Toru Koyama

53 papers and 873 indexed citations i.

About

Toru Koyama is a scholar working on Surgery, Neurology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Toru Koyama has authored 53 papers receiving a total of 873 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Surgery, 16 papers in Neurology and 14 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Toru Koyama’s work include Intracranial Aneurysms: Treatment and Complications (11 papers), Cerebrovascular and Carotid Artery Diseases (8 papers) and Anatomy and Medical Technology (6 papers). Toru Koyama is often cited by papers focused on Intracranial Aneurysms: Treatment and Complications (11 papers), Cerebrovascular and Carotid Artery Diseases (8 papers) and Anatomy and Medical Technology (6 papers). Toru Koyama collaborates with scholars based in Japan, United States and United Kingdom. Toru Koyama's co-authors include Yasuo Morishita, Susumu Ohwada, Izumi Takeyoshi, Tetsushi Ogawa, Hiroshi Okudera, Daisuke Yoshinari, Shigeaki Kobayashi, Susumu Kawate, Koshi Matsumoto and Naoki Tomizawa and has published in prestigious journals such as Annals of Surgery, Journal of neurosurgery and Critical Care Medicine.

In The Last Decade

Co-authorship network of co-authors of Toru Koyama i

Fields of papers citing papers by Toru Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Toru Koyama

Since Specialization
Citations

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