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Researcher · National Cancer Center · United States

Keiichi Maruyama

Keiichi Maruyama publishes mostly in Pulmonary and Respiratory Medicine, Surgery and Oncology, on topics such as Gastric Cancer Management and Outcomes, Metastasis and carcinoma case studies and Gastrointestinal Tumor Research and Treatment.

OpenAlex
World rank
#1,046,860
of 7,710,434 ranked researchers
Rank in United States
#340,326
of 1,627,098
Works
109
Citations
4.9k
Citations per work
44.6
h-index
33
i10-index 51Top 7.1% in Pulmonary and Respiratory Medicine
Keiichi Maruyama

What does Keiichi Maruyama research?

Keiichi Maruyama's work is mostly in Medicine (92%).

Health Sciences: 100 works · 91.5% of their workMedicine: 100 works · 91.5% of their workPulmonary and Respiratory Medicine: 45 works · 40.9% of their workSurgery: 31 works · 28.3% of their workOncology: 11 works · 9.7% of their workGastroenterology: 10 works · 8.9% of their workEpidemiology: 3 works · 2.6% of their workRadiology, Nuclear Medicine and Imaging: 1 works · 1.1% of their workEverything else: 9 works · 8.5% of their workTHEIR WORKKeiichi Maruyama109works
Health Sciences92%

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. Medicine10091.5%
  2. Everything else98.5%
  1. 1Pulmonary and Respiratory Medicine41% of their works
  2. 2Surgery28% of their works
  3. 3Oncology10% of their works
  4. 4Gastroenterology9% of their works
  5. 5Epidemiology3% of their works
  6. 6Radiology, Nuclear Medicine and Imaging1% of their works

Research topics

Which keywords describe Keiichi Maruyama's research?

The keywords of their largest research topics: Gastric Cancer, Endoscopic Resection, Chemotherapy, Lymph Node Dissection, Molecular Characterization, Lung Tumors, Metastatic Carcinomas and Prognostic Factors.

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 23 words, with their numbers
  1. Gastric Cancer842 topics
  2. Endoscopic Resection752 topics
  3. Chemotherapy722 topics
  4. Lymph Node Dissection651 topic
  5. Molecular Characterization651 topic
  6. Lung Tumors331 topic
  7. Metastatic Carcinomas331 topic
  8. Prognostic Factors322 topics
  9. Surgical Management322 topics
  10. Epidemiology212 topics
  11. Imatinib Mesylate211 topic
  12. Sunitinib211 topic
  13. Helicobacter pylori191 topic
  14. Inflammation191 topic
  15. Neoadjuvant Therapy172 topics
  16. Biliary Tract Cancer111 topic
  17. Cholangiocarcinoma111 topic
  18. Endoscopic Stenting101 topic
  19. Esophageal Carcinoma101 topic
  20. Esophageal Perforation101 topic
  21. Preoperative Chemoradiotherapy101 topic
  22. Pancreatic Cancer71 topic
  23. Surgical Complications71 topic

Where does Keiichi Maruyama work?

Keiichi Maruyama's main affiliation in the publication record is National Cancer Center, United States.

How many publications and citations does Keiichi Maruyama have?

OpenAlex counts 109 works and 4,866 citations for Keiichi Maruyama, an h-index of 33, ranking #1,046,860 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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