Tomoyuki Koike

6.1k total citations
239 papers, 3.7k citations indexed

About

Tomoyuki Koike is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Tomoyuki Koike has authored 239 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 182 papers in Surgery, 103 papers in Gastroenterology and 82 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Tomoyuki Koike's work include Helicobacter pylori-related gastroenterology studies (105 papers), Gastroesophageal reflux and treatments (82 papers) and Gastric Cancer Management and Outcomes (65 papers). Tomoyuki Koike is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (105 papers), Gastroesophageal reflux and treatments (82 papers) and Gastric Cancer Management and Outcomes (65 papers). Tomoyuki Koike collaborates with scholars based in Japan, United States and Canada. Tomoyuki Koike's co-authors include Tooru Shimosegawa, Katsunori Iijima, Akira Imatani, Shuichi Ohara, Kaname Uno, Naoki Asano, Yasuhiko Abe, Waku Hatta, Hitoshi Sekine and Nobuyuki Ara and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and PLoS ONE.

In The Last Decade

Tomoyuki Koike

227 papers receiving 3.6k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Tomoyuki Koike Japan	33	2.6k	1.5k	1.1k	315	253	239	3.7k
Edith Lahner Italy	39	3.0k 1.1×	1.7k 1.1×	1.2k 1.0×	316 1.0×	485 1.9×	136	4.2k
Johannes Zacherl Austria	35	2.6k 1.0×	608 0.4×	1.4k 1.2×	214 0.7×	443 1.8×	125	4.1k
Fernando Carballo Spain	26	1.3k 0.5×	470 0.3×	483 0.4×	158 0.5×	602 2.4×	113	2.1k
M C Allison United Kingdom	27	1.0k 0.4×	392 0.3×	805 0.7×	182 0.6×	350 1.4×	63	2.9k
Chan Gyoo Kim South Korea	37	2.6k 1.0×	1.6k 1.1×	3.2k 2.8×	370 1.2×	621 2.5×	156	4.5k
Masoud Sotoudeh Iran	35	2.0k 0.8×	684 0.5×	859 0.7×	655 2.1×	964 3.8×	141	4.2k
Sang Woo Lee South Korea	26	1.5k 0.6×	603 0.4×	699 0.6×	206 0.7×	237 0.9×	165	2.6k
Kun Yang China	30	1.2k 0.5×	615 0.4×	1.7k 1.5×	506 1.6×	804 3.2×	177	3.1k
Andrew N. Kingsnorth United Kingdom	40	5.6k 2.2×	286 0.2×	1.4k 1.2×	526 1.7×	608 2.4×	150	6.7k
Marco Vincenzo Lenti Italy	26	1.1k 0.4×	583 0.4×	276 0.2×	232 0.7×	172 0.7×	135	2.2k

Countries citing papers authored by Tomoyuki Koike

Since Specialization

Citations

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

Fields of papers citing papers by Tomoyuki Koike

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tomoyuki Koike

This figure shows the co-authorship network connecting the top 25 collaborators of Tomoyuki Koike. A scholar is included among the top collaborators of Tomoyuki Koike 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 Tomoyuki Koike. Tomoyuki Koike is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ogata, Yohei, Waku Hatta, Takeshi Kanno, et al.. (2025). Type 2 and type 3 gastric neuroendocrine tumors have high risk of lymph node metastasis: Systematic review and meta‐analysis. Digestive Endoscopy. 37(8). 834–843. 1 indexed citations

Ishimura, Norihisa, Nobuyuki Matsuhashi, Junko Fujisaki, et al.. (2025). Cancer Incidence in Japanese Patients With Long‐Segment Barrett's Esophagus—Japan Nationwide 10‐Year Prospective Cohort Study. Digestive Endoscopy. 38(1). e70070–e70070.

Ogata, Yohei, et al.. (2025). Recent Advances in Endoscopic Submucosal Dissection for Gastric Cancer: Focusing on Expanded Indications and Technological Innovations. Journal of the Korean Gastric Cancer Association. 26(1). 76–76.

Saito, Masahiro, Tomoyuki Koike, Yohei Ogata, et al.. (2025). Associations between excessive supragastric belching and esophageal reflux factors in patients with PPI-refractory GERD in Japan. Journal of Gastroenterology. 60(9). 1070–1078.

Hatta, Waku, Tomoyuki Koike, Naoki Asano, et al.. (2024). The Impact of Tobacco Smoking and Alcohol Consumption on the Development of Gastric Cancers. International Journal of Molecular Sciences. 25(14). 7854–7854. 10 indexed citations

Kawamura, Masashi, Noriya Uedo, Kenshi Yao, et al.. (2024). Endoscopic and histological risk stratification for gastric cancer using gastric intestinal metaplasia. Journal of Gastroenterology and Hepatology. 39(9). 1910–1916. 3 indexed citations

Uno, Kaname, Yohei Ogata, Masahiro Saito, et al.. (2024). A case of esophagogastric submucosal hematoma with hemorrhagic shock. Clinical Journal of Gastroenterology. 18(1). 48–52.

Satake, Toshihiko, et al.. (2024). Delayed breast reconstruction with autologous free flap after radiation therapy: vascular complications and aesthetic outcomes. Breast Cancer. 31(5). 798–806. 2 indexed citations

Uno, Kaname, Naoki Asano, Shin Hamada, et al.. (2023). Porphyromonas gingivalis Lipopolysaccharide Damages Mucosal Barrier to Promote Gastritis-Associated Carcinogenesis. Digestive Diseases and Sciences. 69(1). 95–111. 7 indexed citations

10.

Takeuchi, Akio, Naoki Asano, Akira Imatani, et al.. (2022). Suppressed Cellular Senescence Mediated by T-box3 in Aged Gastric Epithelial Cells may Contribute to Aging-related Carcinogenesis. Cancer Research Communications. 2(8). 772–783. 7 indexed citations

11.

Satake, Toshihiko, et al.. (2022). Stacked deep inferior epigastric perforator with sequential lumbar artery perforator flaps for bilateral breast reconstruction: A case report. Microsurgery. 42(8). 829–834. 2 indexed citations

12.

Kawamura, Masashi, Tomoyuki Koike, Yohei Ogata, et al.. (2022). Endoscopic Grading of Gastric Intestinal Metaplasia Using Magnifying and Nonmagnifying Narrow-Band Imaging Endoscopy. Diagnostics. 12(12). 3012–3012. 5 indexed citations

13.

Watanabe, Kenta, Shigeto Koizumi, Hiroyuki Watanabe, et al.. (2022). Visceral obesity is associated with an increased risk of developing esophago-gastric junctional adenocarcinoma in Japan: a population-based case–control study in Akita Prefecture. Esophagus. 19(3). 477–485. 2 indexed citations

14.

Kawamura, Masashi, Noriya Uedo, Tomoyuki Koike, et al.. (2021). Kyoto classification risk scoring system and endoscopic grading of gastric intestinal metaplasia for gastric cancer: Multicenter observation study in Japan. Digestive Endoscopy. 34(3). 508–516. 33 indexed citations

15.

Asano, Naoki, Akira Imatani, Tomohiro Watanabe, et al.. (2016). Cdx2 Expression and Intestinal Metaplasia Induced by H. pylori Infection of Gastric Cells Is Regulated by NOD1-Mediated Innate Immune Responses. Cancer Research. 76(5). 1135–1145. 60 indexed citations

16.

Iijima, Katsunori, Hitoshi Sekine, Tomoyuki Koike, et al.. (2004). Long‐term effect of Helicobacter pylori eradication on the reversibility of acid secretion in profound hypochlorhydria. Alimentary Pharmacology & Therapeutics. 19(11). 1181–1188. 49 indexed citations

17.

Ohara, Shuichi, et al.. (2003). Analysis of portal hemodynamics in long-term recurrence-free patients after endoscopic variceal ligation (EVL): Evaluation with endoscopic ultrasonography. Acta gastro-enterologica belgica. 45(1). 3–11. 1 indexed citations

18.

Koike, Tomoyuki, et al.. (2001). Helicobacter pylori infection prevents erosive reflux oesophagitis by decreasing gastric acid secretion. Gut. 49(3). 330–334. 159 indexed citations

19.

Koike, Tomoyuki, Yoko Yamagiwa, Tomoyuki Ohno, et al.. (1997). A CASE OF PLASMACYTOMA WITH AMYLOID DEPOSITS OF THE STOMACH. Acta gastro-enterologica belgica. 39(10). 1805–1811. 3 indexed citations

20.

Muto, Manabu, et al.. (1996). Complications of endoscopic polypectomy and endoscopic mucosal resection in the stomach. Acta gastro-enterologica belgica. 38(3). 858–865. 4 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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