Hitoshi Ojima

141 total papers · 3.9k total citations
101 papers, 2.5k citations indexed

About

Hitoshi Ojima is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hitoshi Ojima has authored 101 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Surgery, 49 papers in Oncology and 46 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hitoshi Ojima’s work include Gastric Cancer Management and Outcomes (28 papers), Colorectal Cancer Treatments and Studies (24 papers) and Esophageal Cancer Research and Treatment (23 papers). Hitoshi Ojima is often cited by papers focused on Gastric Cancer Management and Outcomes (28 papers), Colorectal Cancer Treatments and Studies (24 papers) and Esophageal Cancer Research and Treatment (23 papers). Hitoshi Ojima collaborates with scholars based in Japan, United States and Greece. Hitoshi Ojima's co-authors include Hiroyuki Kuwano, Katsuhiko Tsukada, Tatsuya Miyazaki, Masanobu Nakajima, Yasuyuki Fukai, Minoru Fukuchi, Norihiro Masuda, Noboru Oriuchi, Makoto Sohda and Ryokuhei Manda and has published in prestigious journals such as The Lancet, Journal of Clinical Oncology and Water Research.

Co-authorship network of co-authors of Hitoshi Ojima

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

Hitoshi Ojima

88 papers receiving 2.4k citations

Fields of papers citing papers by Hitoshi Ojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hitoshi Ojima

Since Specialization
Citations

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

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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2026