Takashi Hirai

359 papers and 6.8k indexed citations i.

About

Takashi Hirai is a scholar working on Surgery, Pathology and Forensic Medicine and Oncology. According to data from OpenAlex, Takashi Hirai has authored 359 papers receiving a total of 6.8k indexed citations (citations by other indexed papers that have themselves been cited), including 177 papers in Surgery, 102 papers in Pathology and Forensic Medicine and 75 papers in Oncology. Recurrent topics in Takashi Hirai’s work include Spine and Intervertebral Disc Pathology (71 papers), Spinal Fractures and Fixation Techniques (53 papers) and Cervical and Thoracic Myelopathy (51 papers). Takashi Hirai is often cited by papers focused on Spine and Intervertebral Disc Pathology (71 papers), Spinal Fractures and Fixation Techniques (53 papers) and Cervical and Thoracic Myelopathy (51 papers). Takashi Hirai collaborates with scholars based in Japan, United States and Germany. Takashi Hirai's co-authors include Tomoyuki Kato, Yukihide Kanemitsu, Atsushi Okawa, Yasuhiro Kodera, Yoshitaka Yamamura, Kenzo Yasui, Toshitaka Yoshii, Takeshi Morimoto, Akihito Torii and Yasuhiro Shimizu and has published in prestigious journals such as Journal of Clinical Oncology, Cancer and Annals of Surgery.

In The Last Decade

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

Fields of papers citing papers by Takashi Hirai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Takashi Hirai

Since Specialization
Citations

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

Explore authors with similar magnitude of impact

Rankless by CCL
2025