjiro Yamamoto, Toshihiro Honma, Hirohito Minami, Yutaka Saito
Impact of using scope holder on Interventional Endoscopy (with video). Journal of hepato-biliary-pancreatic sciences (2021)
Toshifumi Kin, Kazumasa Nagai, Tsuyoshi Hayashi, Kuniyuki Takahashi, Akio Katanuma
Efficacy of superb microvascular imaging of ultrasound for diagnosis of gallbladder lesion. Journal of hepato-biliary-pancreatic sciences 27 (12) (2020)