Hitoshi Koyanagi

440 total papers · 3.1k total citations
212 papers, 2.1k citations indexed

About

Hitoshi Koyanagi is a scholar working on Surgery, Cardiology and Cardiovascular Medicine and Biomedical Engineering. According to data from OpenAlex, Hitoshi Koyanagi has authored 212 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 114 papers in Surgery, 108 papers in Cardiology and Cardiovascular Medicine and 66 papers in Biomedical Engineering. Recurrent topics in Hitoshi Koyanagi’s work include Mechanical Circulatory Support Devices (61 papers), Cardiac Valve Diseases and Treatments (57 papers) and Cardiac Structural Anomalies and Repair (49 papers). Hitoshi Koyanagi is often cited by papers focused on Mechanical Circulatory Support Devices (61 papers), Cardiac Valve Diseases and Treatments (57 papers) and Cardiac Structural Anomalies and Repair (49 papers). Hitoshi Koyanagi collaborates with scholars based in Japan, Pakistan and United States. Hitoshi Koyanagi's co-authors include Masahiro Endo, Shigeyuki Aomi, A Hashimoto, Chisato Nojiri, M Hachida, Hiroshi Nishida, Masaya Kitamura, Yasuharu Noishiki, Osamu Tagusari and Kiyoharu Nakano and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and CHEST Journal.

In The Last Decade

Co-authorship network of co-authors of Hitoshi Koyanagi

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

Hitoshi Koyanagi

197 papers receiving 2.0k citations

Fields of papers citing papers by Hitoshi Koyanagi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hitoshi Koyanagi

Since Specialization
Citations

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