Keiichi Okano
About
Keiichi Okano is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine.
According to data from OpenAlex, Keiichi Okano has authored 258 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 131 papers in Surgery, 89 papers in Oncology and 70 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Keiichi Okano's work include Pancreatic and Hepatic Oncology Research (62 papers), Pancreatitis Pathology and Treatment (32 papers) and Gastric Cancer Management and Outcomes (31 papers). Keiichi Okano is often cited by papers focused on Pancreatic and Hepatic Oncology Research (62 papers), Pancreatitis Pathology and Treatment (32 papers) and Gastric Cancer Management and Outcomes (31 papers). Keiichi Okano collaborates with scholars based in Japan, United States and Greece. Keiichi Okano's co-authors include Yasuyuki Suzuki, Takashi Maeba, Tsutomu Masaki, Hisao Wakabayashi, Shinichi Yachida, Hisashi Usuki, Kunihiko Izuishi, Hajime Maeta, Ken Ishimura and Hideki Kobara and has published in prestigious journals such as The Lancet, SHILAP Revista de lepidopterología and Gastroenterology.
In The Last Decade
Keiichi Okano
228 papers receiving 3.6k citations
Peers
Keiichi Okano
Mario Lise Italy
Birgit Rudolph Germany
Akihiko Tsuchida Japan
Christopher Christophi Australia
Susan Tsai United States
Yutaka Komatsu Japan
Daisuke Hashimoto Japan
Ken Kamata Japan
Marc A. Reymond Germany
Manabu Shiozawa Japan
Citations per year, relative to Keiichi Okano Keiichi Okano (= 1×)
peers
Mario Lise
Countries citing papers authored by Keiichi Okano
Since
Specialization
Citations
This map shows the geographic impact of Keiichi Okano'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 Keiichi Okano with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keiichi Okano more than expected).
Fields of papers citing papers by Keiichi Okano
Since
Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences
This network shows the impact of papers produced by Keiichi Okano. 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 Keiichi Okano. The network helps show where Keiichi Okano may publish in the future.
Co-authorship network of co-authors of Keiichi Okano
This figure shows the co-authorship network connecting the top 25 collaborators of Keiichi Okano. A scholar is included among the top collaborators of Keiichi Okano 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 Keiichi Okano. Keiichi Okano is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
1.
Suto, Hironobu, Yukio Ando, S. Takahashi, et al.. (2024). Relationships between postoperative recurrences and standardized uptake value on 18F-fluorodeoxyglucose-positron emission tomography in patients with resectable and borderline resectable pancreatic ductal adenocarcinoma who underwent curative pancreatic resection after neoadjuvant chemoradiotherapy. Pancreatology. 24(7). 1133–1140.
2.
Ando, Yukio, Akihiro Kondo, Hironobu Suto, et al.. (2024). A case of chronic expanding hematoma mimicking a cystic pancreatic tumor. Surgical Case Reports. 10(1). 160–160.
3.
Suto, Hironobu, Minoru Oshima, S. Takahashi, et al.. (2024). Short- and Long-Term Outcomes of Neoadjuvant Chemoradiotherapy Followed by Pancreatoduodenectomy in Elderly Patients with Resectable and Borderline Resectable Pancreatic Cancer: A Retrospective Study. Journal of Clinical Medicine. 13(5). 1216–1216.
4.
Suto, Hironobu, Minoru Oshima, Hideki Kamada, et al.. (2024). Tumor location, clinicopathological features, and perioperative and prognostic outcomes in patients who underwent pancreatic resection following neoadjuvant chemoradiotherapy for resectable pancreatic cancer: A retrospective study. Pancreatology. 24(3). 431–436.
5.
Suto, Hironobu, et al.. (2024). Predictive role of the prognostic nutritional index in patients with pancreatic ductal adenocarcinoma who underwent neoadjuvant chemoradiotherapy followed by curative pancreatic resection: A retrospective study using prospectively collected data. Journal of Hepato-Biliary-Pancreatic Sciences. 31(6). 404–414.
6.
Suto, Hironobu, Minoru Oshima, Hideki Kamada, et al.. (2023). Tumor-to-blood pool ratio of 18F-fluorodeoxyglucose-positron emission tomography's standardized uptake value as a useful parameter indicating malignant transformation in pancreatic branch-duct intraductal papillary mucinous neoplasm compared to the international Fukuoka guidelines: a retrospective cohort study from surgical resections. HPB. 26(2). 291–298.
7.
Okano, Keiichi, Masahiro Sugimoto, Hironobu Suto, et al.. (2022). Tumor metabolic alterations after neoadjuvant chemoradiotherapy predict postoperative recurrence in patients with pancreatic cancer. Japanese Journal of Clinical Oncology. 52(8). 887–895.
8.
Kondo, Akihiro, Keiichi Okano, Kensuke Kumamoto, et al.. (2022). Surgical management and outcomes of obstructive colorectal cancer in elderly patients: A multi-institutional retrospective study. Surgery. 172(1). 60–68.
9.
Suto, Hironobu, Minoru Oshima, S. Takahashi, et al.. (2022). Efficacy of neoadjuvant chemoradiotherapy followed by pancreatic resection for older patients with resectable and borderline resectable pancreatic ductal adenocarcinoma. HPB. 25(1). 136–145.
10.
Oshima, Minoru, Keiichi Okano, Hideki Kamada, et al.. (2022). P53 immunolabeling in EUS‐FNA biopsy can predict low resection rate and early recurrence in resectable or borderline resectable pancreatic cancer treated with neoadjuvant therapy. Journal of Hepato-Biliary-Pancreatic Sciences. 30(6). 802–814.
11.
Kobayashi, Nobuya, Hideki Kobara, Noriko Nishiyama, et al.. (2021). Wafer paper and ring-mounted polyglycolic acid sheet method for shielding artificial gastric floor. Minimally Invasive Therapy & Allied Technologies. 31(4). 548–555.
12.
Kobara, Hideki, Nobuya Kobayashi, Noriko Nishiyama, et al.. (2021). Long-term outcomes of over-the-scope clip for refractory gastrointestinal diseases. Minimally Invasive Therapy & Allied Technologies. 31(4). 628–634.
13.
Kamada, Hideki, Hideki Kobara, Naoki Fujita, et al.. (2021). Repeated balloon inflation under low pressure may reduce serious adverse events during endoscopic papillary large balloon dilation. Journal of Hepato-Biliary-Pancreatic Sciences. 29(5). e33–e35.
14.
Yokohira, Masanao, Keiko Yamakawa, Hiroyuki Okuyama, et al.. (2021). Reproducibility and prognostic significance of area of residual tumor (ART) in post-neoadjuvant resections of pancreatic ductal adenocarcinoma. Pancreatology. 21(8). 1506–1515.
15.
Morishita, Asahiro, Koji Fujita, Hisakazu Iwama, et al.. (2020). Role of microRNA-210-3p in hepatitis B virus-related hepatocellular carcinoma. American Journal of Physiology-Gastrointestinal and Liver Physiology. 318(3). G401–G409.
16.
Kobara, Hideki, Noriko Nishiyama, Hirohito Mori, et al.. (2020). Efficacy of crystal violet for identifying the distal end in esophageal submucosal tunnel resection. Minimally Invasive Therapy & Allied Technologies. 30(3). 133–138.
17.
Kobara, Hideki, Hirohito Mori, Noriko Nishiyama, et al.. (2018). Over‐the‐scope clip system: A review of 1517 cases over 9 years. Journal of Gastroenterology and Hepatology. 34(1). 22–30.
18.
Kondo, Akihiro, Yuji Nishizawa, Masaaki Ito, et al.. (2016). Relationship between tissue tension and thermal diffusion to peripheral tissue using an energy device. Asian Journal of Endoscopic Surgery. 9(3). 226–230.
19.
Kato, Kiyohito, Jian Gong, Hisakazu Iwama, et al.. (2012). The Antidiabetic Drug Metformin Inhibits Gastric Cancer Cell Proliferation In Vitro and In Vivo. Molecular Cancer Therapeutics. 11(3). 549–560.
20.
Tokimatsu, Koji, Katsuhiko Yamaji, Makoto Katsurai, Keiichi Okano, & Tomoaki Yoshida. (1996). Sensitivity Analysis of Cost of Electricity (COE) of Tokamak Fusion Power Reactor. 1996(64). 19–28.
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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