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Hospital / health system · Yamaguchi · Japan

Iwakuni Medical Center

In research, Iwakuni Medical Center stands highest in Medicine (#7,515 of 8,541 worldwide) and Health Sciences (#8,754 of 9,902 worldwide), 2022-now. Relative to its size it is most specialised in Pulmonary and Respiratory Medicine and Medicine (Pulmonary and Respiratory Medicine is 16.9× its share of world research).

iwakuni-nh.go.jpROR OpenAlex
World rank, 2022-now
#22,296
of 22,385 · #33,600 all time
Rank in Japan
#914
of 924
Research works
501
▼ 7% vs 2018-21
Citations
2.9k
5.8 per fractional work
Top-10% rate
3.5%
all institutions 10.0%
vs its own fields
0.90×
1.00× is exactly expected
Open access
60%
world 40%
International
4%
world 18%
Iwakuni Medical Center

What is Iwakuni 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 #7,515 of 8,541 2.7%64 #13364
Health SciencesDomain #8,754 of 9,902 2.7%65 #15382

Each strip is that field's whole ranked pool, with the notch where Iwakuni 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 Iwakuni Medical Center work in?

In 2022-now, 89% of research at Iwakuni Medical Center is in Health Sciences, 8% in Life Sciences. Its largest fields are Medicine (87%), Biochemistry, Genetics and Molecular Biology (4%), Immunology and Microbiology (2%). It does 3.5× the world's share of Health Sciences.

Health Sciences: 72 fractional works · 89.5% of its workMedicine: 70 fractional works · 87.2% of its workPulmonary and Respiratory Medicine: 21 fractional works · 26.0% of its workSurgery: 11 fractional works · 13.3% of its workOncology: 7 fractional works · 8.6% of its workCardiology and Cardiovascular Medicine: 4 fractional works · 5.3% of its workGastroenterology: 4 fractional works · 4.7% of its workEpidemiology: 3 fractional works · 3.7% of its workRadiology, Nuclear Medicine and Imaging: 3 fractional works · 3.6% of its workRheumatology: 2 fractional works · 2.9% of its workPhysiology: 2 fractional works · 2.7% of its workNeurology: 2 fractional works · 2.3% of its workPathology and Forensic Medicine: 2 fractional works · 2.2% of its workEmergency Medicine: 1 fractional works · 1.6% of its workHematology: 1 fractional works · 1.3% of its workGenetics: 1 fractional works · 1.2% of its workAnesthesiology and Pain Medicine: 1 fractional works · 0.9% of its workDermatology: 1 fractional works · 0.8% of its workObstetrics and Gynecology: 1 fractional works · 0.8% of its workReproductive Medicine: 1 fractional works · 0.8% of its workPsychiatry and Mental health: 1 fractional works · 0.6% of its workInfectious Diseases: 0 fractional works · 0.6% of its workHepatology: 0 fractional works · 0.5% of its workOphthalmology: 0 fractional works · 0.4% of its workPublic Health, Environmental and Occupational Health: 0 fractional works · 0.4% of its workCritical Care and Intensive Care Medicine: 0 fractional works · 0.4% of its workMicrobiology: 0 fractional works · 0.4% of its workNephrology: 0 fractional works · 0.4% of its workPharmacology: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.6% of its workHealth Professions: 1 fractional works · 1.7% of its workGeneral Health Professions: 1 fractional works · 1.2% of its workRadiological and Ultrasound Technology: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workVeterinary: 0 fractional works · 0.4% of its workSmall Animals: 0 fractional works · 0.4% of its workNursing: 0 fractional works · 0.1% of its workLife Sciences: 7 fractional works · 8.1% of its workBiochemistry, Genetics and Molecular Biology: 3 fractional works · 4.2% of its workMolecular Biology: 2 fractional works · 2.5% of its workGenetics: 1 fractional works · 1.0% of its workBiotechnology: 0 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.2% of its workImmunology and Microbiology: 2 fractional works · 2.4% of its workImmunology: 1 fractional works · 1.5% of its workMicrobiology: 1 fractional works · 0.8% of its workSmaller subfields together: 0 fractional works · 0.0% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.8% of its workPharmaceutical Science: 0 fractional works · 0.4% of its workPharmacology: 0 fractional works · 0.4% of its workAgricultural and Biological Sciences: 0 fractional works · 0.6% of its workInsect Science: 0 fractional works · 0.6% of its workSocial Sciences: 1 fractional works · 1.5% of its workSocial Sciences: 1 fractional works · 0.8% of its workSociology and Political Science: 1 fractional works · 0.8% of its workPsychology: 0 fractional works · 0.5% of its workSocial Psychology: 0 fractional works · 0.5% of its workBusiness, Management and Accounting: 0 fractional works · 0.1% of its workPhysical Sciences: 1 fractional works · 1.0% of its workEnergy: 0 fractional works · 0.4% of its workRenewable Energy, Sustainability and the Environment: 0 fractional works · 0.4% of its workEnvironmental Science: 0 fractional works · 0.2% of its workNature and Landscape Conservation: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.0% of its workEngineering: 0 fractional works · 0.2% of its workPhysics and Astronomy: 0 fractional works · 0.1% of its workComputer Science: 0 fractional works · 0.0% of its workALL ITS WORKIwakuni MedicalCenter81fractional works, 2022-now
Life Sciences8%Physical Sciences1%Health Sciences89%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 16 fields, with their numbers
    1. Medicine7087.2%
    2. Health Professions11.7%
    3. Veterinary00.4%
    4. Nursing00.1%
    1. Biochemistry, Genetics and Molecular Biology34.2%
    2. Immunology and Microbiology22.4%
    3. Pharmacology, Toxicology and Pharmaceutics10.8%
    4. Agricultural and Biological Sciences00.6%
    1. Social Sciences10.8%
    2. Psychology00.5%
    3. Business, Management and Accounting00.1%
    1. Energy00.4%
    2. Environmental Science00.2%
    3. Engineering00.2%
    4. Physics and Astronomy00.1%
    5. Computer Science00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Iwakuni Medical Center specialise in?

Where its research is concentrated relative to its size: Pulmonary and Respiratory Medicine takes 16.9× the share of its output that it takes of world research.

  1. Pulmonary and Respiratory MedicineSubfield · 21.0 works17×
  2. MedicineField · 70.3 works4.5×
← 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: 0.13× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.80× its world share, 3 worksBiochemistry, Geneti…Immunology and Microbiology: 2.39× its world share, 2 worksImmunology and Micro…Pharmacology, Toxicology and Pharmaceutics: 2.35× its world share, 1 worksPharmacology, Toxico…Energy: 0.45× its world share, 0 worksEnergyEngineering: 0.01× its world share, 0 worksEngineeringEnvironmental Science: 0.05× its world share, 0 worksEnvironmental SciencePhysics and Astronomy: 0.04× its world share, 0 worksPhysics and AstronomyHealth Professions: 0.66× its world share, 1 worksHealth ProfessionsMedicine: 4.54× its world share, 70 worksMedicineNursing: 0.31× its world share, 0 worksNursingVeterinary: 3.04× its world share, 0 worksVeterinaryBusiness, Management and Accounting: 0.03× its world share, 0 worksBusiness, Management…Psychology: 0.17× its world share, 0 worksPsychologySocial Sciences: 0.07× 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, 4.5×. Every wedge is a field page.

All 15 fields, with their numbers
  1. Medicine4.54×70 works
  2. Veterinary3.04×0 works
  3. Immunology and Microbiology2.39×2 works
  4. Pharmacology, Toxicology and Pharmaceutics2.35×1 works
  5. Biochemistry, Genetics and Molecular Biology0.80×3 works
  6. Health Professions0.66×1 works
  7. Energy0.45×0 works
  8. Nursing0.31×0 works
  9. Psychology0.17×0 works
  10. Agricultural and Biological Sciences0.13×0 works
  11. Social Sciences0.07×1 works
  12. Environmental Science0.05×0 works
  13. Physics and Astronomy0.04×0 works
  14. Business, Management and Accounting0.03×0 works
  15. Engineering0.01×0 works

Who are the top researchers at Iwakuni Medical Center?

Ranked on the quality score, Shoichi Kuyama, Toshiaki Morihiro and Shinji Otsuka lead among researchers whose main affiliation is Iwakuni Medical Center.

  1. 1 Shoichi Kuyama Japan · #2,437,795 worldwide 4.5k citations · 205 works
  2. 2 Toshiaki Morihiro Japan · #2,825,099 worldwide 309 citations · 25 works
  3. 3 Shinji Otsuka Japan · #3,110,730 worldwide 1.6k citations · 29 works
  4. 4 Seitaro Nishimura Japan · #3,244,619 worldwide 150 citations · 49 works
  5. 5 Tetsuya Masaoka Japan · #4,007,086 worldwide 164 citations · 16 works
  6. 6 Keiji Yamada Japan · #4,209,138 worldwide 176 citations · 19 works
  7. 7 Kei Yokota Japan · #4,566,836 worldwide 206 citations · 27 works
  8. 8 Isao Yasuhara Japan · #4,742,032 worldwide 52 citations · 23 works
  9. 9 Machiko Tanakaya Japan · #4,836,259 worldwide 205 citations · 22 works
  10. 10 Koji Tanakaya Japan · #5,016,396 worldwide 252 citations · 37 works
All ranked researchers at Iwakuni Medical Center

What are the most cited papers from Iwakuni Medical Center?

The most cited paper from Iwakuni Medical Center is "Impact and predictors of acute exacerbation of interstitial lung diseases after pulmonary resection for lung cancer" (Toshihiko Satō, Satoshi Teramukai, Haruhiko Kondo et al., 2013), with 316 citations. Next come "Natural History of Pulmonary Subsolid Nodules: A Prospective Multicenter Study" (278) and "The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2020 (J-SSCG 2020)" (252).

Most cited papers
#PaperReleasedCitations
1 Impact and predictors of acute exacerbation of interstitial lung diseases after pulmonary resection for lung cancer Toshihiko Satō, Satoshi Teramukai, Haruhiko Kondo et al. · Journal of Thoracic and Cardiovascular Surgery Open access 21 Nov 2013 316
2 Natural History of Pulmonary Subsolid Nodules: A Prospective Multicenter Study Ryutaro Kakinuma, Masayuki Noguchi, Kazuto Ashizawa et al. · Journal of Thoracic Oncology Open access 16 Apr 2016 278
3 The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2020 (J-SSCG 2020) Moritoki Egi et al. · Journal of Intensive Care Open access226 authors 25 Aug 2021 252
4 Ultrathin Bronchoscopy with Multimodal Devices for Peripheral Pulmonary Lesions. A Randomized Trial Masahide Oki, Hideo Saka, Masahiko Ando et al. · American Journal of Respiratory and Critical Care Medicine 3 Jun 2015 235
5 Morning and Evening Home Blood Pressure and Risks of Incident Stroke and Coronary Artery Disease in the Japanese General Practice Population Satoshi Hoshide, Yuichiro Yano, Hajime Haimoto et al. · Hypertension 10 May 2016 231
All 59 most cited papers, with filters and sorting

Which keywords describe research at Iwakuni Medical Center?

By fractional works in 2022-now, weighted toward what it does more of than the world: Chemotherapy, Prognostic Factors, Clinical Practice Guidelines, Adjuvant Therapy, Surgical Management, Diagnosis, Clinical Trials and Targeted Therapy.

▲ 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. Chemotherapy11▲ 19×18 topics
  2. Epidemiology8▲ 2.5×33 topics
  3. Prognostic Factors7▲ 19×10 topics
  4. Clinical Practice Guidelines5▲ 12×8 topics
  5. Diagnosis5▲ 7.1×21 topics
  6. Adjuvant Therapy5▲ 51×2 topics
  7. Surgical Management5▲ 15×8 topics
  8. Clinical Trials5▲ 9.0×6 topics
  9. Targeted Therapy5▲ 26×5 topics
  10. Immunotherapy4▲ 7.7×12 topics
  11. Molecular Characterization4▲ 31×4 topics
  12. Survival Analysis4▲ 20×5 topics
  13. Treatment4▲ 4.4×17 topics
  14. Prognostic Markers4▲ 47×2 topics
  15. PET Imaging4▲ 30×4 topics
  16. Management4▲ 6.0×17 topics
  17. Molecular Profiling4▲ 49×3 topics
  18. Gastric Cancer4▲ 40×3 topics
  19. Endoscopic Resection3▲ 42×2 topics
  20. Breast Cancer3▲ 16×4 topics
  21. Immunohistochemistry3▲ 59×2 topics
  22. Metastasis3▲ 12×6 topics
  23. Tumor Microenvironment3▲ 9.1×5 topics
  24. Neoadjuvant Chemotherapy3▲ 47×2 topics
  25. Therapeutic Targets3▲ 26×4 topics
  26. Treatment Guidelines3▲ 18×2 topics
  27. Genomic Profiling3▲ 37×2 topics
  28. Lymph Node Dissection3▲ 67×1 topic
  29. Metastatic Gastric Cancer3▲ 67×1 topic
  30. Imatinib Mesylate3▲ 76×1 topic
  31. Lung Tumors3▲ 222×1 topic
  32. Metastatic Carcinomas3▲ 222×1 topic
  33. Sunitinib3▲ 137×1 topic
  34. ALK Inhibitors3▲ 57×1 topic
  35. Complications3▲ 7.0×10 topics
  36. EGFR Mutations3▲ 57×1 topic
  37. Imaging3▲ 14×3 topics
  38. Genetic Mutations3▲ 7.5×9 topics
  39. Tumor Staging2▲ 27×2 topics
  40. Echocardiography2▲ 10×5 topics

Which research topics does Iwakuni Medical Center publish most on?

By volume in 2022-now: Gastric Cancer Management and Outcomes, Metastasis and carcinoma case studies, Gastrointestinal Tumor Research and Treatment and Lung Cancer Treatments and Mutations.

Gastric Cancer Managemen…3Gastric Cancer Management and Outcomes: 3 fractional worksMetastasis and carcinoma…3Metastasis and carcinoma case studies: 3 fractional worksGastrointestinal Tumor R…3Gastrointestinal Tumor Research and Treatment: 3 fractional worksLung Cancer Treatments a…3Lung Cancer Treatments and Mutations: 3 fractional worksLung Cancer Diagnosis and Treatment: 2 fractional worksTracheal and airway disorders: 2 fractional worksMedical Imaging Techniqu…1Medical Imaging Techniques and Applications: 1 fractional worksEsophageal and GI Pathology: 1 fractional worksGastrointestinal disorders and treatments: 1 fractional worksInflammatory Biomarkers in Disease Prognosis: 1 fractional works
Pulmonary and Respiratory MedicineGastroenterologyRadiology, Nuclear Medicine and ImagingSurgery1 others

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

  1. 1 Gastric Cancer Management and Outcomes Pulmonary and Respiratory Medicine 3 works
  2. 2 Metastasis and carcinoma case studies Pulmonary and Respiratory Medicine 3 works
  3. 3 Gastrointestinal Tumor Research and Treatment Gastroenterology 3 works
  4. 4 Lung Cancer Treatments and Mutations Pulmonary and Respiratory Medicine 3 works
  5. 5 Lung Cancer Diagnosis and Treatment Pulmonary and Respiratory Medicine 2 works
  6. 6 Tracheal and airway disorders Pulmonary and Respiratory Medicine 2 works
  7. 7 Medical Imaging Techniques and Applications Radiology, Nuclear Medicine and Imaging 1 works
  8. 8 Esophageal and GI Pathology Surgery 1 works
  9. 9 Gastrointestinal disorders and treatments Surgery 1 works
  10. 10 Inflammatory Biomarkers in Disease Prognosis Oncology 1 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 available59.9%not open40.1%

World: 40% of research is openly available.

with international co-authors4.3%domestic only95.7%

World: 18% is written across borders.

How has Iwakuni Medical Center's research output changed?

Output in 2022-2025 was 7% lower 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 Iwakuni Medical Center as a percentage of every work published that year, 0.00035% in 2024.

still counting0.0010%0.0020%Iwakuni Medical Center0.00032% in 202519801990200020102020

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

Other research institutions in Yamaguchi

All research institutions in Yamaguchi

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Iwakuni Medical Center on Science Explorer

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