Kouhei Nii

75 papers and 529 indexed citations i.

About

Kouhei Nii is a scholar working on Neurology, Pulmonary and Respiratory Medicine and Epidemiology. According to data from OpenAlex, Kouhei Nii has authored 75 papers receiving a total of 529 indexed citations (citations by other indexed papers that have themselves been cited), including 49 papers in Neurology, 39 papers in Pulmonary and Respiratory Medicine and 27 papers in Epidemiology. Recurrent topics in Kouhei Nii’s work include Intracranial Aneurysms: Treatment and Complications (41 papers), Cerebrovascular and Carotid Artery Diseases (35 papers) and Acute Ischemic Stroke Management (21 papers). Kouhei Nii is often cited by papers focused on Intracranial Aneurysms: Treatment and Complications (41 papers), Cerebrovascular and Carotid Artery Diseases (35 papers) and Acute Ischemic Stroke Management (21 papers). Kouhei Nii collaborates with scholars based in Japan and United States. Kouhei Nii's co-authors include Kiyoshi Kazekawa, Hiroshi Aikawa, Masanori Tsutsumi, Minoru Iko, Masanari Onizuka, Tomonobu Kodama, Kimiya Sakamoto, Akira Tanaka, Masahiro Tsutsumi and Yoshihisa Matsumoto and has published in prestigious journals such as Neurosurgery, Medicine and American Journal of Neuroradiology.

In The Last Decade

Co-authorship network of co-authors of Kouhei Nii i

Fields of papers citing papers by Kouhei Nii

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Kouhei Nii

Since Specialization
Citations

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