Hiroshi Ohyama
- Co-authors
- Rintaro MikataHitoshi MochizukiMasao OmataYosuke HirotsuNaoya KatoShin YasuiToshio OyamaKenji Amemiya
- Topics
- Pancreatic and Hepatic Oncology Research (28 papers)Gallbladder and Bile Duct Disorders (22 papers)Pediatric Hepatobiliary Diseases and Treatments (12 papers)
- Cited by
- HepatologyOncologyCancer Research
- Journals
- The LancetCancerScientific Reports
- Partner nations
- JapanUnited StatesGermany
In The Last Decade
Hiroshi Ohyama
48 papers receiving 369 citations
Peers
Comparison fields: 5 of 60
- Surgery 187
- Oncology 165
- Pulmonary and Respiratory Medicine 128
- Cancer Research 72
- Molecular Biology 54
Countries citing papers authored by Hiroshi Ohyama
This map shows the geographic impact of Hiroshi Ohyama'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 Hiroshi Ohyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroshi Ohyama more than expected).
Fields of papers citing papers by Hiroshi Ohyama
This network shows the impact of papers produced by Hiroshi Ohyama. 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 Hiroshi Ohyama. The network helps show where Hiroshi Ohyama may publish in the future.
Co-authorship network of co-authors of Hiroshi Ohyama
This figure shows the co-authorship network connecting the top 25 collaborators of Hiroshi Ohyama. A scholar is included among the top collaborators of Hiroshi Ohyama 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 Hiroshi Ohyama. Hiroshi Ohyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 0 | |
| 2 | 1 | |
| 3 | 1 | |
| 4 | 4 | |
| 5 | 1 | |
| 6 | 4 | |
| 7 | 1 | |
| 8 | 18 | |
| 9 | 4 | |
| 10 | 1 | |
| 11 | 0 | |
| 12 | 4 | |
| 13 | 0 | |
| 14 | 14 | |
| 15 | 0 | |
| 16 | 8 | |
| 17 | 26 | |
| 18 | 12 | |
| 19 | 15 | |
| 20 | 22 |
About Hiroshi Ohyama
Hiroshi Ohyama is a scholar working on Oncology, Surgery and Pulmonary and Respiratory Medicine, having authored 58 papers that have together received 378 indexed citations. Recurring topics across this work include Pancreatic and Hepatic Oncology Research (28 papers), Gallbladder and Bile Duct Disorders (22 papers) and Pediatric Hepatobiliary Diseases and Treatments (12 papers). The work is most often cited by research in Hepatology (49 citations), Oncology (165 citations) and Cancer Research (72 citations). Hiroshi Ohyama has collaborated with scholars based in Japan, United States and Germany. Frequent co-authors include Rintaro Mikata, Hitoshi Mochizuki, Masao Omata, Yosuke Hirotsu, Naoya Kato, Shin Yasui, Toshio Oyama, Kenji Amemiya, Harutoshi Sugiyama and Toshio Tsuyuguchi. Their work appears in journals such as The Lancet, Cancer and Scientific Reports.
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.