Morimasa Tomikawa

4.9k total citations
167 papers, 3.8k citations indexed

About

Morimasa Tomikawa is a scholar working on Surgery, Hepatology and Epidemiology. According to data from OpenAlex, Morimasa Tomikawa has authored 167 papers receiving a total of 3.8k indexed citations (citations by other indexed papers that have themselves been cited), including 103 papers in Surgery, 72 papers in Hepatology and 54 papers in Epidemiology. Recurrent topics in Morimasa Tomikawa's work include Liver Disease and Transplantation (67 papers), Liver Disease Diagnosis and Treatment (51 papers) and Surgical Simulation and Training (25 papers). Morimasa Tomikawa is often cited by papers focused on Liver Disease and Transplantation (67 papers), Liver Disease Diagnosis and Treatment (51 papers) and Surgical Simulation and Training (25 papers). Morimasa Tomikawa collaborates with scholars based in Japan, United States and South Korea. Morimasa Tomikawa's co-authors include Makoto Hashizume, Tomohiko Akahoshi, Keizō Sugimachi, Hirofumi Kawanaka, Kazuo Tanoue, Yoshihiko Maehara, Masayuki Ohta, Norikazu Gotoh, Kozo Konishi and Nao Kinjo and has published in prestigious journals such as Gastroenterology, Hepatology and Cancer.

In The Last Decade

Morimasa Tomikawa

162 papers receiving 3.7k citations

Peers

Morimasa Tomikawa

SURGE

HEPAT

EPIDE

PRM

Tomohiko Akahoshi Japan

Joon Seok Lim South Korea

Alexis Kelekis Greece

Kazuo Tanoue Japan

Tommaso Vincenzo Bartolotta Italy

Giuseppe Navarra Italy

Adriaan Moelker Netherlands

Garth H. Ballantyne United States

Karl J. Oldhafer Germany

Guy Hubens Belgium

Tomohiko Akahoshi Japan

Morimasa Tomikawa

1.3k ×0.6

SURGE

1.3k ×0.8

HEPAT

1.0k ×0.8

EPIDE

284 ×0.5

244 ×0.4

PRM

Citations per year, relative to Morimasa Tomikawa Morimasa Tomikawa (= 1×) peers Tomohiko Akahoshi

Countries citing papers authored by Morimasa Tomikawa

Since Specialization

Citations

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

Fields of papers citing papers by Morimasa Tomikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Morimasa Tomikawa

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

Tomikawa, Morimasa, et al.. (2014). A single port laparoscopic surgery robot with high force transmission and a large workspace. Surgical Endoscopy. 28(9). 2719–2729. 29 indexed citations

Uemura, Munenori, Morimasa Tomikawa, Ryuichi Kumashiro, et al.. (2013). Analysis of hand motion differentiates expert and novice surgeons. Journal of Surgical Research. 188(1). 8–13. 61 indexed citations

Hashimoto, Naotaka, Tomohiko Akahoshi, Morimasa Tomikawa, et al.. (2013). Treatment of Bleeding Rectal Varices With Transumbilical Venous Obliteration of the Inferior Mesenteric Vein. Surgical Laparoscopy Endoscopy & Percutaneous Techniques. 23(3). e134–e137. 7 indexed citations

Tsutsumi, Norifumi, Morimasa Tomikawa, Munenori Uemura, et al.. (2013). Image-guided laparoscopic surgery in an open MRI operating theater. Surgical Endoscopy. 27(6). 2178–2184. 26 indexed citations

Uehara, Hideo, Tomohiko Akahoshi, Naotaka Hashimoto, et al.. (2012). Endothelin‐1 derived from spleen‐activated Rho‐kinase pathway in rats with secondary biliary cirrhosis. Hepatology Research. 42(10). 1039–1047. 14 indexed citations

Onimaru, Manabu, Kenoki Ohuchida, Satoshi Ieiri, et al.. (2011). CLINICAL EVALUATION OF CYBERDOME, A NOVEL THREE-DIMENSIONAL DOME-SHAPED DISPLAY SYSTEM, FOR ENDOSCOPIC SURGERY. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 72(7). 1673–1677.

Yoshida, Daisuke, Tomohiko Akahoshi, Hirofumi Kawanaka, et al.. (2011). Roles of vascular endothelial growth factor and endothelial nitric oxide synthase during revascularization and regeneration after partial hepatectomy in a rat model. Surgery Today. 41(12). 1622–1629. 17 indexed citations

Kobayashi, Yo, Hiroki Watanabe, Kazutaka Toyoda, et al.. (2010). 2A1-B23 A Surgical Robot with Vision Control for Single Port Endoscopic Surgery. The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec). 2010(0). _2A1–B23_1. 3 indexed citations

Uehara, Hideo, Hirofumi Kawanaka, Tomohiko Akahoshi, et al.. (2009). The Feasibility and Effectiveness of a Hand-assisted Laparoscopic Splenectomy for Hypersplenism in Patients After Living-donor Liver Transplantation. Surgical Laparoscopy Endoscopy & Percutaneous Techniques. 19(6). 484–487. 8 indexed citations

10.

Akahoshi, Tomohiko, Makoto Hashizume, Morimasa Tomikawa, et al.. (2008). Long‐term results of balloon‐occluded retrograde transvenous obliteration for gastric variceal bleeding and risky gastric varices: A 10‐year experience. Journal of Gastroenterology and Hepatology. 23(11). 1702–1709. 106 indexed citations

11.

Hashizume, Makoto, Morimasa Tomikawa, Tomohiko Akahoshi, et al.. (2002). Laparoscopic splenectomy for portal hypertension.. PubMed. 49(45). 847–52. 47 indexed citations

12.

Hashizume, Makoto, Mitsuo Shimada, Morimasa Tomikawa, et al.. (2002). Early experiences of endoscopic procedures in general surgery assisted by a computer-enhanced surgical system. Surgical Endoscopy. 16(8). 1187–1191. 212 indexed citations

13.

Tomikawa, Morimasa, Makoto Hashizume, Tomohiko Akahoshi, et al.. (2002). Effects of splenectomy on liver volume and prognosis of cirrhosis in patients with esophageal varices¹. Journal of Gastroenterology and Hepatology. 17(1). 77–80. 30 indexed citations

14.

Yoshino, Ichiro, Makoto Hashizume, Mitsuo Shimada, et al.. (2001). Thoracoscopic thymomectomy with the da Vinci computer-enhanced surgical system. Journal of Thoracic and Cardiovascular Surgery. 122(4). 783–785. 97 indexed citations

15.

Tomikawa, Morimasa, Jonathan D. Kaunitz, Hirofumi Kawanaka, et al.. (2000). New insights into impairment of mucosal defense in portal hypertensive gastric mucosa. Journal of Gastrointestinal Surgery. 4(5). 458–463. 12 indexed citations

16.

Tsugawa, Kouji, Makoto Hashizume, Fumiaki Kishihara, et al.. (1999). A selective cyclo‐oxygenase‐2 inhibitor, NS‐398, may improve portal hypertension without inducing gastric mucosal injury. Journal of Gastroenterology and Hepatology. 14(7). 642–651. 23 indexed citations

17.

Tomikawa, Morimasa, Hongtao Wang, Michael K. Jones, et al.. (1999). Reduced Adrenomedullin Expression in Gastric Mucosa of Portal Hypertensive Rats After Ethanol-Induced Injury. Annals of Surgery. 230(1). 38–38. 8 indexed citations

18.

Ohta, Masayuki, et al.. (1998). Tumor necrosis factor α regulates nitric oxide synthase expression in portal hypertensive gastric mucosa of rats. Hepatology. 27(4). 906–913. 34 indexed citations

19.

Hashizume, Makoto, Masayuki Ohta, Fumiaki Kishihara, et al.. (1996). Laparoscopic splenectomy for idiopathic thrombocytopenic purpura: comparison of laparoscopic surgery and conventional open surgery.. Surgical Laparoscopy Endoscopy & Percutaneous Techniques. 6(2). 129–135. 39 indexed citations

20.

Kitano, Seigo, K. Ueno, Makoto Hashizume, et al.. (1993). Laparoscopic oversewing of a bleeding Mallory-Weiss tear under endoscopic guidance. Surgical Endoscopy. 7(5). 445–446. 4 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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