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Hospital / health system · Kumamoto · Japan

Kumamoto City Hospital

In research, Kumamoto City Hospital stands highest in Medicine (#9,522 of 10,443 worldwide) and Health Sciences (#11,158 of 11,982 worldwide), 2022–2025. Relative to its size it is most specialised in Surgery — Surgery is 8.9× its share of world research.

cityhosp-kumamoto.jpROR OpenAlex
World rank, 2022–2025
#24,909
of 28,054 · #29,977 all time
Rank in Japan
#852
of 1,070
Research works
782
▲ 5% vs 2013–17
Citations
21k
26.3 per fractional work
Top-10% rate
6.1%
record average 16.5%
Open access
45%
world 28%

What is Kumamoto City Hospital known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
MedicineField #9,522 of 10,443 5.5%91 #11652
Health SciencesDomain #11,158 of 11,982 6.2%97 #13607

Each strip is that field’s whole ranked pool, with the notch where Kumamoto City Hospital sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does Kumamoto City Hospital specialise in?

Where its research is concentrated relative to its size: Surgery takes 8.9× the share of its output that it takes of world research.

  1. SurgerySubfield · 23.7 works8.9×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.09× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.98× its world share, 6 worksBiochemistry, Geneti…Immunology and Microbiology: 1.84× its world share, 2 worksImmunology and Micro…Neuroscience: 0.98× its world share, 2 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.41× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.56× its world share, 1 worksChemistryComputer Science: 0.08× its world share, 1 worksComputer ScienceEngineering: 0.04× its world share, 1 worksEngineeringEnvironmental Science: 0.32× its world share, 2 worksEnvironmental SciencePhysics and Astronomy: 0.06× its world share, 0 worksPhysics and AstronomyDentistry: 1.36× its world share, 1 worksDentistryHealth Professions: 1.32× its world share, 4 worksHealth ProfessionsMedicine: 4.18× its world share, 91 worksMedicineNursing: 1.85× its world share, 1 worksNursingVeterinary: 0.43× its world share, 0 worksVeterinaryEconomics, Econometrics and Finance: 0.02× its world share, 0 worksEconomics, Econometr…Psychology: 0.41× its world share, 1 worksPsychologySocial Sciences: 0.02× its world share, 0 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Medicine, 4.2×. Every wedge is a field page.

Who are the top researchers at Kumamoto City Hospital?

Ranked on the composite score, Reiki Nishimura, Nobuyuki Arima and Tomofumi Osako lead among researchers whose main affiliation is Kumamoto City Hospital.

  1. 1 Reiki Nishimura Japan · #10,323 worldwide 1.4k citations · 48 works
  2. 2 Nobuyuki Arima Japan · #83,981 worldwide 1.4k citations · 23 works
  3. 3 Tomofumi Osako Japan · #158,337 worldwide 1.4k citations · 18 works
  4. 4 Yasuhiro Okumura Japan · #649,343 worldwide 12 citations · 23 works
  5. 5 Hiroyuki Tsuda Japan · #858,246 worldwide 34 citations · 21 works
  6. 6 Masakazu Matsuda Japan · #897,574 worldwide 13 citations · 21 works
  7. 7 Haruhiko Miyayama Japan · #899,498 worldwide 25 citations · 24 works
  8. 8 Ayaka Matsumoto Japan · #947,384 worldwide 32 citations · 18 works
  9. 9 Tadashi Terasaki Japan · #970,952 worldwide 24 citations · 29 works
  10. 10 Tesshin Ban Japan · #1,063,381 worldwide 4 citations · 22 works
All ranked researchers at Kumamoto City Hospital

Which keywords describe research at Kumamoto City Hospital?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Cholangiocarcinoma, Inflammation, Cholecystitis, ERCP, Epidemiology, Immunotherapy, Neoadjuvant Therapy and Prognosis.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Inflammation13▲ 5.4×24 topics
  2. Epidemiology13▲ 2.8×49 topics
  3. Cholangiocarcinoma11▲ 123×2 topics
  4. Cholecystitis9▲ 193×1 topic
  5. ERCP9▲ 193×1 topic
  6. Immunotherapy7▲ 9.0×14 topics
  7. Neoadjuvant Therapy7▲ 25×5 topics
  8. Prognosis6▲ 17×8 topics
  9. Aging6▲ 10×5 topics
  10. Chemotherapy6▲ 7.8×16 topics
  11. Diagnosis6▲ 5.8×20 topics
  12. Treatment6▲ 4.3×21 topics
  13. Surgical Management6▲ 12×11 topics
  14. Palliative Treatment6▲ 75×2 topics
  15. Tumor Microenvironment5▲ 11×6 topics
  16. Endoscopic Stenting5▲ 101×1 topic
  17. Esophageal Perforation5▲ 101×1 topic
  18. Quality of Life5▲ 3.2×17 topics
  19. Liver Transplantation5▲ 35×3 topics
  20. Muscle Mass5▲ 38×2 topics
  21. Complications5▲ 8.3×11 topics
  22. Pancreatic Cancer5▲ 38×2 topics
  23. Cancer Cachexia5▲ 46×1 topic
  24. Gemcitabine5▲ 56×1 topic
  25. Sarcopenia5▲ 46×1 topic
  26. Surgical Complications5▲ 50×1 topic
  27. Management4▲ 5.0×16 topics
  28. Elderly4▲ 15×4 topics
  29. Rehabilitation4▲ 9.2×6 topics
  30. Children4▲ 14×5 topics
  31. Alagille Syndrome4▲ 132×1 topic
  32. Biliary Atresia4▲ 132×1 topic
  33. Neurological Disorders4▲ 5.4×9 topics
  34. Nutritional Support3▲ 32×2 topics
  35. Heart Failure3▲ 6.3×9 topics
  36. Stroke3▲ 15×7 topics
  37. Elderly Patients3▲ 15×3 topics
  38. Radiotherapy3▲ 6.2×8 topics
  39. Physical Performance2▲ 24×2 topics
  40. CT Diagnosis2▲ 74×2 topics

Which research topics does Kumamoto City Hospital publish most on?

By volume in 2022–2025: Gallbladder and Bile Duct Disorders, Esophageal and GI Pathology, Nutrition and Health in Aging and Pancreatic and Hepatic Oncology Research.

Gallbladder and Bile Duc…9Gallbladder and Bile Duct Disorders: 9 fractional worksEsophageal and GI Pathology: 5 fractional worksNutrition and Health in Aging: 5 fractional worksPancreatic and Hepatic Oncology Research: 5 fractional worksPediatric Hepatobiliary Diseases and Treatments: 4 fractional worksStroke Rehabilitation an…2Stroke Rehabilitation and Recovery: 2 fractional worksDysphagia Assessment and Management: 2 fractional worksCholangiocarcinoma and Gallbladder Cancer Studies: 2 fractional worksBiliary and Gastrointestinal Fistulas: 2 fractional worksBreast Cancer Treatment Studies: 2 fractional works
Pulmonary and Respiratory MedicineSurgeryPhysiologyOncology3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Gallbladder and Bile Duct Disorders Pulmonary and Respiratory Medicine 9 works
  2. 2 Esophageal and GI Pathology Surgery 5 works
  3. 3 Nutrition and Health in Aging Physiology 5 works
  4. 4 Pancreatic and Hepatic Oncology Research Oncology 5 works
  5. 5 Pediatric Hepatobiliary Diseases and Treatments Surgery 4 works
  6. 6 Stroke Rehabilitation and Recovery Rehabilitation 2 works
  7. 7 Dysphagia Assessment and Management Speech and Hearing 2 works
  8. 8 Cholangiocarcinoma and Gallbladder Cancer Studies Surgery 2 works
  9. 9 Biliary and Gastrointestinal Fistulas Pulmonary and Respiratory Medicine 2 works
  10. 10 Breast Cancer Treatment Studies Cancer Research 2 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available44.6%not open55.4%

World: 28% of research is openly available.

with international co-authors3.8%domestic only96.2%

World: 19% is written across borders.

How has Kumamoto City Hospital's research output changed?

Output in 2018–2022 was 5% higher than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Kumamoto

All research institutions in Kumamoto

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.