Nobuhiko Hirai

30 papers and 897 indexed citations i.

About

Nobuhiko Hirai is a scholar working on Radiology, Nuclear Medicine and Imaging, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Nobuhiko Hirai has authored 30 papers receiving a total of 897 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Radiology, Nuclear Medicine and Imaging, 10 papers in Surgery and 10 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Nobuhiko Hirai’s work include Cardiac Imaging and Diagnostics (15 papers), Advanced X-ray and CT Imaging (9 papers) and Advanced MRI Techniques and Applications (7 papers). Nobuhiko Hirai is often cited by papers focused on Cardiac Imaging and Diagnostics (15 papers), Advanced X-ray and CT Imaging (9 papers) and Advanced MRI Techniques and Applications (7 papers). Nobuhiko Hirai collaborates with scholars based in Japan. Nobuhiko Hirai's co-authors include Katsuhide Ito, Jun Horiguchi, Hideya Yamamoto, Nobuoki Kohno, Toshiro Kitagawa, Noriaki Matsuura, Chikako Fujioka, Masashi Hieda, Masao Kiguchi and Toshihiro Tachikake and has published in prestigious journals such as Radiology, American Heart Journal and American Journal of Roentgenology.

In The Last Decade

Co-authorship network of co-authors of Nobuhiko Hirai i

Fields of papers citing papers by Nobuhiko Hirai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Nobuhiko Hirai

Since Specialization
Citations

This map shows the geographic impact of Nobuhiko Hirai'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 Nobuhiko Hirai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Nobuhiko Hirai 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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2025