{"id":"https://openalex.org/A5113438994","orcid":null,"observed_orcids":[],"display_name":"Koshi Matsuyama","raw_author_names":["KOSHI MATSUYAMA","Koshi MATSUYAMA","Koshi Matsuyama"],"full_name":"Koshi Matsuyama","works_count":29,"cited_by_count":1067,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":13,"i10_index":14},"ids":{"openalex":"https://openalex.org/A5113438994","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4405254461","ror":"https://ror.org/01tz05n88","display_name":"Omuta Tenryo Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405254461"]},"years":[2016]},{"institution":{"id":"https://openalex.org/I96036126","ror":"https://ror.org/02cgss904","display_name":"Kumamoto University","country_code":"JP","type":"education","lineage":["https://openalex.org/I96036126"]},"years":[1990,1989,1988,1987,1986,1984]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10372","display_name":"Cardiac Imaging and Diagnostics","count":10,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10193","display_name":"Coronary Interventions and Diagnostics","count":9,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10217","display_name":"Cardiac electrophysiology and arrhythmias","count":7,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10155","display_name":"Nitric Oxide and Endothelin Effects","count":6,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10292","display_name":"Acute Myocardial Infarction Research","count":6,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"topic_share":[{"id":"https://openalex.org/T13381","display_name":"Heart rate and cardiovascular health","value":6.18e-05,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12280","display_name":"Magnesium in Health and Disease","value":4.86e-05,"subfield":{"id":"https://openalex.org/subfields/2916","display_name":"Nutrition and Dietetics"},"field":{"id":"https://openalex.org/fields/29","display_name":"Nursing"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T14486","display_name":"Cardiovascular, Neuropeptides, and Oxidative Stress Research","value":2.42e-05,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10193","display_name":"Coronary Interventions and Diagnostics","value":2.17e-05,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10155","display_name":"Nitric Oxide and Endothelin Effects","value":2e-05,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9596549272537231},{"id":"2778425758","wikidata":"https://www.wikidata.org/wiki/Q180762","display_name":"Angina","score":0.9241911172866821},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.8386645317077637},{"id":"164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","score":0.8341534733772278},{"id":"500558357","wikidata":"https://www.wikidata.org/wiki/Q12152","display_name":"Myocardial infarction","score":0.7868221998214722}],"counts_by_year":[{"year":1981,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1984,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":1986,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1987,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":7,"oa_works_count":3,"cited_by_count":0},{"year":1989,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1990,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":25},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":26},{"year":2016,"works_count":1,"oa_works_count":1,"cited_by_count":32},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":18},{"year":2018,"works_count":1,"oa_works_count":0,"cited_by_count":22},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":23},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":18},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":13}],"display_name_alternatives":["KOSHI MATSUYAMA","Koshi MATSUYAMA","Koshi Matsuyama"],"block_key":"k matsuyama","works_api_url":"https://api.openalex.org/works?filter=author.id:A5113438994","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5113438994","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}
