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Researcher · Gunma Prefectural Cardiovascular Center · Japan

Keiko Koyama

Keiko Koyama publishes mostly in Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging and Surgery, on topics such as Cardiac Arrhythmias and Treatments, Atrial Fibrillation Management and Outcomes and Cardiac Imaging and Diagnostics.

OpenAlex
World rank
#3,144,663
of 7,710,434 ranked researchers
Rank in Japan
#72,239
of 383,136
Works
80
Citations
1.8k
Citations per work
22.5
h-index
20
i10-index 31Top 20% in Cardiology and Cardiovascular Medicine
Keiko Koyama

What does Keiko Koyama research?

Keiko Koyama's work is mostly in Medicine (60%), Neuroscience (3%), Arts and Humanities (2%).

Health Sciences: 48 works · 60.0% of their workMedicine: 48 works · 60.0% of their workCardiology and Cardiovascular Medicine: 27 works · 33.8% of their workRadiology, Nuclear Medicine and Imaging: 15 works · 18.4% of their workPulmonary and Respiratory Medicine: 3 works · 3.9% of their workSurgery: 3 works · 3.9% of their workEverything else: 27 works · 34.2% of their workLife Sciences: 3 works · 3.4% of their workNeuroscience: 3 works · 3.4% of their workCognitive Neuroscience: 3 works · 3.4% of their workSocial Sciences: 2 works · 2.4% of their workArts and Humanities: 2 works · 2.4% of their workHistory: 2 works · 2.4% of their workTHEIR WORKKeiko Koyama80works
Life Sciences3%Health Sciences60%Social Sciences2%

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. Medicine4860.0%
  2. Everything else2734.2%
    1. Neuroscience33.4%
    1. Arts and Humanities22.4%
  1. 1Cardiology and Cardiovascular Medicine34% of their works
  2. 2Radiology, Nuclear Medicine and Imaging18% of their works
  3. 3Surgery4% of their works
  4. 4Pulmonary and Respiratory Medicine4% of their works
  5. 5Cognitive Neuroscience3% of their works
  6. 6History2% of their works

Research topics

Which keywords describe Keiko Koyama's research?

The keywords of their largest research topics: Catheter Ablation, Magnetic Resonance Imaging, Arrhythmias, Ventricular Tachycardia, Anticoagulant Therapy, Atrial Fibrillation, Cardiac Imaging and Coronary Artery Disease.

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 20 words, with their numbers
  1. Catheter Ablation452 topics
  2. Magnetic Resonance Imaging262 topics
  3. Arrhythmias251 topic
  4. Ventricular Tachycardia251 topic
  5. Anticoagulant Therapy201 topic
  6. Atrial Fibrillation201 topic
  7. Cardiac Imaging201 topic
  8. Coronary Artery Disease201 topic
  9. Echocardiography142 topics
  10. Heart Failure142 topics
  11. Cardiac Resynchronization Therapy81 topic
  12. Imaging81 topic
  13. Implantable Cardioverter-Defibrillator81 topic
  14. PET/CT81 topic
  15. Chamber Quantification61 topic
  16. Diastolic Function61 topic
  17. Perfusion Imaging61 topic
  18. Spectroscopy61 topic
  19. French Revolution41 topic
  20. Napoleonic Wars41 topic

Where does Keiko Koyama work?

Keiko Koyama's main affiliation in the publication record is Gunma Prefectural Cardiovascular Center, Japan.

How many publications and citations does Keiko Koyama have?

OpenAlex counts 80 works and 1,796 citations for Keiko Koyama, an h-index of 20, ranking #3,144,663 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.

Discussion

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