Koichiro Mandai

445 total citations
52 papers, 283 citations indexed

About

Koichiro Mandai is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Koichiro Mandai has authored 52 papers receiving a total of 283 indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Surgery, 42 papers in Pulmonary and Respiratory Medicine and 27 papers in Oncology. Recurrent topics in Koichiro Mandai's work include Gallbladder and Bile Duct Disorders (33 papers), Pancreatic and Hepatic Oncology Research (22 papers) and Esophageal and GI Pathology (22 papers). Koichiro Mandai is often cited by papers focused on Gallbladder and Bile Duct Disorders (33 papers), Pancreatic and Hepatic Oncology Research (22 papers) and Esophageal and GI Pathology (22 papers). Koichiro Mandai collaborates with scholars based in Japan, Greece and Germany. Koichiro Mandai's co-authors include Kenjiro Yasuda, Koji Uno, Takuji Kawamura, Kiyohito Tanaka, Yuki Ueda, Atsuhiro Morita, Kenichi Nishioji, Masao Kobayashi, Hiroaki Sakai and Tomoya Ogawa and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and World Journal of Gastroenterology.

In The Last Decade

Koichiro Mandai

44 papers receiving 276 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Koichiro Mandai Japan 9 233 219 157 46 15 52 283
Kengo Onochi Japan 10 221 0.9× 186 0.8× 103 0.7× 41 0.9× 17 1.1× 23 273
Frederick Dy Singapore 6 176 0.8× 143 0.7× 147 0.9× 25 0.5× 17 1.1× 12 215
Takao Nishikawa Japan 11 286 1.2× 272 1.2× 168 1.1× 15 0.3× 16 1.1× 23 314
Mamoru Shimada Japan 8 273 1.2× 88 0.4× 232 1.5× 45 1.0× 7 0.5× 14 311
Chiara Coluccio Italy 10 143 0.6× 116 0.5× 96 0.6× 28 0.6× 31 2.1× 43 219
Ammara Khalid United States 6 291 1.2× 161 0.7× 220 1.4× 17 0.4× 18 1.2× 15 323
Christina Tofani United States 5 161 0.7× 233 1.1× 243 1.5× 27 0.6× 16 1.1× 33 314
M Calgaro Italy 5 180 0.8× 252 1.2× 63 0.4× 128 2.8× 10 0.7× 7 320
Hidefumi Nishikiori Japan 10 231 1.0× 267 1.2× 235 1.5× 8 0.2× 11 0.7× 24 305
M. Freeman United States 5 239 1.0× 193 0.9× 135 0.9× 18 0.4× 20 1.3× 11 259

Countries citing papers authored by Koichiro Mandai

Since Specialization
Citations

This map shows the geographic impact of Koichiro Mandai's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koichiro Mandai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichiro Mandai more than expected).

Fields of papers citing papers by Koichiro Mandai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichiro Mandai. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koichiro Mandai. The network helps show where Koichiro Mandai may publish in the future.

Co-authorship network of co-authors of Koichiro Mandai

This figure shows the co-authorship network connecting the top 25 collaborators of Koichiro Mandai. A scholar is included among the top collaborators of Koichiro Mandai based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Koichiro Mandai. Koichiro Mandai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Mandai, Koichiro, et al.. (2025). Clinical Predictors of Worsening in Non-severe Acute Cholangitis. Internal Medicine.
2.
Mandai, Koichiro & Shiho Nakamura. (2024). Securing threads with a novel clip to prevent preceding stent migration in multiple biliary inside plastic stents. Digestive Endoscopy. 36(4). 508–509. 1 indexed citations
3.
Mandai, Koichiro, et al.. (2023). Successful troubleshooting for “stone-basket impaction” using argon plasma coagulation and a novel device delivery system. Endoscopy. 55(S 01). E957–E958. 1 indexed citations
4.
Mandai, Koichiro, et al.. (2023). Cystic duct straightening using a fine‐gauge balloon dilator for successful endoscopic transpapillary gallbladder stenting. Journal of Hepato-Biliary-Pancreatic Sciences. 30(9). e62–e63. 1 indexed citations
5.
Mandai, Koichiro & Tomoya Ogawa. (2023). Use of a novel clip-band device for difficult biliary cannulation due to papillary edema after precutting. Endoscopy. 55(S 01). E975–E976. 1 indexed citations
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Mandai, Koichiro, Takayoshi Tsuchiya, Hiroshi Kawakami, et al.. (2021). Fully covered metal stents vs plastic stents for preoperative biliary drainage in patients with resectable pancreatic cancer without neoadjuvant chemotherapy: A multicenter, prospective, randomized controlled trial. Journal of Hepato-Biliary-Pancreatic Sciences. 29(11). 1185–1194. 10 indexed citations
10.
Inoue, Naonori, et al.. (2021). Cancer of Unknown Primary With Presumptive Pancreatic Cancer Treated With FOLFIRINOX. Journal of Medical Cases. 12(11). 442–445. 1 indexed citations
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Mandai, Koichiro, Koji Uno, & Kenjiro Yasuda. (2020). Efficacy and Safety of Short-type Single Balloon Enteroscopy-assisted Peroral Direct Cholangioscopy Using an Ultra-slim Endoscope in Patients With Surgically Altered Anatomy. Surgical Laparoscopy Endoscopy & Percutaneous Techniques. 30(4). 327–331. 1 indexed citations
13.
Mandai, Koichiro, et al.. (2019). Association between hyperechogenic pancreas and pancreatic ductal adenocarcinoma concomitant with intraductal papillary mucinous neoplasms. Journal of Medical Ultrasonics. 46(4). 435–439. 9 indexed citations
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Mandai, Koichiro, et al.. (2018). Outcomes of a Physician-Controlled Wire-Guided Cannulation of the Bile Duct Using a Novel Sphincterotome: A Single-Center, Prospective Study. Gastroenterology Research. 11(1). 36–40. 4 indexed citations
16.
Kawamura, Takuji, Hiroaki Sakai, Tomoya Ogawa, et al.. (2018). Feasibility of Underwater Endoscopic Mucosal Resection for Colorectal Lesions: A Single Center Study in Japan. Gastroenterology Research. 11(4). 274–279. 30 indexed citations
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Mandai, Koichiro, et al.. (2016). Endoscopic ultrasound-guided hepaticogastrostomy using a 6-F cystotome and 12-cm covered metal stent. SHILAP Revista de lepidopterología. 4(3). E287–E291. 5 indexed citations
19.
Mandai, Koichiro, et al.. (2015). Endoscopic ultrasonography in the diagnosis and treatment of a gastric wall abscess. Journal of Medical Ultrasonics. 43(1). 119–123. 4 indexed citations
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Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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