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Researcher · Nihon University · Japan

Ryoji Ichijima

Ryoji Ichijima publishes mostly in Pulmonary and Respiratory Medicine, Surgery and Gastroenterology, on topics such as Gastric Cancer Management and Outcomes, Gastrointestinal Tumor Research and Treatment and Anesthesia and Sedative Agents.

ORCID 0000-0002-5977-3660 OpenAlex
World rank
#1,398,343
of 7,710,434 ranked researchers
Rank in Japan
#21,647
of 383,136
Works
83
Citations
767
Citations per work
9.2
h-index
12
i10-index 15Top 42% in Pulmonary and Respiratory Medicine
Ryoji Ichijima

What does Ryoji Ichijima research?

Ryoji Ichijima's work is mostly in Medicine (91%).

Health Sciences: 76 works · 91.2% of their workMedicine: 76 works · 91.2% of their workPulmonary and Respiratory Medicine: 23 works · 28.2% of their workSurgery: 22 works · 26.1% of their workGastroenterology: 13 works · 15.1% of their workOncology: 8 works · 9.2% of their workAnesthesiology and Pain Medicine: 7 works · 8.8% of their workInfectious Diseases: 3 works · 3.8% of their workEverything else: 7 works · 8.8% of their workTHEIR WORKRyoji Ichijima83works
Health Sciences91%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Medicine7691.2%
  2. Everything else78.8%
  1. 1Pulmonary and Respiratory Medicine28% of their works
  2. 2Surgery26% of their works
  3. 3Gastroenterology15% of their works
  4. 4Oncology9% of their works
  5. 5Anesthesiology and Pain Medicine9% of their works
  6. 6Infectious Diseases4% of their works

Research topics

Which keywords describe Ryoji Ichijima's research?

The keywords of their largest research topics: Endoscopic Resection, Gastric Cancer, Chemotherapy, Molecular Characterization, Guidelines, Prevention, Imatinib Mesylate and Sunitinib.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most. The words come from the keyword list OpenAlex gives each topic, not from the text of the papers, so a word can appear that none of the papers uses.

All 20 words, with their numbers
  1. Endoscopic Resection532 topics
  2. Gastric Cancer492 topics
  3. Chemotherapy401 topic
  4. Molecular Characterization401 topic
  5. Guidelines282 topics
  6. Prevention282 topics
  7. Imatinib Mesylate231 topic
  8. Sunitinib231 topic
  9. Anesthesia191 topic
  10. Colorectal Cancer191 topic
  11. Screening191 topic
  12. Sedation191 topic
  13. Lung Tumors181 topic
  14. Metastatic Carcinomas181 topic
  15. Esophageal Carcinoma131 topic
  16. Preoperative Chemoradiotherapy131 topic
  17. Helicobacter pylori91 topic
  18. Inflammation91 topic
  19. Postoperative Nausea91 topic
  20. Vomiting Prevention91 topic

Where does Ryoji Ichijima work?

Ryoji Ichijima's main affiliation in the publication record is Nihon University, Japan.

How many publications and citations does Ryoji Ichijima have?

OpenAlex counts 83 works and 767 citations for Ryoji Ichijima, an h-index of 12, ranking #1,398,343 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised citation excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.

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