{"id":"https://openalex.org/A5110111982","orcid":null,"observed_orcids":[],"display_name":"Kiyoshi Koizumi","raw_author_names":["K Koizumi","KIYOSHI KOIZUMI","Kiyoshi KOIZUMI","Kiyoshi Koizumi","Koizumi, Kiyoshi"],"full_name":"Koizumi, Kiyoshi","works_count":322,"cited_by_count":3721,"summary_stats":{"2yr_mean_citedness":0.5,"h_index":34,"i10_index":114},"ids":{"openalex":"https://openalex.org/A5110111982","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I10091056","ror":"https://ror.org/02hwp6a56","display_name":"Kanazawa University","country_code":"JP","type":"education","lineage":["https://openalex.org/I10091056"]},"years":[1988,1986,1982,1980,1979,1978]},{"institution":{"id":"https://openalex.org/I113306721","ror":"https://ror.org/03t78wx29","display_name":"Hiroshima University","country_code":"JP","type":"education","lineage":["https://openalex.org/I113306721"]},"years":[1986]},{"institution":{"id":"https://openalex.org/I158929114","ror":"https://ror.org/00k5j5c86","display_name":"Tokyo Medical University","country_code":"JP","type":"education","lineage":["https://openalex.org/I158929114"]},"years":[2018,2014,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003,2002,2001,2000,1999,1998]},{"institution":{"id":"https://openalex.org/I203951103","ror":"https://ror.org/02kn6nx58","display_name":"Keio University","country_code":"JP","type":"education","lineage":["https://openalex.org/I203951103"]},"years":[2010,2004,2003,2000]},{"institution":{"id":"https://openalex.org/I204250578","ror":"https://ror.org/04gyf1771","display_name":"University of California, Irvine","country_code":"US","type":"education","lineage":["https://openalex.org/I204250578"]},"years":[1997]},{"institution":{"id":"https://openalex.org/I205349734","ror":"https://ror.org/02e16g702","display_name":"Hokkaido University","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]},"years":[1964,1963]},{"institution":{"id":"https://openalex.org/I4210089534","ror":"https://ror.org/00ceh2v36","display_name":"Hiratsuka City Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210089534"]},"years":[2005,2004,2003]},{"institution":{"id":"https://openalex.org/I4210090177","ror":"https://ror.org/0093xcb35","display_name":"Ashikaga Red Cross Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I2799517759","https://openalex.org/I4210090177"]},"years":[2026,2025,2024,2023,2022,2020,2019,2018]},{"institution":{"id":"https://openalex.org/I4210094490","ror":"https://ror.org/00m8adh64","display_name":"Municipal Tsuruga Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210094490"]},"years":[1983]},{"institution":{"id":"https://openalex.org/I4210094737","ror":"https://ror.org/00vpv1x26","display_name":"Tokyo Medical University Hachioji Medical Center","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210094737"]},"years":[2021,2018,2017,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2004,2003,2002,2001,1999]},{"institution":{"id":"https://openalex.org/I4210104330","ror":"https://ror.org/00xsdn005","display_name":"Kanazawa University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210104330"]},"years":[1981]},{"institution":{"id":"https://openalex.org/I4210108955","ror":"https://ror.org/012e6rh19","display_name":"Tokyo Medical University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210108955"]},"years":[2017,2015,2013]},{"institution":{"id":"https://openalex.org/I4210112011","ror":"https://ror.org/022tqjv17","display_name":"University of Yamanashi Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210112011"]},"years":[1997,1993,1992,1989]},{"institution":{"id":"https://openalex.org/I4210118675","ror":"https://ror.org/025bm0k33","display_name":"Kawasaki Municipal Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210118675"]},"years":[2004]},{"institution":{"id":"https://openalex.org/I4210123464","ror":"https://ror.org/03a2szg51","display_name":"Saiseikai Utsunomiya hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210123464"]},"years":[2016,2012,2008,2007,2006]},{"institution":{"id":"https://openalex.org/I4210123465","ror":"https://ror.org/03a4d7t12","display_name":"Saitama Cancer Center","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210123465"]},"years":[1998]},{"institution":{"id":"https://openalex.org/I4210132193","ror":"https://ror.org/03fvwxc59","display_name":"National Center For Child Health and Development","country_code":"JP","type":"government","lineage":["https://openalex.org/I4210132193"]},"years":[2014]},{"institution":{"id":"https://openalex.org/I4210132452","ror":"https://ror.org/03ftky336","display_name":"Saitama International Medical Center","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210132452"]},"years":[2008]},{"institution":{"id":"https://openalex.org/I4210154031","ror":"https://ror.org/04y6ges66","display_name":"Nippon Medical School Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210154031"]},"years":[2012,2010,2008]},{"institution":{"id":"https://openalex.org/I4210159634","ror":"https://ror.org/059p4v436","display_name":"Kanazawa Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210132540","https://openalex.org/I4210159634"]},"years":[1979,1978]},{"institution":{"id":"https://openalex.org/I4405257455","ror":"https://ror.org/059r0wf81","display_name":"Aidu Chuo Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405257455"]},"years":[2022,2021,2020,2016,2014]},{"institution":{"id":"https://openalex.org/I53888640","ror":"https://ror.org/02e4qbj88","display_name":"National Defense Medical College","country_code":"JP","type":"education","lineage":["https://openalex.org/I53888640"]},"years":[1999]},{"institution":{"id":"https://openalex.org/I66906201","ror":"https://ror.org/059x21724","display_name":"University of Yamanashi","country_code":"JP","type":"education","lineage":["https://openalex.org/I66906201"]},"years":[1998,1997,1996,1995,1994,1993,1992,1989]},{"institution":{"id":"https://openalex.org/I80188885","ror":"https://ror.org/00krab219","display_name":"Nippon Medical School","country_code":"JP","type":"education","lineage":["https://openalex.org/I80188885"]},"years":[2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003,2002,2001,1999,1998,1997,1996,1995,1994,1992,1991,1990,1989,1987,1984,1979]},{"institution":{"id":"https://openalex.org/I8588240","ror":"https://ror.org/04zb31v77","display_name":"Saitama Medical University","country_code":"JP","type":"education","lineage":["https://openalex.org/I8588240"]},"years":[2008]},{"institution":{"id":"https://openalex.org/I922474255","ror":"https://ror.org/044vy1d05","display_name":"Tokushima University","country_code":"JP","type":"education","lineage":["https://openalex.org/I922474255"]},"years":[2015]},{"institution":{"id":"https://openalex.org/I98285908","ror":"https://ror.org/035t8zc32","display_name":"The University of Osaka","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]},"years":[2015,1987,1986,1985,1962]}],"last_known_institutions":[{"id":"https://openalex.org/I4210090177","ror":"https://ror.org/0093xcb35","display_name":"Ashikaga Red Cross Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I2799517759","https://openalex.org/I4210090177"]}],"topics":[{"id":"https://openalex.org/T10202","display_name":"Lung Cancer Diagnosis and Treatment","count":58,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory 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/T10522","display_name":"Medical Imaging Techniques and Applications","count":51,"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/T11395","display_name":"Radiopharmaceutical Chemistry and Applications","count":46,"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/T12334","display_name":"Lung Cancer Research Studies","count":33,"subfield":{"id":"https://openalex.org/subfields/2730","display_name":"Oncology"},"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/T10618","display_name":"Aortic Disease and Treatment Approaches","count":26,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory 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/T11395","display_name":"Radiopharmaceutical Chemistry and Applications","value":0.0001788,"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/T12453","display_name":"Infectious Aortic and Vascular Conditions","value":0.0001623,"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/T11271","display_name":"Myasthenia Gravis and Thymoma","value":0.0001525,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"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/T12334","display_name":"Lung Cancer Research Studies","value":0.0001481,"subfield":{"id":"https://openalex.org/subfields/2730","display_name":"Oncology"},"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/T10202","display_name":"Lung Cancer Diagnosis and Treatment","value":0.0001269,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory Medicine"},"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":0.990768551826477},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.8238241672515869},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.8056638240814209},{"id":"142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","score":0.7473329901695251},{"id":"126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","score":0.7334210872650146}],"counts_by_year":[{"year":1962,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1963,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1964,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1978,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":1979,"works_count":5,"oa_works_count":5,"cited_by_count":0},{"year":1980,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1981,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1985,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1986,"works_count":5,"oa_works_count":2,"cited_by_count":0},{"year":1987,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1991,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":1992,"works_count":5,"oa_works_count":4,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":1996,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":1997,"works_count":6,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":1999,"works_count":8,"oa_works_count":3,"cited_by_count":0},{"year":2000,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":12,"oa_works_count":4,"cited_by_count":0},{"year":2002,"works_count":11,"oa_works_count":5,"cited_by_count":0},{"year":2003,"works_count":22,"oa_works_count":7,"cited_by_count":0},{"year":2004,"works_count":17,"oa_works_count":3,"cited_by_count":0},{"year":2005,"works_count":19,"oa_works_count":3,"cited_by_count":0},{"year":2006,"works_count":35,"oa_works_count":13,"cited_by_count":0},{"year":2007,"works_count":10,"oa_works_count":3,"cited_by_count":0},{"year":2008,"works_count":16,"oa_works_count":8,"cited_by_count":0},{"year":2009,"works_count":13,"oa_works_count":4,"cited_by_count":0},{"year":2010,"works_count":10,"oa_works_count":6,"cited_by_count":0},{"year":2011,"works_count":6,"oa_works_count":3,"cited_by_count":0},{"year":2012,"works_count":13,"oa_works_count":5,"cited_by_count":182},{"year":2013,"works_count":6,"oa_works_count":0,"cited_by_count":187},{"year":2014,"works_count":4,"oa_works_count":4,"cited_by_count":185},{"year":2015,"works_count":4,"oa_works_count":2,"cited_by_count":165},{"year":2016,"works_count":2,"oa_works_count":2,"cited_by_count":150},{"year":2017,"works_count":3,"oa_works_count":3,"cited_by_count":159},{"year":2018,"works_count":5,"oa_works_count":5,"cited_by_count":142},{"year":2019,"works_count":1,"oa_works_count":1,"cited_by_count":145},{"year":2020,"works_count":5,"oa_works_count":3,"cited_by_count":145},{"year":2021,"works_count":3,"oa_works_count":3,"cited_by_count":172},{"year":2022,"works_count":6,"oa_works_count":6,"cited_by_count":165},{"year":2023,"works_count":3,"oa_works_count":3,"cited_by_count":111},{"year":2024,"works_count":1,"oa_works_count":0,"cited_by_count":115},{"year":2025,"works_count":4,"oa_works_count":3,"cited_by_count":99},{"year":2026,"works_count":3,"oa_works_count":1,"cited_by_count":61}],"display_name_alternatives":["K Koizumi","KIYOSHI KOIZUMI","Kiyoshi KOIZUMI","Kiyoshi Koizumi","Koizumi, Kiyoshi"],"block_key":"k koizumi","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110111982","updated_date":"2026-11-04T11:47:51","created_date":"2016-06-24T00:00:00"}
