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Hospital / health system · Okayama · Japan

Okayama Medical Center

In research, Okayama Medical Center stands highest in Medicine (#6,132 of 8,541 worldwide) and Health Sciences (#7,387 of 9,902 worldwide), 2022-now. Relative to its size it is most specialised in Pulmonary and Respiratory Medicine and Surgery (Pulmonary and Respiratory Medicine is 17.4× its share of world research).

okayamamc.jp/index.phpROR OpenAlex
World rank, 2022-now
#20,918
of 22,385 · #29,987 all time
Rank in Japan
#745
of 924
Research works
787
▲ 21% vs 2018-21
Citations
8.8k
11.1 per fractional work
Top-10% rate
6.4%
all institutions 10.0%
vs its own fields
0.87×
1.00× is exactly expected
Open access
52%
world 40%
International
6%
world 18%
Okayama Medical Center

What is Okayama Medical Center known for in research?

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

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
MedicineField #6,132 of 8,541 4.9%123 #10102
Health SciencesDomain #7,387 of 9,902 5.0%126 #12475

Each strip is that field's whole ranked pool, with the notch where Okayama Medical Center 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 average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Okayama Medical Center work in?

In 2022-now, 91% of research at Okayama Medical Center is in Health Sciences, 6% in Life Sciences. Its largest fields are Medicine (88%), Biochemistry, Genetics and Molecular Biology (4%), Health Professions (1%). It does 3.7× the world's share of Health Sciences.

Health Sciences: 152 fractional works · 90.8% of its workMedicine: 147 fractional works · 88.4% of its workPulmonary and Respiratory Medicine: 45 fractional works · 26.7% of its workSurgery: 23 fractional works · 13.6% of its workCardiology and Cardiovascular Medicine: 9 fractional works · 5.6% of its workOncology: 8 fractional works · 4.7% of its workEpidemiology: 7 fractional works · 4.2% of its workPediatrics, Perinatology and Child Health: 6 fractional works · 3.5% of its workNeurology: 5 fractional works · 2.7% of its workRheumatology: 4 fractional works · 2.6% of its workPathology and Forensic Medicine: 4 fractional works · 2.5% of its workGenetics: 4 fractional works · 2.4% of its workRadiology, Nuclear Medicine and Imaging: 4 fractional works · 2.2% of its workPhysiology: 4 fractional works · 2.2% of its workEndocrinology, Diabetes and Metabolism: 3 fractional works · 1.7% of its workPublic Health, Environmental and Occupational Health: 3 fractional works · 1.6% of its workHematology: 2 fractional works · 1.4% of its workObstetrics and Gynecology: 2 fractional works · 1.4% of its workInfectious Diseases: 2 fractional works · 1.1% of its workInternal Medicine: 2 fractional works · 1.1% of its workTransplantation: 1 fractional works · 0.8% of its workPsychiatry and Mental health: 1 fractional works · 0.8% of its workGastroenterology: 1 fractional works · 0.7% of its workAnesthesiology and Pain Medicine: 1 fractional works · 0.7% of its workOphthalmology: 1 fractional works · 0.5% of its workOtorhinolaryngology: 1 fractional works · 0.5% of its workCritical Care and Intensive Care Medicine: 1 fractional works · 0.4% of its workUrology: 1 fractional works · 0.4% of its workOrthopedics and Sports Medicine: 1 fractional works · 0.4% of its workPharmacology: 1 fractional works · 0.4% of its workHepatology: 0 fractional works · 0.3% of its workNephrology: 0 fractional works · 0.3% of its workRehabilitation: 0 fractional works · 0.3% of its workDermatology: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.6% of its workHealth Professions: 2 fractional works · 1.3% of its workEmergency Medical Services: 1 fractional works · 0.5% of its workSpeech and Hearing: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.3% of its workVeterinary: 1 fractional works · 0.4% of its workSmall Animals: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workDentistry: 1 fractional works · 0.4% of its workOral Surgery: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workNursing: 1 fractional works · 0.3% of its workNutrition and Dietetics: 1 fractional works · 0.3% of its workLife Sciences: 10 fractional works · 6.0% of its workBiochemistry, Genetics and Molecular Biology: 6 fractional works · 3.7% of its workMolecular Biology: 3 fractional works · 1.8% of its workGenetics: 2 fractional works · 1.2% of its workClinical Biochemistry: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workImmunology and Microbiology: 2 fractional works · 1.2% of its workImmunology: 2 fractional works · 1.1% of its workSmaller subfields together: 0 fractional works · 0.1% of its workNeuroscience: 2 fractional works · 1.0% of its workCellular and Molecular Neuroscience: 1 fractional works · 0.4% of its workCognitive Neuroscience: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.4% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.1% of its workAgricultural and Biological Sciences: 0 fractional works · 0.0% of its workPhysical Sciences: 3 fractional works · 2.1% of its workEngineering: 2 fractional works · 1.1% of its workBiomedical Engineering: 2 fractional works · 1.0% of its workSmaller subfields together: 0 fractional works · 0.0% of its workEnvironmental Science: 1 fractional works · 0.4% of its workPhysics and Astronomy: 0 fractional works · 0.3% of its workChemistry: 0 fractional works · 0.2% of its workMaterials Science: 0 fractional works · 0.1% of its workComputer Science: 0 fractional works · 0.0% of its workSocial Sciences: 2 fractional works · 1.1% of its workPsychology: 1 fractional works · 0.6% of its workClinical Psychology: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.4% of its workSocial Sciences: 0 fractional works · 0.3% of its workBusiness, Management and Accounting: 0 fractional works · 0.1% of its workEconomics, Econometrics and Finance: 0 fractional works · 0.1% of its workALL ITS WORKOkayama MedicalCenter167fractional works, 2022-now
Life Sciences6%Physical Sciences2%Health Sciences91%Social Sciences1%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 20 fields, with their numbers
    1. Medicine14788.4%
    2. Health Professions21.3%
    3. Veterinary10.4%
    4. Dentistry10.4%
    5. Nursing10.3%
    1. Biochemistry, Genetics and Molecular Biology63.7%
    2. Immunology and Microbiology21.2%
    3. Neuroscience21.0%
    4. Pharmacology, Toxicology and Pharmaceutics00.1%
    5. Agricultural and Biological Sciences00.0%
    1. Engineering21.1%
    2. Environmental Science10.4%
    3. Physics and Astronomy00.3%
    4. Chemistry00.2%
    5. Materials Science00.1%
    6. Computer Science00.0%
    1. Psychology10.6%
    2. Social Sciences00.3%
    3. Business, Management and Accounting00.1%
    4. Economics, Econometrics and Finance00.1%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Okayama Medical Center specialise in?

Where its research is concentrated relative to its size: Pulmonary and Respiratory Medicine takes 17.4× the share of its output that it takes of world research.

  1. Pulmonary and Respiratory MedicineSubfield · 44.5 works17×
  2. SurgerySubfield · 22.7 works5.8×
← 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: 0.01× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.69× its world share, 6 worksBiochemistry, Geneti…Immunology and Microbiology: 1.15× its world share, 2 worksImmunology and Micro…Neuroscience: 0.60× its world share, 2 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.22× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.13× its world share, 0 worksChemistryComputer Science: 0.01× its world share, 0 worksComputer ScienceEngineering: 0.07× its world share, 2 worksEngineeringEnvironmental Science: 0.08× its world share, 1 worksEnvironmental ScienceMaterials Science: 0.02× its world share, 0 worksMaterials SciencePhysics and Astronomy: 0.13× its world share, 0 worksPhysics and AstronomyDentistry: 0.83× its world share, 1 worksDentistryHealth Professions: 0.49× its world share, 2 worksHealth ProfessionsMedicine: 4.60× its world share, 148 worksMedicineNursing: 0.67× its world share, 0 worksNursingVeterinary: 3.08× its world share, 1 worksVeterinaryBusiness, Management and Accounting: 0.04× its world share, 0 worksBusiness, Management…Economics, Econometrics and Finance: 0.03× its world share, 0 worksEconomics, Econometr…Psychology: 0.21× 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, 4.6×. Every wedge is a field page.

All 20 fields, with their numbers
  1. Medicine4.60×148 works
  2. Veterinary3.08×1 works
  3. Immunology and Microbiology1.15×2 works
  4. Dentistry0.83×1 works
  5. Biochemistry, Genetics and Molecular Biology0.69×6 works
  6. Nursing0.67×0 works
  7. Neuroscience0.60×2 works
  8. Health Professions0.49×2 works
  9. Pharmacology, Toxicology and Pharmaceutics0.22×0 works
  10. Psychology0.21×1 works
  11. Chemistry0.13×0 works
  12. Physics and Astronomy0.13×0 works
  13. Environmental Science0.08×1 works
  14. Engineering0.07×2 works
  15. Business, Management and Accounting0.04×0 works
  16. Economics, Econometrics and Finance0.03×0 works
  17. Materials Science0.02×0 works
  18. Social Sciences0.02×0 works
  19. Agricultural and Biological Sciences0.01×0 works
  20. Computer Science0.01×0 works

Who are the top researchers at Okayama Medical Center?

Ranked on the quality score, Hiromi Matsubara, Aiko Ogawa and Mari Nishizaki lead among researchers whose main affiliation is Okayama Medical Center.

  1. 1 Hiromi Matsubara Japan · #844,952 worldwide 10k citations · 360 works
  2. 2 Aiko Ogawa Japan · #1,449,826 worldwide 5.2k citations · 171 works
  3. 3 Mari Nishizaki Japan · #1,657,482 worldwide 762 citations · 22 works
  4. 4 Hiroto Shimokawahara Japan · #2,554,844 worldwide 813 citations · 98 works
  5. 5 Hiromi Matsubara Japan · #3,116,252 worldwide 87 citations · 17 works
  6. 6 Yuetsu Ihara Japan · #3,174,745 worldwide 971 citations · 27 works
  7. 7 Shinnosuke Nakahara Japan · #3,205,166 worldwide 922 citations · 42 works
  8. 8 Toshiro Yonei Japan · #3,533,074 worldwide 1.1k citations · 34 works
  9. 9 Izumi Iseda Japan · #3,632,768 worldwide 520 citations · 19 works
  10. 10 Itsuro Yamanouchi Japan · #3,675,693 worldwide 652 citations · 37 works
All ranked researchers at Okayama Medical Center

What are the most cited papers from Okayama Medical Center?

The most cited paper from Okayama Medical Center is "Chronic thromboembolic pulmonary hypertension" (Nick H. Kim, Marion Delcroix, Xavier Jaïs et al., 2018), with 1,016 citations. Next come "HYPOCATALASEMIA: A NEW GENETIC CARRIER STATE*" (727) and "Heterozygous TGFBR2 mutations in Marfan syndrome" (623).

Most cited papers
#PaperReleasedCitations
1 Chronic thromboembolic pulmonary hypertension Nick H. Kim, Marion Delcroix, Xavier Jaïs et al. · European Respiratory Journal Open access 13 Dec 2018 1,016
2 HYPOCATALASEMIA: A NEW GENETIC CARRIER STATE* Shigeo Takahara, Howard B. Hamilton, James V. Neel et al. · Journal of Clinical Investigation Open access Apr 1960 727
3 Heterozygous TGFBR2 mutations in Marfan syndrome Takeshi Mizuguchi et al. · Nature Genetics Open access 4 Jul 2004 623
4 Refined Balloon Pulmonary Angioplasty for Inoperable Patients with Chronic Thromboembolic Pulmonary Hypertension Hiroki Mizoguchi, Aiko Ogawa, Mitsuru Munemasa et al. · Circulation Cardiovascular Interventions 28 Nov 2012 609
5 ERS statement on chronic thromboembolic pulmonary hypertension Marion Delcroix et al. · European Respiratory Journal Open access 17 Dec 2020 583
All 60 most cited papers, with filters and sorting

Which keywords describe research at Okayama Medical Center?

By fractional works in 2022-now, weighted toward what it does more of than the world: Treatment Guidelines, Echocardiography, Pulmonary Hypertension, Endothelial Dysfunction, Chronic Kidney Disease, Right Heart Assessment, Survival Prediction and Diagnosis.

▲ 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-now 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. Epidemiology15▲ 2.3×58 topics
  2. Treatment Guidelines15▲ 42×5 topics
  3. Echocardiography14▲ 31×7 topics
  4. Pulmonary Hypertension13▲ 58×3 topics
  5. Endothelial Dysfunction12▲ 32×5 topics
  6. Chronic Kidney Disease12▲ 29×7 topics
  7. Right Heart Assessment11▲ 173×1 topic
  8. Survival Prediction11▲ 173×1 topic
  9. Diagnosis11▲ 7.2×24 topics
  10. Treatment10▲ 4.8×26 topics
  11. Management8▲ 6.1×17 topics
  12. Mechanical Ventilation8▲ 42×2 topics
  13. Tissue Engineering8▲ 7.4×2 topics
  14. Airway Stenosis7▲ 81×1 topic
  15. Chemotherapy7▲ 6.2×16 topics
  16. Tracheostomy7▲ 81×1 topic
  17. Genetics7▲ 5.6×8 topics
  18. Immunotherapy7▲ 5.5×15 topics
  19. Radiotherapy6▲ 8.6×7 topics
  20. Interstitial Lung Disease6▲ 50×2 topics
  21. TGF-ß5▲ 20×4 topics
  22. Prognostic Factors5▲ 7.1×14 topics
  23. Complications5▲ 6.1×13 topics
  24. Fibrosis5▲ 16×6 topics
  25. Heart Failure5▲ 6.9×11 topics
  26. Genetic Mutations5▲ 6.9×17 topics
  27. Epithelial-Mesenchymal Transition5▲ 30×2 topics
  28. Idiopathic Pulmonary Fibrosis5▲ 59×1 topic
  29. Myofibroblast5▲ 59×1 topic
  30. Surgery4▲ 7.5×8 topics
  31. Tumor Microenvironment4▲ 5.5×7 topics
  32. Adjuvant Therapy4▲ 19×2 topics
  33. Surgical Management4▲ 5.6×16 topics
  34. Tumor Staging4▲ 19×2 topics
  35. Embolization4▲ 32×4 topics
  36. CT Screening3▲ 30×1 topic
  37. Lung Cancer3▲ 12×2 topics
  38. Positron Emission Tomography3▲ 30×1 topic
  39. Targeted Therapy3▲ 9.3×5 topics
  40. Genomic Profiling3▲ 19×2 topics

Which research topics does Okayama Medical Center publish most on?

By volume in 2022-now: Pulmonary Hypertension Research and Treatments, Tracheal and airway disorders, Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis and Lung Cancer Diagnosis and Treatment.

Pulmonary Hypertension R…11Pulmonary Hypertension Research and Treatments: 11 fractional worksTracheal and airway disorders: 7 fractional worksInterstitial Lung Diseases and Idiopathic Pulmonary Fibrosis: 5 fractional worksLung Cancer Diagnosis and Treatment: 3 fractional worksMedical Imaging and Pathology Studies: 3 fractional worksVascular Anomalies and Treatments: 3 fractional worksEsophageal and GI Pathology: 3 fractional worksLung Cancer Treatments and Mutations: 2 fractional worksCancer Immunotherapy and Biomarkers: 2 fractional worksNeonatal Respiratory Health Research: 2 fractional works
Pulmonary and Respiratory MedicineGeneticsSurgeryOncology

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

  1. 1 Pulmonary Hypertension Research and Treatments Pulmonary and Respiratory Medicine 11 works
  2. 2 Tracheal and airway disorders Pulmonary and Respiratory Medicine 7 works
  3. 3 Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis Pulmonary and Respiratory Medicine 5 works
  4. 4 Lung Cancer Diagnosis and Treatment Pulmonary and Respiratory Medicine 3 works
  5. 5 Medical Imaging and Pathology Studies Pulmonary and Respiratory Medicine 3 works
  6. 6 Vascular Anomalies and Treatments Genetics 3 works
  7. 7 Esophageal and GI Pathology Surgery 3 works
  8. 8 Lung Cancer Treatments and Mutations Pulmonary and Respiratory Medicine 2 works
  9. 9 Cancer Immunotherapy and Biomarkers Oncology 2 works
  10. 10 Neonatal Respiratory Health Research Pulmonary and Respiratory Medicine 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 available51.9%not open48.1%

World: 40% of research is openly available.

with international co-authors6.4%domestic only93.6%

World: 18% is written across borders.

How has Okayama Medical Center's research output changed?

Output in 2022-2025 was 21% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

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

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Okayama Medical Center as a percentage of every work published that year, 0.00071% in 2024.

still counting0.0010%0.0020%Okayama Medical Center0.00082% in 202519801990200020102020

Fractional works of Okayama Medical Center over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Okayama Medical Center6.4% in 202520102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 10.4% in 2019.

Other research institutions in Okayama

All research institutions in Okayama

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Okayama Medical Center on Science Explorer

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