{"id":"https://openalex.org/A5111611181","orcid":null,"observed_orcids":[],"display_name":"Tadatoshi Takayama","raw_author_names":["T Takayama","Tadatoshi Takayama","Tadotoshi Takayama"],"full_name":"Tadatoshi Takayama","works_count":23,"cited_by_count":2521,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":16,"i10_index":19},"ids":{"openalex":"https://openalex.org/A5111611181","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I137975476","ror":"https://ror.org/0244rem06","display_name":"Shinshu University","country_code":"JP","type":"education","lineage":["https://openalex.org/I137975476"]},"years":[1995]},{"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":[1996,1994,1990]},{"institution":{"id":"https://openalex.org/I74801974","ror":"https://ror.org/057zh3y96","display_name":"The University of Tokyo","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]},"years":[2001,2000,1998,1997]}],"last_known_institutions":[{"id":"https://openalex.org/I74801974","ror":"https://ror.org/057zh3y96","display_name":"The University of Tokyo","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"topics":[{"id":"https://openalex.org/T10073","display_name":"Hepatocellular Carcinoma Treatment and Prognosis","count":13,"subfield":{"id":"https://openalex.org/subfields/2721","display_name":"Hepatology"},"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/T10999","display_name":"Organ Transplantation Techniques and Outcomes","count":12,"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/T10966","display_name":"Liver physiology and pathology","count":11,"subfield":{"id":"https://openalex.org/subfields/2721","display_name":"Hepatology"},"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/T10518","display_name":"Gallbladder and Bile Duct Disorders","count":4,"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/T11364","display_name":"Cholangiocarcinoma and Gallbladder Cancer Studies","count":3,"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"}}],"topic_share":[{"id":"https://openalex.org/T10999","display_name":"Organ Transplantation Techniques and Outcomes","value":4.12e-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/T10073","display_name":"Hepatocellular Carcinoma Treatment and Prognosis","value":3.71e-05,"subfield":{"id":"https://openalex.org/subfields/2721","display_name":"Hepatology"},"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/T10966","display_name":"Liver physiology and pathology","value":3.05e-05,"subfield":{"id":"https://openalex.org/subfields/2721","display_name":"Hepatology"},"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/T11364","display_name":"Cholangiocarcinoma and Gallbladder Cancer Studies","value":2.31e-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/T12460","display_name":"Pediatric Hepatobiliary Diseases and Treatments","value":1.49e-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"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9857172966003418},{"id":"2776909242","wikidata":"https://www.wikidata.org/wiki/Q1514021","display_name":"Hepatectomy","score":0.788109302520752},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.6902688145637512},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.5759111046791077},{"id":"159110652","wikidata":"https://www.wikidata.org/wiki/Q17078201","display_name":"Resection","score":0.5217233896255493}],"counts_by_year":[{"year":1990,"works_count":2,"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":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":6,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":114},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":112},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":103},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":89},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":81},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":105},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":74},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":72},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":74},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":59},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":80},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":55},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":53},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":38},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":16}],"display_name_alternatives":["T Takayama","Tadatoshi Takayama","Tadotoshi Takayama"],"block_key":"t takayama","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111611181","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5111611181","updated_date":"2026-11-12T13:17:38","created_date":"2016-06-24T00:00:00"}