Kazuhiko Koike

3.0k total citations
59 papers, 1.9k citations indexed

About

Kazuhiko Koike is a scholar working on Gastroenterology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Kazuhiko Koike has authored 59 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Gastroenterology, 31 papers in Surgery and 23 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Kazuhiko Koike's work include Gastrointestinal Bleeding Diagnosis and Treatment (36 papers), Gastric Cancer Management and Outcomes (20 papers) and Gastrointestinal disorders and treatments (18 papers). Kazuhiko Koike is often cited by papers focused on Gastrointestinal Bleeding Diagnosis and Treatment (36 papers), Gastric Cancer Management and Outcomes (20 papers) and Gastrointestinal disorders and treatments (18 papers). Kazuhiko Koike collaborates with scholars based in Japan and United States. Kazuhiko Koike's co-authors include Atsuo Yamada, Tomonori Aoki, Ryota Niikura, Shiro Oka, Mitsuhiro Fujishiro, Shinji Tanaka, Tomoki Matsuda, Akiyoshi Tsuboi, Soichiro Ishihara and Hiroaki Saito and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and PLoS ONE.

In The Last Decade

Kazuhiko Koike

56 papers receiving 1.9k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kazuhiko Koike Japan	22	1.0k	793	503	476	316	59	1.9k
Hsu‐Heng Yen Taiwan	20	664 0.6×	1.0k 1.3×	209 0.4×	426 0.9×	382 1.2×	211	1.9k
Jong Sun Rew South Korea	22	551 0.5×	817 1.0×	215 0.4×	362 0.8×	170 0.5×	92	1.4k
Michael Chiorean United States	21	384 0.4×	850 1.1×	214 0.4×	222 0.5×	630 2.0×	94	1.9k
Mikitaka Iguchi Japan	28	886 0.8×	1.8k 2.3×	511 1.0×	1.8k 3.7×	368 1.2×	112	3.2k
Sung Noh Hong South Korea	27	489 0.5×	985 1.2×	1.0k 2.1×	946 2.0×	558 1.8×	184	2.9k
Marian M. Haber United States	24	669 0.6×	1.7k 2.1×	214 0.4×	850 1.8×	298 0.9×	58	2.5k
Gian Eugenio Tontini Italy	26	504 0.5×	626 0.8×	529 1.1×	327 0.7×	568 1.8×	127	1.7k
M Gélin Belgium	24	250 0.2×	1.2k 1.5×	467 0.9×	455 1.0×	428 1.4×	97	1.8k
Yuji Amano Japan	27	522 0.5×	1.3k 1.6×	298 0.6×	612 1.3×	148 0.5×	136	2.2k
Andrea Iannone Italy	21	286 0.3×	511 0.6×	410 0.8×	301 0.6×	367 1.2×	70	1.3k

Countries citing papers authored by Kazuhiko Koike

Since Specialization

Citations

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

Fields of papers citing papers by Kazuhiko Koike

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kazuhiko Koike

This figure shows the co-authorship network connecting the top 25 collaborators of Kazuhiko Koike. A scholar is included among the top collaborators of Kazuhiko 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 Kazuhiko Koike. Kazuhiko 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

Fukudo, Shin, Toshikatsu Okumura, Masahiko Inamori, et al.. (2021). Evidence-based clinical practice guidelines for irritable bowel syndrome 2020. Journal of Gastroenterology. 56(3). 193–217. 103 indexed citations

Saito, Hiroaki, Tomonori Aoki, Kazuharu Aoyama, et al.. (2020). Automatic detection and classification of protruding lesions in wireless capsule endoscopy images based on a deep convolutional neural network. Gastrointestinal Endoscopy. 92(1). 144–151.e1. 131 indexed citations

Aoki, Tomonori, Atsuo Yamada, Yusuke Kato, et al.. (2020). Automatic detection of various abnormalities in capsule endoscopy videos by a deep learning-based system: a multicenter study. Gastrointestinal Endoscopy. 93(1). 165–173.e1. 46 indexed citations

Niikura, Ryota, Tomonori Aoki, Takuya Kawahara, et al.. (2020). Natural history of upper and lower gastrointestinal bleeding in hemodialysis patients: A dual‐center long‐term cohort study. Journal of Gastroenterology and Hepatology. 36(1). 112–117. 9 indexed citations

Aoki, Tomonori, Atsuo Yamada, Kazuharu Aoyama, et al.. (2019). Clinical usefulness of a deep learning‐based system as the first screening on small‐bowel capsule endoscopy reading. Digestive Endoscopy. 32(4). 585–591. 82 indexed citations

Yakabi, Seiichi, Lixin Wang, Hiroshi Karasawa, et al.. (2018). VIP is involved in peripheral CRF-induced stimulation of propulsive colonic motor function and diarrhea in male rats. American Journal of Physiology-Gastrointestinal and Liver Physiology. 314(5). G610–G622. 11 indexed citations

Sakitani, Kosuke, Nobumi Suzuki, Sozaburo Ihara, et al.. (2018). Decline in perception of acid regurgitation symptoms from gastroesophageal reflux disease in diabetes mellitus patients. PLoS ONE. 13(3). e0194466–e0194466. 2 indexed citations

Niikura, Ryota, Atsuo Yamada, Koutarou MAKI, et al.. (2017). Associations between drugs and small‐bowel mucosal bleeding: Multicenter capsule‐endoscopy study. Digestive Endoscopy. 30(1). 79–89. 15 indexed citations

Nagata, Naoyoshi, Ryota Niikura, Atsuo Yamada, et al.. (2016). Acute Middle Gastrointestinal Bleeding Risk Associated with NSAIDs, Antithrombotic Drugs, and PPIs: A Multicenter Case-Control Study. PLoS ONE. 11(3). e0151332–e0151332. 36 indexed citations

10.

Niikura, Ryota, Hideo Yasunaga, Yutaka Yamaji, et al.. (2014). Factors affecting in-hospital mortality in patients with lower gastrointestinal tract bleeding: a retrospective study using a national database in Japan. Journal of Gastroenterology. 50(5). 533–540. 35 indexed citations

11.

Suzuki, Hirobumi, Atsuo Yamada, Hirotsugu Watabe, et al.. (2012). Successful Treatment of Early-Stage Jejunum Adenocarcinoma by Endoscopic Mucosal Resection Using Double-Balloon Endoscopy: A Case Report. Diagnostic and therapeutic endoscopy. 2012. 1–4. 4 indexed citations

12.

Yamada, Atsuo, Hirotsugu Watabe, Shuntaro Obi, et al.. (2010). SURVEILLANCE OF SMALL INTESTINAL ABNORMALITIES IN PATIENTS WITH HEPATOCELLULAR CARCINOMA: A PROSPECTIVE CAPSULE ENDOSCOPY STUDY. Digestive Endoscopy. 23(2). 124–129. 9 indexed citations

13.

Kogure, Hirofumi, Hirotsugu Watabe, Atsuo Yamada, et al.. (2010). Spiral enteroscopy for therapeutic ERCP in patients with surgically altered anatomy: actual technique and review of the literature. Journal of Hepato-Biliary-Pancreatic Sciences. 18(3). 375–379. 19 indexed citations

14.

Ota, Yasuo, Keita Tatsuno, Shu Okugawa, et al.. (2007). Relationship between the initial dose of micafungin and its efficacy in patients with candidemia. Journal of Infection and Chemotherapy. 13(4). 208–212. 19 indexed citations

15.

Okugawa, Shu, Yasuo Ota, Keita Tatsuno, et al.. (2006). A case of invasive central nervous system aspergillosis treated with micafungin with monitoring of micafungin concentrations in the cerebrospinal fluid. Scandinavian Journal of Infectious Diseases. 39(4). 344–346. 35 indexed citations

16.

Kohda, Kyuhei, et al.. (2001). Remission of idiopathic thrombocytopenic purpura after eradication of Helicobactor pylori. Report of two cases.. Nihon Naika Gakkai Zasshi. 90(10). 2069–2070. 2 indexed citations

17.

Moriya, Kyoji, Hajime Fujie, Hiroshi Yotsuyanagi, et al.. (1997). SUBCELLULAR LOCALIZATION OF HEPATITIS C VIRUS STRUCTURAL PROTEINS IN THE LIVER OF TRANSGENIC MICE. Japanese Journal of Medical Science and Biology. 50(4-5). 169–177. 23 indexed citations

18.

Koike, Kazuhiko. (1995). Hepatitis B Virus HBx Gene and Hepatocarcinogenesis. Intervirology. 38(3-4). 134–142. 70 indexed citations

19.

Koike, Kazuhiko, Hiroshi Yotsuyanagi, Kyoji Moriya, et al.. (1995). Dominant replication of either virus in dual infection with hepatitis viruses B and C. Journal of Medical Virology. 45(2). 236–239. 63 indexed citations

20.

Yotsuyanagi, Hiroshi, Shiro Iino, Kazuhiko Koike, et al.. (1993). Duration of viremia in human hepatitis a viral infection as determined by polymerase chain reaction. Journal of Medical Virology. 40(1). 35–38. 42 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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