{"id":"https://openalex.org/A5014789395","orcid":null,"observed_orcids":[],"display_name":"Kagami Nagai","raw_author_names":["K Nagai","K. Nagai","Kagami NAGAI","Kagami Nagai","Nagai Kagami","kagami Nagai"],"full_name":"Kagami Nagai","works_count":122,"cited_by_count":2244,"summary_stats":{"2yr_mean_citedness":0.3333333333333333,"h_index":19,"i10_index":27},"ids":{"openalex":"https://openalex.org/A5014789395","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":[2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003,2002,2001,2000,1999,1998,1997,1996,1995,1994,1993,1991,1989,1987,1986]},{"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":[2003]},{"institution":{"id":"https://openalex.org/I3020605285","ror":"https://ror.org/04eqd2f30","display_name":"Tokyo Metropolitan Komagome Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I3020605285"]},"years":[1990]},{"institution":{"id":"https://openalex.org/I4210094747","ror":"https://ror.org/005xkwy83","display_name":"Tokyo Medical Center","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210094747","https://openalex.org/I4210137409"]},"years":[2003]},{"institution":{"id":"https://openalex.org/I4210136522","ror":"https://ror.org/03kjjhe36","display_name":"Tokyo Women's Medical University","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210136522"]},"years":[2003]},{"institution":{"id":"https://openalex.org/I4210141341","ror":"https://ror.org/037wv7h91","display_name":"Ohta Nishinouchi Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210141341"]},"years":[1997]},{"institution":{"id":"https://openalex.org/I4210161548","ror":"https://ror.org/058548196","display_name":"Institute of Science Tokyo Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210161548","https://openalex.org/I4400009020"]},"years":[2008,2007,2006]},{"institution":{"id":"https://openalex.org/I4400009020","ror":"https://ror.org/05dqf9946","display_name":"Institute of Science Tokyo","country_code":"JP","type":"education","lineage":["https://openalex.org/I4400009020"]},"years":[2026,2025]},{"institution":{"id":"https://openalex.org/I4405285273","ror":"https://ror.org/053hhpd64","display_name":"National Cancer Center Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210087348","https://openalex.org/I4405285273"]},"years":[2003]},{"institution":{"id":"https://openalex.org/I4405287541","ror":"https://ror.org/05fd4mq57","display_name":"National Cancer Center Research Institute","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210087348","https://openalex.org/I4405287541"]},"years":[2003]}],"last_known_institutions":[{"id":"https://openalex.org/I4400009020","ror":"https://ror.org/05dqf9946","display_name":"Institute of Science Tokyo","country_code":"JP","type":"education","lineage":["https://openalex.org/I4400009020"]}],"topics":[{"id":"https://openalex.org/T10619","display_name":"Esophageal Cancer Research and Treatment","count":99,"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/T10696","display_name":"Gastric Cancer Management and Outcomes","count":75,"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/T11658","display_name":"Esophageal and GI Pathology","count":72,"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/T10307","display_name":"Head and Neck Cancer Studies","count":17,"subfield":{"id":"https://openalex.org/subfields/2733","display_name":"Otorhinolaryngology"},"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/T10671","display_name":"Gastroesophageal reflux and treatments","count":11,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"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/T10619","display_name":"Esophageal Cancer Research and Treatment","value":0.0003678,"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/T11658","display_name":"Esophageal and GI Pathology","value":0.0002842,"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/T10696","display_name":"Gastric Cancer Management and Outcomes","value":0.0001632,"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/T10671","display_name":"Gastroesophageal reflux and treatments","value":6.2e-05,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"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/T14078","display_name":"Multiple and Secondary Primary Cancers","value":4.9e-05,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"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":0.9895293712615967},{"id":"2779742542","wikidata":"https://www.wikidata.org/wiki/Q372701","display_name":"Esophageal cancer","score":0.7871242165565491},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.7808719277381897},{"id":"121608353","wikidata":"https://www.wikidata.org/wiki/Q12078","display_name":"Cancer","score":0.6718762516975403},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.6706640720367432}],"counts_by_year":[{"year":1986,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1987,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1989,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1990,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":1994,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1996,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":5,"oa_works_count":2,"cited_by_count":0},{"year":1998,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2000,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2002,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2003,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2005,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":2006,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":6,"oa_works_count":2,"cited_by_count":0},{"year":2008,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2009,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2011,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":6,"oa_works_count":2,"cited_by_count":100},{"year":2013,"works_count":5,"oa_works_count":2,"cited_by_count":98},{"year":2014,"works_count":8,"oa_works_count":5,"cited_by_count":114},{"year":2015,"works_count":10,"oa_works_count":8,"cited_by_count":118},{"year":2016,"works_count":1,"oa_works_count":0,"cited_by_count":121},{"year":2017,"works_count":3,"oa_works_count":1,"cited_by_count":105},{"year":2018,"works_count":2,"oa_works_count":0,"cited_by_count":96},{"year":2019,"works_count":4,"oa_works_count":1,"cited_by_count":118},{"year":2020,"works_count":1,"oa_works_count":1,"cited_by_count":128},{"year":2021,"works_count":4,"oa_works_count":2,"cited_by_count":120},{"year":2022,"works_count":1,"oa_works_count":0,"cited_by_count":68},{"year":2023,"works_count":2,"oa_works_count":1,"cited_by_count":87},{"year":2024,"works_count":1,"oa_works_count":1,"cited_by_count":82},{"year":2025,"works_count":1,"oa_works_count":0,"cited_by_count":67},{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":67}],"display_name_alternatives":["K Nagai","K. Nagai","Kagami NAGAI","Kagami Nagai","Nagai Kagami","kagami Nagai"],"block_key":"k nagai","works_api_url":"https://api.openalex.org/works?filter=author.id:A5014789395","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5014789395","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}