Hajime Otsu

63 total papers · 711 total citations
35 papers, 490 citations indexed

About

Hajime Otsu is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hajime Otsu has authored 35 papers receiving a total of 490 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Surgery, 14 papers in Oncology and 12 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hajime Otsu’s work include Esophageal and GI Pathology (6 papers), Gastric Cancer Management and Outcomes (6 papers) and Esophageal Cancer Research and Treatment (6 papers). Hajime Otsu is often cited by papers focused on Esophageal and GI Pathology (6 papers), Gastric Cancer Management and Outcomes (6 papers) and Esophageal Cancer Research and Treatment (6 papers). Hajime Otsu collaborates with scholars based in Japan and United States. Hajime Otsu's co-authors include Eiji Oki, Koji Ando, Yoshihiko Maehara, Masaru Morita, Hiroyuki Kawano, Hiroshi Saeki, Yasushi Iwasaki, Hiroyuki Kitao, Hiroshi Saeki and Yasuo Tsuda and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Clinical Oncology and Scientific Reports.

Co-authorship network of co-authors of Hajime Otsu

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

Hajime Otsu

30 papers receiving 483 citations

Fields of papers citing papers by Hajime Otsu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hajime Otsu

Since Specialization
Citations

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