Tomohiko Moriyama

1.7k total citations
68 papers, 1.0k citations indexed

About

Tomohiko Moriyama is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, Tomohiko Moriyama has authored 68 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Surgery, 24 papers in Pulmonary and Respiratory Medicine and 18 papers in Gastroenterology. Recurrent topics in Tomohiko Moriyama's work include Gastric Cancer Management and Outcomes (19 papers), Helicobacter pylori-related gastroenterology studies (14 papers) and Inflammatory Bowel Disease (13 papers). Tomohiko Moriyama is often cited by papers focused on Gastric Cancer Management and Outcomes (19 papers), Helicobacter pylori-related gastroenterology studies (14 papers) and Inflammatory Bowel Disease (13 papers). Tomohiko Moriyama collaborates with scholars based in Japan, Thailand and Malaysia. Tomohiko Moriyama's co-authors include Takayuki Matsumoto, Shotaro Nakamura, Mitsuo Iida, Motohiro Esaki, Yuta Fuyuno, Minako Hirahashi, Mitsuru Esaki, Takanari Kitazono, Junji Umeno and Takehiro Torisu and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and American Journal of Roentgenology.

In The Last Decade

Tomohiko Moriyama

61 papers receiving 974 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Tomohiko Moriyama Japan 16 606 401 338 177 156 68 1.0k
Shuichi Terao Japan 11 1.2k 2.0× 841 2.1× 379 1.1× 102 0.6× 120 0.8× 22 1.4k
Hirotsugu Sakamoto Japan 22 761 1.3× 691 1.7× 596 1.8× 337 1.9× 141 0.9× 83 1.4k
Kaoru Takabayashi Japan 15 390 0.6× 352 0.9× 297 0.9× 203 1.1× 144 0.9× 99 773
Wai‐Man Wong Hong Kong 14 357 0.6× 197 0.5× 159 0.5× 215 1.2× 72 0.5× 25 972
J C Delchier France 16 454 0.7× 166 0.4× 224 0.7× 117 0.7× 121 0.8× 26 756
W Dekker Netherlands 19 1.0k 1.7× 574 1.4× 494 1.5× 111 0.6× 141 0.9× 47 1.4k
Jianfeng Yang China 14 260 0.4× 166 0.4× 166 0.5× 167 0.9× 111 0.7× 57 725
Pin Jin Hu China 17 522 0.9× 229 0.6× 237 0.7× 46 0.3× 81 0.5× 45 826
Hwoon Yong Jung South Korea 13 450 0.7× 274 0.7× 115 0.3× 142 0.8× 34 0.2× 29 671
Juan Carlos Bravo Colombia 17 780 1.3× 404 1.0× 121 0.4× 208 1.2× 44 0.3× 52 1.1k

Countries citing papers authored by Tomohiko Moriyama

Since Specialization
Citations

This map shows the geographic impact of Tomohiko Moriyama'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 Tomohiko Moriyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Tomohiko Moriyama more than expected).

Fields of papers citing papers by Tomohiko Moriyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Tomohiko Moriyama. 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 Tomohiko Moriyama. The network helps show where Tomohiko Moriyama may publish in the future.

Co-authorship network of co-authors of Tomohiko Moriyama

This figure shows the co-authorship network connecting the top 25 collaborators of Tomohiko Moriyama. A scholar is included among the top collaborators of Tomohiko Moriyama 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 Tomohiko Moriyama. Tomohiko Moriyama 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.
2.
Kawasaki, Keisuke, Shin Fujioka, Yuta Fuyuno, et al.. (2023). Small bowel capsule endoscopy examination and open access database with artificial intelligence: The SEE‐artificial intelligence project. SHILAP Revista de lepidopterología. 4(1). e258–e258. 11 indexed citations
3.
Yoshida, Yuichiro, Shin Fujioka, Tomohiko Moriyama, et al.. (2023). Disease Flares Following COVID-19 Vaccination in Patients with Inflammatory Bowel Disease. Internal Medicine. 62(24). 3579–3584. 2 indexed citations
4.
Kawasaki, Keisuke, Takehiro Torisu, Motohiro Esaki, et al.. (2023). Continuous use of antithrombotic medications during peri‐endoscopic submucosal dissection period for colorectal lesions: A propensity score matched study. Journal of Gastroenterology and Hepatology. 38(6). 955–961.
5.
Hirano, Atsushi, Takehiro Torisu, Junji Umeno, et al.. (2022). The Compositional Structure of the Small Intestinal Microbial Community via Balloon-Assisted Enteroscopy. Digestion. 103(4). 308–318. 7 indexed citations
6.
Kudo, K., et al.. (2021). Barriers to International Telemedicine Conferencing: A Survey of the National University Hospital Council of Japan. Telemedicine Journal and e-Health. 28(3). 433–439. 2 indexed citations
7.
Shimizu, Shuji, K. Kudo, Shintaro Ueda, et al.. (2020). Remote Medical Education in Indonesia: Analysis of 10 Years of Activities. 8.
8.
Shindo, Koji, Kenoki Ohuchida, Taiki Moriyama, et al.. (2020). Influence of endoscopic resection on additional laparoscopic distal gastrectomy: a propensity score-matching analysis. Surgery Today. 50(10). 1290–1296. 5 indexed citations
9.
Harada, Akira, Koichi Kurahara, Tomohiko Moriyama, et al.. (2019). Risk factors for reflux esophagitis after eradication of Helicobacter pylori. Scandinavian Journal of Gastroenterology. 54(10). 1183–1188. 3 indexed citations
10.
Harada, Akira, Takehiro Torisu, Yasuharu Okamoto, et al.. (2019). Predictive Factors for Rebleeding after Negative Capsule Endoscopy among Patients with Overt Obscure Gastrointestinal Bleeding. Digestion. 101(2). 129–136. 5 indexed citations
11.
Shimizu, Shuji, K. Kudo, Tomohiko Moriyama, et al.. (2018). International Telemedicine Activities in Thailand. SHILAP Revista de lepidopterología. 3 indexed citations
12.
Nagata, Yutaka, Motohiro Esaki, Tomohiko Moriyama, et al.. (2018). Anti-tumor necrosis factor therapy decreases the risk of initial intestinal surgery after diagnosis of Crohn’s disease of inflammatory type. Journal of Gastroenterology. 54(4). 330–338. 6 indexed citations
13.
Asano, Kouichi, Motohiro Esaki, Junji Umeno, et al.. (2015). Contribution of susceptibility variants at FCGR2A and 13q12 to the risk of relapse among Japanese patients with ulcerative colitis. Journal of Gastroenterology. 50(11). 1094–1102. 4 indexed citations
14.
Nagata, Yutaka, Motohiro Esaki, Junji Umeno, et al.. (2015). Therapeutic Strategy for Crohn's Disease with a Loss of Response to Infliximab: A Single-Center Retrospective Study. Digestion. 91(1). 50–56. 5 indexed citations
15.
Uraoka, Toshio, Shinji Tanaka, Takahisa Matsuda, et al.. (2013). Mo1596 Impact of Prototype Extra-Wide-Angle-View Colonoscope in the Adenoma Detection Rate: A Multicenter Randomized Controlled Trial. Gastrointestinal Endoscopy. 77(5). AB440–AB440. 3 indexed citations
16.
Uraoka, Toshio, Shinji Tanaka, Takayuki Matsumoto, et al.. (2012). A novel extra-wide-angle–view colonoscope: a simulated pilot study using anatomic colorectal models. Gastrointestinal Endoscopy. 77(3). 480–483. 27 indexed citations
17.
Maehata, Yuji, Shotaro Nakamura, Kiyoshi Fujisawa, et al.. (2011). Long-term effect of Helicobacter pylori eradication on the development of metachronous gastric cancer after endoscopic resection of early gastric cancer. Gastrointestinal Endoscopy. 75(1). 39–46. 155 indexed citations
18.
Matsumoto, Takayuki, Motohiro Esaki, Tomohiko Moriyama, et al.. (2008). Small-intestinal involvement in familial adenomatous polyposis: evaluation by double-balloon endoscopy and intraoperative enteroscopy. Gastrointestinal Endoscopy. 68(5). 911–919. 46 indexed citations
19.
Matsumoto, Takayuki, Tomohiko Moriyama, Motohiro Esaki, Shotaro Nakamura, & Mitsuo Iida. (2005). Performance of antegrade double-balloon enteroscopy: comparison with push enteroscopy. Gastrointestinal Endoscopy. 62(3). 392–398. 59 indexed citations
20.
Moriyama, Tomohiko, Takayuki Matsumoto, Kazuoki Hizawa, et al.. (2003). A Case of Multicentric Gastric Carcinoids Without Hypergastrinemia. Endoscopy. 35(1). 86–88. 6 indexed citations

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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