Keiji Ohata

24 papers and 331 indexed citations i.

About

Keiji Ohata is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Epidemiology. According to data from OpenAlex, Keiji Ohata has authored 24 papers receiving a total of 331 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Surgery, 12 papers in Pulmonary and Respiratory Medicine and 5 papers in Epidemiology. Recurrent topics in Keiji Ohata’s work include Transplantation: Methods and Outcomes (12 papers), Organ Transplantation Techniques and Outcomes (8 papers) and Lung Cancer Diagnosis and Treatment (5 papers). Keiji Ohata is often cited by papers focused on Transplantation: Methods and Outcomes (12 papers), Organ Transplantation Techniques and Outcomes (8 papers) and Lung Cancer Diagnosis and Treatment (5 papers). Keiji Ohata collaborates with scholars based in Japan and United States. Keiji Ohata's co-authors include Tatsuo Nakagawa, Hitoshi Igai, Tomoaki Matsuoka, Norihito Okumura, Harald C. Ott, Kotaro Kameyama, Mamoru Takahashi, Akihiro Aoyama, Kyoko Hijiya and Hideki Motoyama and has published in prestigious journals such as Transplantation, Journal of Thoracic and Cardiovascular Surgery and The Annals of Thoracic Surgery.

In The Last Decade

Co-authorship network of co-authors of Keiji Ohata i

Fields of papers citing papers by Keiji Ohata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Keiji Ohata

Since Specialization
Citations

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