Kyoji Hirai

59 papers and 794 indexed citations i.

About

Kyoji Hirai is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Rheumatology. According to data from OpenAlex, Kyoji Hirai has authored 59 papers receiving a total of 794 indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Pulmonary and Respiratory Medicine, 26 papers in Surgery and 9 papers in Rheumatology. Recurrent topics in Kyoji Hirai’s work include Lung Cancer Diagnosis and Treatment (19 papers), Pleural and Pulmonary Diseases (19 papers) and Tracheal and airway disorders (18 papers). Kyoji Hirai is often cited by papers focused on Lung Cancer Diagnosis and Treatment (19 papers), Pleural and Pulmonary Diseases (19 papers) and Tracheal and airway disorders (18 papers). Kyoji Hirai collaborates with scholars based in Japan, China and Italy. Kyoji Hirai's co-authors include Jitsuo Usuda, Kiyoshi Koizumi, Kazuo Shimizu, Shigeo Tanaka, Tomomi Hirata, Iwao Mikami, Shuji Haraguchi, Gorô Asano, Daisuke Okada and Munehiro Yokoyama and has published in prestigious journals such as The Annals of Thoracic Surgery, Human Pathology and Biomedicine & Pharmacotherapy.

In The Last Decade

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

Fields of papers citing papers by Kyoji Hirai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Kyoji Hirai

Since Specialization
Citations

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