Keita Hirai

45 papers and 623 indexed citations i.

About

Keita Hirai is a scholar working on Pulmonary and Respiratory Medicine, Physiology and Oncology. According to data from OpenAlex, Keita Hirai has authored 45 papers receiving a total of 623 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Pulmonary and Respiratory Medicine, 16 papers in Physiology and 7 papers in Oncology. Recurrent topics in Keita Hirai’s work include Asthma and respiratory diseases (16 papers), Chronic Obstructive Pulmonary Disease (COPD) Research (11 papers) and Respiratory and Cough-Related Research (6 papers). Keita Hirai is often cited by papers focused on Asthma and respiratory diseases (16 papers), Chronic Obstructive Pulmonary Disease (COPD) Research (11 papers) and Respiratory and Cough-Related Research (6 papers). Keita Hirai collaborates with scholars based in Japan, United States and Sweden. Keita Hirai's co-authors include Kunihiko Itoh, Toshihiro Shirai, Daiki Tsuji, Kazuyuki Inoue, Yasuhiro Gon, Hideki Hayashi, Shinya Uchida, Keizo Umegaki, Junya Hatanaka and Masayuki Suzuki and has published in prestigious journals such as Clinical Pharmacology & Therapeutics, Medicine and Allergy.

In The Last Decade

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

Fields of papers citing papers by Keita Hirai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Keita Hirai

Since Specialization
Citations

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