Akihiro Okano

550 total citations
43 papers, 357 citations indexed

About

Akihiro Okano is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Hepatology. According to data from OpenAlex, Akihiro Okano has authored 43 papers receiving a total of 357 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Surgery, 16 papers in Pulmonary and Respiratory Medicine and 13 papers in Hepatology. Recurrent topics in Akihiro Okano's work include Hepatocellular Carcinoma Treatment and Prognosis (9 papers), Gastrointestinal disorders and treatments (7 papers) and Cholangiocarcinoma and Gallbladder Cancer Studies (6 papers). Akihiro Okano is often cited by papers focused on Hepatocellular Carcinoma Treatment and Prognosis (9 papers), Gastrointestinal disorders and treatments (7 papers) and Cholangiocarcinoma and Gallbladder Cancer Studies (6 papers). Akihiro Okano collaborates with scholars based in Japan and United Kingdom. Akihiro Okano's co-authors include Hiroshi Takakuwa, Masaya Ohana, Kiyoshi Hajiro, Akiyoshi Nishio, Mitsunobu Matsushita, Fusako Kusumi, Motoshige Nabeshima, M. Tominaga, Yoichiro Kobashi and Shigeru Kato and has published in prestigious journals such as The American Journal of Gastroenterology, Gastrointestinal Endoscopy and Digestive Diseases and Sciences.

In The Last Decade

Akihiro Okano

41 papers receiving 340 citations

Peers

Akihiro Okano

SURGE

PRM

GASTR

HEPAT

ONCOL

Laura Troiani Italy

Renzo Suriani Italy

Massimo Graffeo Italy

Takuma Okamura Japan

A Wee Singapore

C Finlayson United Kingdom

Jean Auroux France

Noriyuki Nishino Japan

Shinsaku Obara Japan

J Paris France

Laura Troiani Italy

Akihiro Okano

171 ×1.0

SURGE

104 ×0.7

PRM

73 ×0.9

GASTR

101 ×1.3

HEPAT

91 ×1.4

ONCOL

Citations per year, relative to Akihiro Okano Akihiro Okano (= 1×) peers Laura Troiani

Countries citing papers authored by Akihiro Okano

Since Specialization

Citations

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

Fields of papers citing papers by Akihiro Okano

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Akihiro Okano

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

Fukuda, Akihisa, Munemasa Nagao, Akihiro Okano, et al.. (2023). A case of hepatic reactive lymphoid hyperplasia: the review of 23 cases from the literatures. Clinical Journal of Gastroenterology. 16(6). 877–883.

Ueo, Taro, Ryuki Minami, Yasuhiro Takeda, et al.. (2022). [A case of unresectable intrahepatic cholangiocarcinoma receiving sustainable pembrolizumab therapy].. PubMed. 119(4). 360–367. 1 indexed citations

Shimozato, Naotaka, Tadashi Namisaki, Akihiro Okano, et al.. (2021). Efficacy and Safety of Lenvatinib for Patients With Advanced Hepatocellular Carcinoma: A Retrospective, Real-world Study Conducted in Japan. Anticancer Research. 42(1). 173–183. 2 indexed citations

Okano, Akihiro, et al.. (2019). Impact of an ultrasound-guided radiofrequency ablation training program on the outcomes in patients with hepatocellular carcinoma. Diagnostic and Interventional Imaging. 100(12). 771–780. 9 indexed citations

Okano, Akihiro, et al.. (2016). Immunoglobulin G4-related hepatic inflammatory pseudotumor invading the abdominal wall. Clinical Journal of Gastroenterology. 10(1). 57–62. 8 indexed citations

Okano, Akihiro, Shigeru Kato, & Masaya Ohana. (2016). Helicobacter pylori-negative gastric cancer: advanced-stage undifferentiated adenocarcinoma located in the pyloric gland area. Clinical Journal of Gastroenterology. 10(1). 13–17. 11 indexed citations

Okano, Akihiro & Masaya Ohana. (2015). Spontaneous Regression of Hepatocellular Carcinoma: Its Imaging Course Leading to Complete Disappearance. Case Reports in Oncology. 8(1). 94–100. 8 indexed citations

Okano, Akihiro, Masaya Ohana, & Fusako Kusumi. (2014). Idiopathic cholestatic jaundice may be a paraneoplastic manifestation of underlying malignancy: a case of prostate cancer. Clinical Journal of Gastroenterology. 7(3). 278–282. 9 indexed citations

Okano, Akihiro, Hiroshi Takakuwa, & Takefumi Nakamura. (2010). Spontaneous regression of diffuse intrahepatic recurrence with portal vein tumor thrombus after resection of hepatocellular carcinoma. Clinical Journal of Gastroenterology. 4(1). 43–48. 5 indexed citations

10.

Okano, Akihiro, et al.. (2007). Parietal-cell hyperplasia mimicking sporadic fundic gland polyps in the atrophic mucosa of autoimmune gastritis. Gastrointestinal Endoscopy. 66(2). 394–395. 8 indexed citations

11.

Okano, Akihiro, et al.. (2004). Gastric Intramucosal Carcinoma in a Small Hyperplastic Foveolar Polyp. Endoscopy. 36(12). 1134–1134. 2 indexed citations

12.

Okano, Akihiro, Kiyoshi Hajiro, Hiroshi Takakuwa, Akiyoshi Nishio, & Mitsunobu Matsushita. (2003). Predictors of bleeding after endoscopic mucosal resection of gastric tumors. Gastrointestinal Endoscopy. 57(6). 687–690. 61 indexed citations

13.

Chung, Hobyung, Masatoshi Kudo, Takashi Kumada, et al.. (2003). Risk of HCV transmission after needlestick injury, and the efficacy of short-duration interferon administration to prevent HCV transmission to medical personnel. Journal of Gastroenterology. 38(9). 877–879. 23 indexed citations

14.

Okano, Akihiro, Hiroshi Takakuwa, & Akiyoshi Nishio. (2001). Giant Stone in the Common Bile Duct. Endoscopy. 33(10). 907–907. 3 indexed citations

15.

Nakase, Hiroshi, Kazuichi Okazaki, Chiharu Kawanami, et al.. (2001). Therapeutic effects on intestinal Behçet’s disease of an intravenous drug delivery system using dexamethasone incorporated in lipid emulsion. Journal of Gastroenterology and Hepatology. 16(11). 1306–1308. 6 indexed citations

16.

Okano, Akihiro, Hiroshi Takakuwa, & Akiyoshi Nishio. (2001). Granular cell tumor of the rectum. Gastrointestinal Endoscopy. 54(5). 624–624. 2 indexed citations

17.

Okano, Akihiro, Kiyoshi Hajiro, Hiroshi Takakuwa, & Yoichiro Kobashi. (1998). Fibrolamellar Carcinoma of the Liver With a Mixture of Ordinary Hepatocellular Carcinoma: A Case Report. The American Journal of Gastroenterology. 93(7). 1144–1145. 10 indexed citations

18.

Matsushita, Mitsunobu, Kiyoshi Hajiro, Hiroshi Takakuwa, et al.. (1998). Ineffective use of a detachable snare for colonoscopic polypectomy of large polyps. Gastrointestinal Endoscopy. 47(6). 496–499. 48 indexed citations

19.

Matsushita, Masahiro, Kiyoshi Hajiro, Hiroshi Takakuwa, et al.. (1995). Focal nodular hyperplasia of the liver without central scar. Digestive Diseases and Sciences. 40(11). 2407–2410. 11 indexed citations

20.

Fujino, Takayuki, et al.. (1992). A case of hepatic hydrothorax who was diagnosed by intraperitoneal indocyanine green (ICG) injection and recovered through chemical pleurodesis. 62(12). 1620–1625. 1 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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