Takehiro Okabayashi

5.3k total citations
204 papers, 3.7k citations indexed

About

Takehiro Okabayashi is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Takehiro Okabayashi has authored 204 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 103 papers in Surgery, 75 papers in Oncology and 73 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Takehiro Okabayashi's work include Pancreatic and Hepatic Oncology Research (47 papers), Gastric Cancer Management and Outcomes (37 papers) and Cholangiocarcinoma and Gallbladder Cancer Studies (24 papers). Takehiro Okabayashi is often cited by papers focused on Pancreatic and Hepatic Oncology Research (47 papers), Gastric Cancer Management and Outcomes (37 papers) and Cholangiocarcinoma and Gallbladder Cancer Studies (24 papers). Takehiro Okabayashi collaborates with scholars based in Japan, United States and China. Takehiro Okabayashi's co-authors include Kazuhiro Hanazaki, Michiya Kobayashi, Hiromichi Maeda, Takeki Sugimoto, Tsutomu Namikawa, Isao Nishimori, Yasuo Shima, Ken Okamoto, Tatsuaki Sumiyoshi and Hiroyuki Kitagawa and has published in prestigious journals such as SHILAP Revista de lepidopterología, Diabetes Care and Cancer.

In The Last Decade

Takehiro Okabayashi

194 papers receiving 3.5k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Takehiro Okabayashi Japan	33	1.8k	1.4k	1.2k	806	606	204	3.7k
Jaswinder S. Samra Australia	35	1.6k 0.9×	2.3k 1.7×	1.0k 0.9×	1.0k 1.3×	306 0.5×	221	4.3k
Basil J. Ammori United Kingdom	37	3.3k 1.8×	1.8k 1.3×	1.5k 1.2×	406 0.5×	215 0.4×	179	4.8k
Hong Joo Kim South Korea	36	1.6k 0.9×	1.3k 0.9×	1.0k 0.9×	931 1.2×	205 0.3×	124	3.5k
Nils Homann Germany	30	1.4k 0.8×	1.2k 0.9×	1.9k 1.6×	539 0.7×	141 0.2×	119	4.1k
Masahiko Onda Japan	33	1.7k 0.9×	1.1k 0.8×	889 0.8×	540 0.7×	115 0.2×	221	3.7k
Fumio Kimura Japan	38	2.7k 1.4×	1.8k 1.3×	1.8k 1.5×	591 0.7×	123 0.2×	155	4.6k
Yoshifumi Takeyama Japan	36	3.0k 1.6×	2.4k 1.8×	1.1k 0.9×	901 1.1×	92 0.2×	197	4.3k
Annibale Donini Italy	29	2.0k 1.1×	838 0.6×	733 0.6×	417 0.5×	251 0.4×	136	3.2k
Hiromichi Maeda Japan	24	882 0.5×	794 0.6×	584 0.5×	240 0.3×	391 0.6×	196	2.1k
Masatoshi Ishigami Japan	33	1.4k 0.8×	1.2k 0.9×	543 0.5×	2.5k 3.1×	403 0.7×	278	4.7k

Countries citing papers authored by Takehiro Okabayashi

Since Specialization

Citations

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

Fields of papers citing papers by Takehiro Okabayashi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takehiro Okabayashi

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

Okabayashi, Takehiro, Kenta Sui, Sojiro Morita, et al.. (2021). A proposal to modify the 8th edition of the UICC staging system for pancreatic adenocarcinoma. Langenbeck s Archives of Surgery. 406(3). 667–677. 1 indexed citations

Okabayashi, Takehiro, Yasuo Shima, Tatsuaki Sumiyoshi, et al.. (2017). Incidence and Risk Factors of Cholangitis after Hepaticojejunostomy. Journal of Gastrointestinal Surgery. 22(4). 676–683. 28 indexed citations

Shima, Yasuo, et al.. (2015). Desmoid tumor of the stomach. Endoscopy. 47(S 01). E242–E243. 7 indexed citations

Kitagawa, Hiroyuki, Tsutomu Namikawa, Jun Iwabu, et al.. (2013). Efficacy of Laparoscopic Gastric Mobilization for Esophagectomy: Comparison with Open Thoraco-abdominal Approach. Journal of Laparoendoscopic & Advanced Surgical Techniques. 23(5). 452–455. 8 indexed citations

Hanazaki, Kazuhiro, Akihiro Sakurai, Masaya Munekage, et al.. (2012). Surgery for a gastroenteropancreatic neuroendocrine tumor (GEPNET) in multiple endocrine neoplasia type 1. Surgery Today. 43(3). 229–236. 16 indexed citations

Namikawa, Tsutomu, Eri Munekage, Hiroyuki Kitagawa, et al.. (2012). Double Tract Reconstruction After Gastrectomy Facilitates Endoscopic Access to the Biliary Tree. Digestive Diseases and Sciences. 58(5). 1422–1427. 3 indexed citations

Akimori, Toyokazu, Kazuhiro Hanazaki, Takehiro Okabayashi, et al.. (2011). Quantitative distribution of brush cells in the rat gastrointestinal tract: brush cell population coincides with NaHCO3 secretion. Medical Molecular Morphology. 44(1). 7–14. 12 indexed citations

Uemura, Sunao, Hiromichi Maeda, Masaya Munekage, et al.. (2009). Hepatic Resection for Metastatic Colon Cancer in Patients with Situs Inversus Totalis Complicated by Multiple Anomalies of the Hepatobiliary System: The First Case Report. Journal of Gastrointestinal Surgery. 13(9). 1724–1727. 16 indexed citations

Okabayashi, Takehiro, Isao Nishimori, Koichi Yamashita, et al.. (2009). Preoperative oral supplementation with carbohydrate and branched-chain amino acid-enriched nutrient improves insulin resistance in patients undergoing a hepatectomy: a randomized clinical trial using an artificial pancreas. Amino Acids. 38(3). 901–907. 31 indexed citations

10.

Okabayashi, Takehiro & Kazuhiro Hanazaki. (2008). Overwhelming postsplenectomy infection syndrome in adults - A clinically preventable disease. World Journal of Gastroenterology. 14(2). 176–176. 88 indexed citations

11.

Okabayashi, Takehiro, Isao Nishimori, Takeki Sugimoto, et al.. (2008). Effects of branched‐chain amino acids–enriched nutrient support for patients undergoing liver resection for hepatocellular carcinoma. Journal of Gastroenterology and Hepatology. 23(12). 1869–1873. 53 indexed citations

12.

Okabayashi, Takehiro, Michiya Kobayashi, Isao Nishimori, et al.. (2008). Clinicopathological features and medical management of early gastric cancer. The American Journal of Surgery. 195(2). 229–232. 26 indexed citations

13.

Kitagawa, Hiroyuki, et al.. (2007). AN ADULT CASE OF GASTROINTESTINAL STROMAL TUMOR WITH INTUSSUSCEPTION OF THE JEJUNUM. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 68(3). 603–606. 1 indexed citations

14.

Kobayashi, Michiya, Ken Okamoto, Tsutomu Namikawa, et al.. (2007). Laparoscopic D3 Lymph Node Dissection with Preservation of the Superior Rectal Artery for the Treatment of Proximal Sigmoid and Descending Colon Cancer. Journal of Laparoendoscopic & Advanced Surgical Techniques. 17(4). 461–466. 11 indexed citations

15.

Dabanaka, Ken, Michiya Kobayashi, Ken Okamoto, et al.. (2007). A CASE OF INTRAPELVIC, EXTRAPERITONEAL RECURRENCE OF STAGE IV DESCENDING COLON CANCER 16 YEARS AFTER SURGERY. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 68(7). 1821–1825. 1 indexed citations

16.

Dabanaka, Ken, Michiya Kobayashi, Tsutomu Namikawa, et al.. (2007). A Resected Case of Splenic T-cell Malignant Lymphoma. The Japanese Journal of Gastroenterological Surgery. 40(11). 1834–1838. 3 indexed citations

17.

Kobayashi, Michiya, Koji Oba, Junichi Sakamoto, et al.. (2007). Pharmacokinetic study of weekly administration dose of paclitaxel in patients with advanced or recurrent gastric cancer in Japan. Gastric Cancer. 10(1). 52–57. 22 indexed citations

18.

Maeda, Hiromichi, Takehiro Okabayashi, Michiya Kobayashi, et al.. (2006). Emergency Pancreatoduodenectomy for Pancreatic Metastasis from Renal Cell Carcinoma in a Patient with von Hipple-Lindau Disease: A Case Report. Digestive Diseases and Sciences. 51(8). 1383–1387. 15 indexed citations

19.

Okabayashi, Takehiro, et al.. (2005). Posterior gastric artery in angiograms and its surgical importance.. PubMed. 52(61). 298–301. 7 indexed citations

20.

Kobayashi, Masaaki, Ken Okamoto, Tsutomu Namikawa, Takehiro Okabayashi, & Keijiro Araki. (2005). Laparoscopic lymph node dissection around the inferior mesenteric artery for cancer in the lower sigmoid colon and rectum. Surgical Endoscopy. 20(4). 563–569. 50 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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