Masaaki Oka

2.0k total citations
103 papers, 1.4k citations indexed

About

Masaaki Oka is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Masaaki Oka has authored 103 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Surgery, 26 papers in Oncology and 19 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Masaaki Oka's work include Pancreatic and Hepatic Oncology Research (10 papers), Pancreatitis Pathology and Treatment (9 papers) and Genetic factors in colorectal cancer (7 papers). Masaaki Oka is often cited by papers focused on Pancreatic and Hepatic Oncology Research (10 papers), Pancreatitis Pathology and Treatment (9 papers) and Genetic factors in colorectal cancer (7 papers). Masaaki Oka collaborates with scholars based in Japan, United States and Taiwan. Masaaki Oka's co-authors include Norio Iizuka, Takao Tamesa, Shoichi Hazama, Akira Tangoku, Atsunori Oga, Kazuhiko Sakamoto, Yoshihiko Hamamoto, Toshihiro Abe, Toshimasa Okada and Tomio Ueno and has published in prestigious journals such as Journal of Clinical Oncology, Cancer and Cancer Research.

In The Last Decade

Masaaki Oka

93 papers receiving 1.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masaaki Oka Japan 22 483 474 396 289 195 103 1.4k
Hiroyuki Okuda Japan 22 621 1.3× 712 1.5× 252 0.6× 405 1.4× 251 1.3× 108 1.7k
Antonio Taddei Italy 29 750 1.6× 578 1.2× 455 1.1× 401 1.4× 187 1.0× 141 2.8k
Manabu Kaneko Japan 24 421 0.9× 757 1.6× 514 1.3× 309 1.1× 272 1.4× 118 1.7k
Seongjoon Park South Korea 25 600 1.2× 456 1.0× 377 1.0× 295 1.0× 177 0.9× 88 2.2k
Kenji Matsuda Japan 24 446 0.9× 862 1.8× 587 1.5× 376 1.3× 186 1.0× 123 1.9k
Alexey V. Sorokin United States 22 1.3k 2.7× 679 1.4× 219 0.6× 222 0.8× 353 1.8× 53 2.2k
Masahiro Ito Japan 25 639 1.3× 496 1.0× 839 2.1× 451 1.6× 89 0.5× 126 2.1k
Qian Kang China 20 683 1.4× 242 0.5× 421 1.1× 135 0.5× 282 1.4× 77 1.7k

Countries citing papers authored by Masaaki Oka

Since Specialization
Citations

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

Fields of papers citing papers by Masaaki Oka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masaaki Oka

This figure shows the co-authorship network connecting the top 25 collaborators of Masaaki Oka. A scholar is included among the top collaborators of Masaaki Oka 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 Masaaki Oka. Masaaki Oka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Oka, Masaaki, et al.. (2015). Fairness and False-Name Manipulations in Randomized Cake Cutting. Adaptive Agents and Multi-Agents Systems. 2. 909–917. 1 indexed citations
2.
Oka, Masaaki, et al.. (2014). Optimal false-name-proof single-item redistribution mechanisms. Adaptive Agents and Multi-Agents Systems. 1. 221–228. 4 indexed citations
3.
Kaino, Seiji, et al.. (2014). A Case of Solid Pseudopapillary Neoplasm of the Pancreas with Massive Central Calcification. 63(2). 153–159. 1 indexed citations
4.
Shindo, Yoshitaro, Shoichi Hazama, Shinsuke Kanekiyo, et al.. (2013). Intestinal Prolapse Through the Drain Site After Laparoscopy-Assisted Low Anterior Resection: A Case Report. Nihon Gekakei Rengo Gakkaishi (Journal of Japanese College of Surgeons). 38(4). 815–819.
5.
Tsunedomi, Ryouichi, et al.. (2012). Personalized Chemotherapy for Colorectal Cancer based on the genome information( Medical Care and Diagnosis). Journal of the Japan Society of Applied Electromagnetics and Mechanics. 20(3). 589–593.
6.
Matsukuma, Satoshi, et al.. (2012). A case of fulminant clostridium difficile infection following colectomy for descending colon cancer. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 73(6). 1465–1471. 1 indexed citations
7.
Hashimoto, Shinichi, Ryo Tanabe, Takeshi Okamoto, et al.. (2011). A Case of Mucinous Cystadenoma of the Appendix with Diverticulum.. 60(4). 117–121.
8.
Yoshimura, Kiyoshi, Kristen F. Meckel, Christina Y. Chia, et al.. (2009). Integrin α2 Mediates Selective Metastasis to the Liver. Cancer Research. 69(18). 7320–7328. 69 indexed citations
9.
Nishimura, Taku, et al.. (2009). In Vivo Motility Evaluation of the Grafted Gastric Wall with Small Intestinal Submucosa. Tissue Engineering Part A. 16(5). 1761–1768. 10 indexed citations
10.
Shindo, Yoshitaro, et al.. (2009). A Case of Torsion of the Gallbladder Diagnosed Preoperatively and Treated with Laparoscopic Cholecystectomy. 58(6). 255–259. 1 indexed citations
11.
Tamesa, Takao, Norio Iizuka, Naohide Mori, et al.. (2009). High serum levels of vascular endothelial growth factor after hepatectomy are associated with poor prognosis in hepatocellular carcinoma.. PubMed. 56(93). 1122–6. 18 indexed citations
12.
Iida, Michihisa, Shigefumi Yoshino, Tomio Ueno, Kazuhiko Sakamoto, & Masaaki Oka. (2008). A CASE OF PROTEIN LOSING GASTRIC CANCER. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 69(2). 370–374. 2 indexed citations
13.
Ikeda, Yukio, et al.. (2008). A Case of Duodenal Stenosis due to a Seed of Loquat. The Japanese Journal of Gastroenterological Surgery. 41(11). 1935–1940.
14.
Furuya, Tomoko, Atsunori Oga, Shigeto Kawauchi, et al.. (2007). Relation of invasive ductal carcinoma by chromosome instability and breast cancer-related markers. The Journal of the Japanese Society of Clinical Cytology. 46(6). 332–337. 2 indexed citations
15.
Nagashima, Yukiko, et al.. (2005). [Evaluation of host immunity and side effects in breast cancer patients treated with adjuvant chemotherapy (FEC therapy)].. PubMed. 32(11). 1550–2. 9 indexed citations
16.
Mori, Naohide, et al.. (1999). A Case Report of Superior Mesenteric Artery Syndrome after abdominoperineal Excision of Rectal Cancer.. The Japanese Journal of Gastroenterological Surgery. 32(12). 2689–2693. 1 indexed citations
17.
Nakamura, Masayuki, Yuichiro Hamanaka, Shigefumi Yoshino, et al.. (1990). A case of limy bile associated with multiple carcinomas of the gallbladder.. The Japanese Journal of Gastroenterological Surgery. 23(11). 2653–2657. 1 indexed citations
18.
Murakami, T, et al.. (1987). Studies on intraluminal esophageal manometry for various esophageal disorders.. The Japanese Journal of Gastroenterological Surgery. 20(3). 705–713.
19.
Oka, Masaaki, et al.. (1986). . The Japanese Journal of Gastroenterological Surgery. 19(10). 2092–2095.
20.
Oka, Masaaki, et al.. (1984). Surgical treatment of the esophageal cancer with dysfunction of another organs in our ward.. The Japanese Journal of Gastroenterological Surgery. 17(10). 1922–1925. 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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