Ryoji Ichijima

35 papers and 374 indexed citations i.

About

Ryoji Ichijima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, Ryoji Ichijima has authored 35 papers receiving a total of 374 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Surgery, 22 papers in Pulmonary and Respiratory Medicine and 18 papers in Gastroenterology. Recurrent topics in Ryoji Ichijima’s work include Gastric Cancer Management and Outcomes (18 papers), Metastasis and carcinoma case studies (10 papers) and Gastrointestinal Tumor Research and Treatment (10 papers). Ryoji Ichijima is often cited by papers focused on Gastric Cancer Management and Outcomes (18 papers), Metastasis and carcinoma case studies (10 papers) and Gastrointestinal Tumor Research and Treatment (10 papers). Ryoji Ichijima collaborates with scholars based in Japan and United States. Ryoji Ichijima's co-authors include Hisatomo Ikehara, Sho Suzuki, Chika Kusano, Takuji Gotoda, Masashi Kawamura, Hirotaka Ito, Koichi Kawabe, Motoki Ohyauchi, Yohei Ogata and Masahiko Ohtaka and has published in prestigious journals such as Gastroenterology, Gut and Scientific Reports.

In The Last Decade

Co-authorship network of co-authors of Ryoji Ichijima i

Fields of papers citing papers by Ryoji Ichijima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Ryoji Ichijima

Since Specialization
Citations

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