Ryoichi Shimizu

29 papers and 227 indexed citations i.

About

Ryoichi Shimizu is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Ryoichi Shimizu has authored 29 papers receiving a total of 227 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Surgery, 13 papers in Pulmonary and Respiratory Medicine and 11 papers in Oncology. Recurrent topics in Ryoichi Shimizu’s work include Colorectal Cancer Treatments and Studies (5 papers), Cancer therapeutics and mechanisms (4 papers) and Gastric Cancer Management and Outcomes (4 papers). Ryoichi Shimizu is often cited by papers focused on Colorectal Cancer Treatments and Studies (5 papers), Cancer therapeutics and mechanisms (4 papers) and Gastric Cancer Management and Outcomes (4 papers). Ryoichi Shimizu collaborates with scholars based in Japan, United States and Greece. Ryoichi Shimizu's co-authors include Vladimir V. Ulyanov, Yasunori Fujikoshi, Yasunori Yoshimoto, Yoshitsugu Sugio, Hiroko Tanaka, S. Nomura, Masaaki Oka, Shigefumi Yoshino, Shoichi Hazama and Hiroshi Kondo and has published in prestigious journals such as Journal of Clinical Oncology, Annals of Oncology and European Journal of Cancer.

In The Last Decade

Co-authorship network of co-authors of Ryoichi Shimizu i

Fields of papers citing papers by Ryoichi Shimizu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Ryoichi Shimizu

Since Specialization
Citations

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