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Hospital / health system · Tokyo · Japan

Cardiovascular Institute Hospital

In research, Cardiovascular Institute Hospital stands highest in Medicine (#6,215 of 10,443 worldwide), Health Sciences (#8,060 of 11,982 worldwide) and Cardiology and Cardiovascular Medicine (#586 of 738 worldwide), 2022–2025. Relative to its size it is most specialised in Cardiology and Cardiovascular Medicine and Medicine — Cardiology and Cardiovascular Medicine is 38.9× its share of world research.

cvi.or.jp/english.htmlROR OpenAlex
World rank, 2022–2025
#13,139
of 28,054 · #7,072 all time
Rank in Japan
#342
of 1,070
Research works
1.2k
◆ 1% vs 2013–17
Citations
48k
39.0 per fractional work
Top-10% rate
14.2%
record average 16.5%
Open access
52%
world 28%

What is Cardiovascular Institute 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 #6,215 of 10,443 13.2%131 #2270
Health SciencesDomain #8,060 of 11,982 13.1%133 #3047
Cardiology and Cardiovascular MedicineSubfield #586 of 738 11.8%68 #717

Each strip is that field’s whole ranked pool, with the notch where Cardiovascular Institute 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).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Medicine#2,270 #6,215
  2. Health Sciences#3,047 #8,060
  3. Cardiology and Cardiovascular Medicine#717 #586
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does Cardiovascular Institute Hospital specialise in?

Where its research is concentrated relative to its size: Cardiology and Cardiovascular Medicine takes 38.9× the share of its output that it takes of world research.

  1. Cardiology and Cardiovascular MedicineSubfield · 68.3 works39×
  2. MedicineField · 131.0 works4.1×
← 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: 0.03× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.36× its world share, 12 worksBiochemistry, Geneti…Immunology and Microbiology: 1.40× its world share, 2 worksImmunology and Micro…Neuroscience: 1.26× its world share, 3 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.21× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.30× its world share, 1 worksChemistryComputer Science: 0.04× its world share, 0 worksComputer ScienceEngineering: 0.31× its world share, 8 worksEngineeringEnvironmental Science: 0.10× its world share, 1 worksEnvironmental ScienceMaterials Science: 0.31× its world share, 2 worksMaterials ScienceMathematics: 0.06× its world share, 0 worksMathematicsPhysics and Astronomy: 0.08× its world share, 0 worksPhysics and AstronomyHealth Professions: 0.36× its world share, 2 worksHealth ProfessionsMedicine: 4.07× its world share, 131 worksMedicineNursing: 0.74× its world share, 1 worksNursingVeterinary: 0.29× its world share, 0 worksVeterinaryBusiness, Management and Accounting: 0.04× its world share, 0 worksBusiness, Management…Decision Sciences: 0.03× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.43× its world share, 2 worksEconomics, Econometr…Psychology: 0.08× its world share, 0 worksPsychologySocial Sciences: 0.06× its world share, 1 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Medicine, 4.1×. Every wedge is a field page.

Who are the top researchers at Cardiovascular Institute Hospital?

Ranked on the composite score, Z Hejl, Yuji Oikawa and Long-tai Fu lead among researchers whose main affiliation is Cardiovascular Institute Hospital.

  1. 1 Z Hejl Japan · #69,901 worldwide 205 citations · 30 works
  2. 2 Yuji Oikawa Japan · #196,805 worldwide 191 citations · 58 works
  3. 3 Long-tai Fu Japan · #227,781 worldwide 45 citations · 29 works
  4. 4 Shinya Suzuki Japan · #276,144 worldwide 98 citations · 57 works
  5. 5 Tadanori Aizawa Japan · #365,120 worldwide 126 citations · 75 works
  6. 6 Kazuyuki Nagashima Japan · #399,587 worldwide 30 citations · 31 works
  7. 7 Takeshi Yamashita Japan · #435,700 worldwide 256 citations · 123 works
  8. 8 Koichi Sagara Japan · #486,348 worldwide 46 citations · 34 works
  9. 9 Junji Yajima Japan · #527,891 worldwide 53 citations · 42 works
  10. 10 Takayuki Otsuka Japan · #634,772 worldwide 30 citations · 24 works
All ranked researchers at Cardiovascular Institute Hospital

Which keywords describe research at Cardiovascular Institute Hospital?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Guidelines, Catheter Ablation, Heart Failure, Arrhythmias, Atrial Fibrillation, Stroke Prevention, Anticoagulant Therapy and Risk Stratification.

▲ 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. Guidelines23▲ 30×5 topics
  2. Catheter Ablation22▲ 108×2 topics
  3. Heart Failure18▲ 25×11 topics
  4. Arrhythmias15▲ 97×2 topics
  5. Atrial Fibrillation15▲ 89×2 topics
  6. Stroke Prevention14▲ 72×2 topics
  7. Anticoagulant Therapy14▲ 65×2 topics
  8. Risk Stratification13▲ 111×1 topic
  9. Thromboembolism13▲ 111×1 topic
  10. Cardiovascular Disease13▲ 7.0×29 topics
  11. Echocardiography12▲ 26×8 topics
  12. Epidemiology12▲ 1.81×36 topics
  13. Myocardial Infarction12▲ 31×7 topics
  14. Cardiomyopathy10▲ 64×4 topics
  15. Sudden Cardiac Death9▲ 65×2 topics
  16. Obesity9▲ 6.9×15 topics
  17. Percutaneous Coronary Intervention9▲ 39×4 topics
  18. Radiofrequency Ablation9▲ 49×1 topic
  19. Ventricular Tachycardia9▲ 104×1 topic
  20. Atherosclerosis8▲ 18×9 topics
  21. Cardiac Imaging8▲ 39×3 topics
  22. Coronary Artery Disease7▲ 38×3 topics
  23. Ion Channels7▲ 41×4 topics
  24. Magnetic Resonance Imaging7▲ 17×4 topics
  25. Treatment7▲ 3.6×10 topics
  26. Diagnosis7▲ 4.5×11 topics
  27. Calcium Signaling7▲ 56×4 topics
  28. Cardiac Electrophysiology6▲ 88×1 topic
  29. Long-QT Syndrome6▲ 88×1 topic
  30. Radiation Exposure6▲ 37×2 topics
  31. Cardiovascular Risk6▲ 11×4 topics
  32. Computed Tomography Angiography6▲ 53×1 topic
  33. Myocardial Perfusion6▲ 53×1 topic
  34. Chamber Quantification6▲ 42×1 topic
  35. Diastolic Function6▲ 42×1 topic
  36. Coronary Stents5▲ 72×1 topic
  37. Myocardial Revascularization5▲ 72×1 topic
  38. Endovascular Repair4▲ 32×3 topics
  39. Surgical Aortic-Valve Replacement4▲ 36×1 topic
  40. Transcatheter Aortic-Valve Replacement4▲ 36×1 topic

Which research topics does Cardiovascular Institute Hospital publish most on?

By volume in 2022–2025: Atrial Fibrillation Management and Outcomes, Cardiac Arrhythmias and Treatments, Cardiac electrophysiology and arrhythmias and Cardiac Imaging and Diagnostics.

Atrial Fibrillation Mana…13Atrial Fibrillation Management and Outcomes: 13 fractional worksCardiac Arrhythmias and Treatments: 9 fractional worksCardiac electrophysiolog…6Cardiac electrophysiology and arrhythmias: 6 fractional worksCardiac Imaging and Diag…6Cardiac Imaging and Diagnostics: 6 fractional worksCardiovascular Function and Risk Factors: 6 fractional worksCoronary Interventions and Diagnostics: 5 fractional worksCardiac Valve Diseases a…4Cardiac Valve Diseases and Treatments: 4 fractional worksHeart Failure Treatment and Management: 4 fractional worksECG Monitoring and Analysis: 3 fractional worksCardiac, Anesthesia and Surgical Outcomes: 3 fractional works
Cardiology and Cardiovascular MedicineRadiology, Nuclear Medicine and ImagingSurgery

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

  1. 1 Atrial Fibrillation Management and Outcomes Cardiology and Cardiovascular Medicine 13 works
  2. 2 Cardiac Arrhythmias and Treatments Cardiology and Cardiovascular Medicine 9 works
  3. 3 Cardiac electrophysiology and arrhythmias Cardiology and Cardiovascular Medicine 6 works
  4. 4 Cardiac Imaging and Diagnostics Radiology, Nuclear Medicine and Imaging 6 works
  5. 5 Cardiovascular Function and Risk Factors Cardiology and Cardiovascular Medicine 6 works
  6. 6 Coronary Interventions and Diagnostics Surgery 5 works
  7. 7 Cardiac Valve Diseases and Treatments Cardiology and Cardiovascular Medicine 4 works
  8. 8 Heart Failure Treatment and Management Cardiology and Cardiovascular Medicine 4 works
  9. 9 ECG Monitoring and Analysis Cardiology and Cardiovascular Medicine 3 works
  10. 10 Cardiac, Anesthesia and Surgical Outcomes Cardiology and Cardiovascular Medicine 3 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 available51.5%not open48.5%

World: 28% of research is openly available.

with international co-authors48.6%domestic only51.4%

World: 19% is written across borders.

How has Cardiovascular Institute Hospital's research output changed?

Output in 2018–2022 was 1% lower 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 Tokyo

All research institutions in Tokyo

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.