Hideki Koga

981 total citations
35 papers, 592 citations indexed

About

Hideki Koga is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Pathology and Forensic Medicine. According to data from OpenAlex, Hideki Koga has authored 35 papers receiving a total of 592 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Surgery, 11 papers in Pulmonary and Respiratory Medicine and 10 papers in Pathology and Forensic Medicine. Recurrent topics in Hideki Koga's work include Helicobacter pylori-related gastroenterology studies (6 papers), Inflammatory Bowel Disease (6 papers) and Gastrointestinal disorders and treatments (4 papers). Hideki Koga is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (6 papers), Inflammatory Bowel Disease (6 papers) and Gastrointestinal disorders and treatments (4 papers). Hideki Koga collaborates with scholars based in Japan, Australia and Germany. Hideki Koga's co-authors include Mitsuo Iida, Takayuki Matsumoto, Takashi Yao, Masatoshi Fujishima, Kunihiko Aoyagi, Ken Haruma, Shotaro Nakamura, Kazuoki Hizawa, Shuji Tada and Masakazu Iida and has published in prestigious journals such as SHILAP Revista de lepidopterología, Cancer and Gut.

In The Last Decade

Hideki Koga

35 papers receiving 571 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hideki Koga Japan 14 250 180 137 125 123 35 592
Min Hu Chen China 15 456 1.8× 202 1.1× 89 0.6× 199 1.6× 71 0.6× 33 745
Aharon Hallak Israel 15 426 1.7× 159 0.9× 316 2.3× 184 1.5× 54 0.4× 34 1.0k
Takeshi Terai Japan 14 354 1.4× 188 1.0× 140 1.0× 159 1.3× 64 0.5× 42 659
Masataka Maruyama Japan 14 251 1.0× 199 1.1× 30 0.2× 101 0.8× 97 0.8× 34 651
Fatih Hilmioğlu Türkiye 13 281 1.1× 154 0.9× 77 0.6× 30 0.2× 94 0.8× 43 609
Katsuyoshi Ando Japan 14 203 0.8× 105 0.6× 96 0.7× 84 0.7× 32 0.3× 75 501
Nicola Della Valle Italy 15 206 0.8× 146 0.8× 154 1.1× 50 0.4× 21 0.2× 23 546
Miriam L. Christ United States 13 235 0.9× 117 0.7× 185 1.4× 68 0.5× 89 0.7× 19 765
Yong Woo Chung South Korea 10 224 0.9× 243 1.4× 46 0.3× 53 0.4× 63 0.5× 25 632
Panagiota Kitsanta United Kingdom 14 140 0.6× 169 0.9× 21 0.2× 51 0.4× 82 0.7× 29 628

Countries citing papers authored by Hideki Koga

Since Specialization
Citations

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

Fields of papers citing papers by Hideki Koga

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hideki Koga

This figure shows the co-authorship network connecting the top 25 collaborators of Hideki Koga. A scholar is included among the top collaborators of Hideki Koga 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 Hideki Koga. Hideki Koga 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.
Koide, Shunichi, et al.. (2020). Invasive Aspergillosis After Non-Fatal Drowning. SHILAP Revista de lepidopterología. 2 indexed citations
2.
Koga, Hideki, Kayoko Shimizu, Ken‐ichi Tarumi, et al.. (2009). Rectal mucosal prolapse syndrome as an unusual gastrointestinal manifestation of Sjögren's syndrome: a case report. Journal of Medical Case Reports. 3(1). 85–85. 1 indexed citations
3.
Koga, Hideki, Takayuki Matsumoto, & Mitsuo Iida. (2008). EPIDEMIOLOGY, DIAGNOSIS AND TREATMENTS OF NON-STEROIDAL ANTI-INFLAMMATORY DRUG-INDUCED ENTEROPATHY:A REVIEW OF THE LITERATURE. Acta gastro-enterologica belgica. 50(2). 189–198. 2 indexed citations
4.
Watanabe, Akiko, et al.. (2007). Exhaled carbon monoxide concentration is not elevated in patients with inflammatory bowel disease. Clinical and Experimental Medicine. 7(2). 77–81. 4 indexed citations
5.
Ye, Hongtao, Chris M. Bacon, Hongxiang Liu, et al.. (2007). Gastric MALT lymphoma with t(14;18)(q32;q21) involving IGH and BCL2 genes that responded to Helicobacter pylori eradication. Journal of Clinical Pathology. 60(10). 1171–1173. 11 indexed citations
6.
Shimizu, Kayoko, Hideki Koga, Mitsuo Iida, & Ken Haruma. (2007). Microcirculatory Changes in Experimental Mesenteric Longitudinal Ulcers of the Small Intestine in Rats. Digestive Diseases and Sciences. 52(11). 3019–3028. 11 indexed citations
7.
Matsumoto, Takayuki, Shotaro Nakamura, Motohiro Esaki, et al.. (2006). Endoscopic Features of Chronic Nonspecific Multiple Ulcers of the Small Intestine: Comparison with Nonsteroidal Anti-inflammatory Drug-Induced Enteropathy. Digestive Diseases and Sciences. 51(8). 1357–1363. 38 indexed citations
8.
Matsumoto, Hiroshi, Hideki Koga, Mitsuo Iida, et al.. (2006). Blockade of tumor necrosis factor-α-converting enzyme improves experimental small intestinal damage by decreasing matrix metalloproteinase-3 production in rats. Scandinavian Journal of Gastroenterology. 41(11). 1320–1329. 10 indexed citations
9.
Matsumoto, Hiroshi, Hideki Koga, Mitsuo Iida, et al.. (2003). CASE REPORT: Helicobacter-Independent, Chemotherapy-Resistant, Radiosensitive Gastric MALT Lymphoma with Massive Deposits of Amyloidlike Substance. Digestive Diseases and Sciences. 48(10). 2018–2022. 2 indexed citations
10.
Shimizu, Kayoko, Hideki Koga, Masaharu Takeda, et al.. (2003). CASE REPORT: Suddenly Accelerated Growth of Gastrointestinal Stromal Tumor of Remnant Stomach. Digestive Diseases and Sciences. 48(6). 1106–1109. 2 indexed citations
11.
Koga, Hideki, Mitsuo Iida, Hiroshi Matsumoto, et al.. (2002). Colonic aphthoid erosions as the only manifestation of tuberculosis: Case report. Gastrointestinal Endoscopy. 55(6). 743–745. 6 indexed citations
12.
Shimizu, Kayoko, Hideki Koga, Mitsuo Iida, et al.. (2002). CASE REPORT: Does Metronidazole Cure Cap Polyposis by Its Antiinflammatory Actions Instead of by Its Antibiotic Action?: A Case Study. Digestive Diseases and Sciences. 47(7). 1465–1468. 22 indexed citations
13.
Kanauchi, Osamu, Toshihiro Suga, Toshifumi Hibi∥, et al.. (2002). Treatment of ulcerative colitis by feeding with germinated barley foodstuff: first report of a multicenter open control trial. Journal of Gastroenterology. 37(S14). 67–72. 137 indexed citations
14.
Koga, Hideki, Kunihiko Aoyagi, Kazuoki Hizawa, et al.. (1999). Rapidly and infiltratively growing crohn's carcinoma of the small bowel. Clinical Imaging. 23(5). 298–301. 16 indexed citations
15.
Aoyagi, Kunihiko, Kazuoki Hizawa, Shotaro Nakamura, et al.. (1998). Multiple granular cell tumors of the esophagus removed endoscopically: a case report. Gastrointestinal Endoscopy. 48(5). 536–539. 13 indexed citations
16.
Koga, Hideki, Kunihiko Aoyagi, Takayuki Matsumoto, et al.. (1996). Jejunal Angiodysplasia Confirmed by Intravascular Injection Technique In Vitro. Journal of Clinical Gastroenterology. 23(2). 139–144. 7 indexed citations
17.
Koga, Hideki, Masakazu Iida, H. Suekane, et al.. (1995). Rapidly growing esophageal leiomyosarcoma: case report and review of the literature. Abdominal Imaging. 20(1). 15–19. 24 indexed citations
18.
Tada, Shuji, Mitsuo Iida, Takayuki Matsumoto, et al.. (1995). Small flat cancer of the rectum: Clinicopathologic and endoscopic features. Gastrointestinal Endoscopy. 42(2). 109–113. 35 indexed citations
19.
Koga, Hideki, et al.. (1994). Wegener’s Granulomatosis Accompanied by Communicating Hydrocephalus. The American Journal of the Medical Sciences. 307(4). 278–281. 2 indexed citations
20.
Tada, Shuji, et al.. (1994). A clinicopathologic study of small flat colorectal carcinoma. Cancer. 74(9). 2430–2435. 41 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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