{"id":"https://openalex.org/A5113820085","orcid":null,"observed_orcids":[],"display_name":"Mamoru Niitsu","raw_author_names":["M Niitsu","MAMORU NIITSU","Mamoru NIITSU","Mamoru Niitsu","Niitsu, Mamoru"],"full_name":"Niitsu, Mamoru","works_count":107,"cited_by_count":1283,"summary_stats":{"2yr_mean_citedness":3.5,"h_index":20,"i10_index":39},"ids":{"openalex":"https://openalex.org/A5113820085","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I125602781","ror":"https://ror.org/051k3eh31","display_name":"Tokyo Medical and Dental University","country_code":"JP","type":"education","lineage":["https://openalex.org/I125602781","https://openalex.org/I4400009020"]},"years":[2024]},{"institution":{"id":"https://openalex.org/I1330342723","ror":"https://ror.org/02qp3tb03","display_name":"Mayo Clinic","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1330342723"]},"years":[1992]},{"institution":{"id":"https://openalex.org/I146399215","ror":"https://ror.org/02956yf07","display_name":"University of Tsukuba","country_code":"JP","type":"education","lineage":["https://openalex.org/I146399215"]},"years":[2004,2003,2002,2001,2000,1999,1998,1996,1995,1994,1992,1991]},{"institution":{"id":"https://openalex.org/I182915172","ror":"https://ror.org/03ayf0c60","display_name":"Japan Nutrition University","country_code":"JP","type":"education","lineage":["https://openalex.org/I182915172"]},"years":[2024]},{"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":[2024]},{"institution":{"id":"https://openalex.org/I4210121151","ror":"https://ror.org/02tyjnv32","display_name":"Saitama Medical University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210121151"]},"years":[2025,2024,2021,2019,2018,2016]},{"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":[2019,2016]},{"institution":{"id":"https://openalex.org/I4405287453","ror":"https://ror.org/05652h953","display_name":"Sports Medicine Research Center, Keio University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I203951103","https://openalex.org/I4405287453"]},"years":[2024]},{"institution":{"id":"https://openalex.org/I4405287574","ror":"https://ror.org/05jtn1j81","display_name":"M&D Data Science Center","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4400009020","https://openalex.org/I4405287574"]},"years":[2024]},{"institution":{"id":"https://openalex.org/I69740276","ror":"https://ror.org/00ws30h19","display_name":"Tokyo Metropolitan University","country_code":"JP","type":"education","lineage":["https://openalex.org/I69740276"]},"years":[2012,2011,2010,2009,2008,2006]},{"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":[2025,2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012]}],"last_known_institutions":[{"id":"https://openalex.org/I4210121151","ror":"https://ror.org/02tyjnv32","display_name":"Saitama Medical University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210121151"]},{"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"]}],"topics":[{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","count":41,"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/T10442","display_name":"Knee injuries and reconstruction techniques","count":25,"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/T10105","display_name":"Osteoarthritis Treatment and Mechanisms","count":13,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"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/T11018","display_name":"Lower Extremity Biomechanics and Pathologies","count":13,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10522","display_name":"Medical Imaging Techniques and Applications","count":11,"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"}}],"topic_share":[{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","value":0.0001031,"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/T12209","display_name":"Bone and Joint Diseases","value":0.0001005,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports 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/T14057","display_name":"Hypertrophic osteoarthropathy and related conditions","value":0.0001003,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"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/T10442","display_name":"Knee injuries and reconstruction techniques","value":9.3e-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/T12603","display_name":"NMR spectroscopy and applications","value":8.16e-05,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9850000143051147},{"id":"143409427","wikidata":"https://www.wikidata.org/wiki/Q161238","display_name":"Magnetic resonance imaging","score":0.8268985748291016},{"id":"105702510","wikidata":"https://www.wikidata.org/wiki/Q514","display_name":"Anatomy","score":0.7508655786514282},{"id":"126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","score":0.715919017791748},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.40744805335998535}],"counts_by_year":[{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1994,"works_count":7,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2001,"works_count":5,"oa_works_count":2,"cited_by_count":0},{"year":2002,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":8,"oa_works_count":1,"cited_by_count":0},{"year":2004,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":2012,"works_count":14,"oa_works_count":1,"cited_by_count":54},{"year":2013,"works_count":3,"oa_works_count":2,"cited_by_count":56},{"year":2014,"works_count":3,"oa_works_count":2,"cited_by_count":66},{"year":2015,"works_count":2,"oa_works_count":2,"cited_by_count":66},{"year":2016,"works_count":4,"oa_works_count":0,"cited_by_count":65},{"year":2017,"works_count":2,"oa_works_count":1,"cited_by_count":54},{"year":2018,"works_count":4,"oa_works_count":2,"cited_by_count":46},{"year":2019,"works_count":4,"oa_works_count":3,"cited_by_count":49},{"year":2020,"works_count":2,"oa_works_count":1,"cited_by_count":56},{"year":2021,"works_count":7,"oa_works_count":7,"cited_by_count":63},{"year":2022,"works_count":2,"oa_works_count":2,"cited_by_count":58},{"year":2023,"works_count":2,"oa_works_count":0,"cited_by_count":73},{"year":2024,"works_count":5,"oa_works_count":4,"cited_by_count":70},{"year":2025,"works_count":1,"oa_works_count":0,"cited_by_count":72},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":61}],"display_name_alternatives":["M Niitsu","MAMORU NIITSU","Mamoru NIITSU","Mamoru Niitsu","Niitsu, Mamoru"],"block_key":"m niitsu","works_api_url":"https://api.openalex.org/works?filter=author.id:A5113820085","awards_count":0,"updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}