Ryuichi Hirayama

1.6k citations
58 papers · 1.2k indexed · 1 hit paper · h-index 12
Topics
Meningioma and schwannoma management (15 papers)Glioma Diagnosis and Treatment (13 papers)Neurofibromatosis and Schwannoma Cases (7 papers)
Journals
Journal of Clinical OncologySHILAP Revista de lepidopterologíaPLoS ONE
Partner nations
JapanUnited States

In The Last Decade

Ryuichi Hirayama

48 papers receiving 1.1k citations

Hit Papers

Total colectomy, mucosal proctectomy, and ileoanal anasto...19802026199520101980100200300400

Peers

Ryuichi Hirayama
Comparison fields: 5 of 84
  • Oncology 534
  • Surgery 487
  • Pulmonary and Respiratory Medicine 295
  • Molecular Biology 234
  • Pathology and Forensic Medicine 210
Replace Michael Bremer with:
Michael Bremer Germany
Yosuke Yamakawa Japan
Carol Wong Hong Kong
Byung Wook Min South Korea
Kazumasa Nakamura Japan
Yoshitaka Naito Japan
Takeaki Fukuda Japan
Danuta Perek Poland
Y Esaki Japan
Monica Girotra United States
Ryuichi Hirayama relative to Michael Bremer Germany Michael Bremer's profile →
Citations per field
00.5×
Michael Bremer · 1×
Citations per year

Countries citing papers authored by Ryuichi Hirayama

Since Specialization
Citations

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

Fields of papers citing papers by Ryuichi Hirayama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryuichi Hirayama

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuichi Hirayama. A scholar is included among the top collaborators of Ryuichi Hirayama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryuichi Hirayama. Ryuichi Hirayama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
#WorkIndexed citations
1 2
2 0
3 0
4 1
5 0
6 8
7 0
8 19
9 2
10 3
11 5
12 1
13 4
14 2
15 75
16 111
17 20
18 17
19
Histologic features of gastric cancer in relation to patterns of spread.
7
20 3

About Ryuichi Hirayama

Ryuichi Hirayama is a scholar working on Genetics, Neurology and Neurology, having authored 58 papers that have together received 1.2k indexed citations. Recurring topics across this work include Meningioma and schwannoma management (15 papers), Glioma Diagnosis and Treatment (13 papers) and Neurofibromatosis and Schwannoma Cases (7 papers). The work is most often cited by research in Oncology (534 citations), Pathology and Forensic Medicine (210 citations) and Surgery (487 citations). Ryuichi Hirayama has collaborated with scholars based in Japan and United States. Frequent co-authors include Shigeo Sawai, M Imajo, J. Utsunomiya, Satoshi Matsuo, Takeo Iwama∥, K. Yaegashi, Wataru Ichikawa, Zenro Nihei, Yoshinori Shirota and Yosuke Sasaki. Their work appears in journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and PLoS ONE.

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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