{"id":"https://openalex.org/W1967982272","doi":"https://doi.org/10.1016/0002-8703(92)90414-q","title":"Quantification of mitral regurgitation with the proximal flow convergence method: A clinical study","display_name":"Quantification of mitral regurgitation with the proximal flow convergence method: A clinical study","publication_year":1992,"publication_date":"1992-11-01","ids":{"openalex":"https://openalex.org/W1967982272","doi":"https://doi.org/10.1016/0002-8703(92)90414-q","mag":"1967982272","pmid":"https://pubmed.ncbi.nlm.nih.gov/1442498"},"language":"en","primary_location":{"id":"doi:10.1016/0002-8703(92)90414-q","doi":"https://doi.org/10.1016/0002-8703(92)90414-q","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0002-8703(92)90414-q","pdf_url":null,"source":{"id":"https://openalex.org/S46995015","display_name":"American Heart Journal","issn_l":"0002-8703","issn":["0002-8703","1097-6744"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Heart Journal","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5016282257","display_name":"J.Miguel Rivera","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jose M. Rivera","raw_affiliation_strings":["Noninvasive Cardiac Laboratory, Massachusetts General Hospital, Boston","Harvard Medical School, Boston, Mass. USA","Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital, Boston","institution_ids":["https://openalex.org/I4210087915"]},{"raw_affiliation_string":"Harvard Medical School, Boston, Mass. USA","institution_ids":["https://openalex.org/I136199984"]},{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA","institution_ids":["https://openalex.org/I4210087915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091082546","display_name":"Pieter M. Vandervoort","orcid":"https://orcid.org/0000-0001-7031-6500","observed_orcids":["https://orcid.org/0000-0001-7031-6500"]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Pieter M. Vandervoort","raw_affiliation_strings":["Harvard Medical School, Boston, Mass. USA","Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard Medical School, Boston, Mass. USA","institution_ids":["https://openalex.org/I136199984"]},{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA","institution_ids":["https://openalex.org/I4210087915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082842184","display_name":"David H. Thoreau","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David H. Thoreau","raw_affiliation_strings":["Harvard Medical School, Boston, Mass. USA","Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard Medical School, Boston, Mass. USA","institution_ids":["https://openalex.org/I136199984"]},{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA","institution_ids":["https://openalex.org/I4210087915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003717488","display_name":"Robert A. Levine","orcid":"https://orcid.org/0000-0002-9484-8218","observed_orcids":["https://orcid.org/0000-0002-9484-8218"]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Robert A. Levine","raw_affiliation_strings":["Harvard Medical School, Boston, Mass. USA","Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard Medical School, Boston, Mass. USA","institution_ids":["https://openalex.org/I136199984"]},{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA","institution_ids":["https://openalex.org/I4210087915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076064062","display_name":"Arthur E. Weyman","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Arthur E. Weyman","raw_affiliation_strings":["Harvard Medical School, Boston, Mass. USA","Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard Medical School, Boston, Mass. USA","institution_ids":["https://openalex.org/I136199984"]},{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA","institution_ids":["https://openalex.org/I4210087915"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5022830903","display_name":"James D. Thomas","orcid":"https://orcid.org/0000-0002-8132-2903","observed_orcids":["https://orcid.org/0000-0002-8132-2903"]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"James D. Thomas","raw_affiliation_strings":["Harvard Medical School, Boston, Mass. USA","Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard Medical School, Boston, Mass. USA","institution_ids":["https://openalex.org/I136199984"]},{"raw_affiliation_string":"Noninvasive Cardiac Laboratory, Massachusetts General Hospital Boston, Mass. USA","institution_ids":["https://openalex.org/I4210087915"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5022830903"],"corresponding_institution_ids":["https://openalex.org/I136199984","https://openalex.org/I4210087915"],"apc_list":{"value":4070,"currency":"USD","value_usd":4070},"apc_paid":null,"fwci":7.351,"has_fulltext":false,"cited_by_count":98,"citation_normalized_percentile":{"value":0.97286776,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":99},"biblio":{"volume":"124","issue":"5","first_page":"1289","last_page":"1296"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10172","display_name":"Cardiac Valve Diseases and Treatments","score":0.9970999956130981,"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"}},"topics":[{"id":"https://openalex.org/T10172","display_name":"Cardiac Valve Diseases and Treatments","score":0.9970999956130981,"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/T10821","display_name":"Cardiovascular Function and Risk Factors","score":0.0020000000949949026,"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/T10372","display_name":"Cardiac Imaging and Diagnostics","score":0.00019999999494757503,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/mitral-regurgitation","display_name":"mitral regurgitation","score":0.9980000257492065},{"id":"https://openalex.org/keywords/regurgitation-quantification","display_name":"regurgitation quantification","score":0.7680000066757202},{"id":"https://openalex.org/keywords/regurgitant-fraction","display_name":"regurgitant fraction","score":0.9990000128746033},{"id":"https://openalex.org/keywords/color-flow-doppler","display_name":"color flow Doppler","score":0.8420000076293945},{"id":"https://openalex.org/keywords/two-dimensional-echocardiography","display_name":"two-dimensional echocardiography","score":0.8180000185966492},{"id":"https://openalex.org/keywords/atrial-fibrillation","display_name":"atrial fibrillation","score":0.9480000138282776}],"concepts":[{"id":"https://openalex.org/C2778793143","wikidata":"https://www.wikidata.org/wiki/Q1930043","display_name":"Regurgitant fraction","level":4,"score":0.7792840003967285},{"id":"https://openalex.org/C2775914520","wikidata":"https://www.wikidata.org/wiki/Q12335414","display_name":"Sinus rhythm","level":3,"score":0.7771725654602051},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.7607239484786987},{"id":"https://openalex.org/C2993373945","wikidata":"https://www.wikidata.org/wiki/Q268292","display_name":"Mitral regurgitation","level":2,"score":0.6877606511116028},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.6343995332717896},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.587760329246521},{"id":"https://openalex.org/C80461066","wikidata":"https://www.wikidata.org/wiki/Q1698533","display_name":"Stroke volume","level":4,"score":0.5592784881591797},{"id":"https://openalex.org/C2780168065","wikidata":"https://www.wikidata.org/wiki/Q1930043","display_name":"Regurgitation (circulation)","level":2,"score":0.5338576436042786},{"id":"https://openalex.org/C2779161974","wikidata":"https://www.wikidata.org/wiki/Q815819","display_name":"Atrial fibrillation","level":2,"score":0.498612642288208},{"id":"https://openalex.org/C2777543888","wikidata":"https://www.wikidata.org/wiki/Q369939","display_name":"Mitral valve","level":2,"score":0.45471808314323425},{"id":"https://openalex.org/C78085059","wikidata":"https://www.wikidata.org/wiki/Q641303","display_name":"Ejection fraction","level":3,"score":0.33084166049957275},{"id":"https://openalex.org/C2989005","wikidata":"https://www.wikidata.org/wiki/Q214963","display_name":"Nuclear medicine","level":1,"score":0.3225703835487366},{"id":"https://openalex.org/C2778198053","wikidata":"https://www.wikidata.org/wiki/Q181754","display_name":"Heart failure","level":2,"score":0.08435884118080139}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000369","descriptor_name":"Aged, 80 and over","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008943","descriptor_name":"Mitral Valve","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":true},{"descriptor_ui":"D008944","descriptor_name":"Mitral Valve Insufficiency","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":false},{"descriptor_ui":"D008944","descriptor_name":"Mitral Valve Insufficiency","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":true},{"descriptor_ui":"D011237","descriptor_name":"Predictive Value of Tests","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012039","descriptor_name":"Regional Blood Flow","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012044","descriptor_name":"Regression Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013318","descriptor_name":"Stroke Volume","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015150","descriptor_name":"Echocardiography, Doppler","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015203","descriptor_name":"Reproducibility of Results","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1016/0002-8703(92)90414-q","doi":"https://doi.org/10.1016/0002-8703(92)90414-q","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0002-8703(92)90414-q","pdf_url":null,"source":{"id":"https://openalex.org/S46995015","display_name":"American Heart Journal","issn_l":"0002-8703","issn":["0002-8703","1097-6744"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Heart Journal","raw_type":"journal-article"},{"id":"pmid:1442498","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1442498","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American heart journal","raw_type":"Comparative Study"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3","score":0.9391000270843506}],"study_designs":[{"display_name":"Observational Study","id":"https://openalex.org/study-designs/observational-study"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":41,"referenced_works":["https://openalex.org/W1963553290","https://openalex.org/W1966682790","https://openalex.org/W1972082231","https://openalex.org/W1972801551","https://openalex.org/W1976445120","https://openalex.org/W1976730301","https://openalex.org/W1980248261","https://openalex.org/W1985786126","https://openalex.org/W2001000446","https://openalex.org/W2002342130","https://openalex.org/W2003489087","https://openalex.org/W2007165746","https://openalex.org/W2012466551","https://openalex.org/W2021504902","https://openalex.org/W2022612326","https://openalex.org/W2027040058","https://openalex.org/W2030198957","https://openalex.org/W2033740178","https://openalex.org/W2038262110","https://openalex.org/W2042835022","https://openalex.org/W2044876511","https://openalex.org/W2048638128","https://openalex.org/W2050217648","https://openalex.org/W2052362924","https://openalex.org/W2055462562","https://openalex.org/W2056771089","https://openalex.org/W2062398270","https://openalex.org/W2068322473","https://openalex.org/W2072752472","https://openalex.org/W2078393332","https://openalex.org/W2095041603","https://openalex.org/W2096743139","https://openalex.org/W2108703437","https://openalex.org/W2125249803","https://openalex.org/W2135964513","https://openalex.org/W2141531460","https://openalex.org/W2508636625","https://openalex.org/W3210603204","https://openalex.org/W4243454557","https://openalex.org/W6641030993","https://openalex.org/W6676355977"],"related_works":["https://openalex.org/W2254872239","https://openalex.org/W2113319736","https://openalex.org/W2400688218","https://openalex.org/W2471873829","https://openalex.org/W1970602559","https://openalex.org/W2062398270","https://openalex.org/W1979510882","https://openalex.org/W1964615493","https://openalex.org/W2091022696","https://openalex.org/W2132946413"],"abstract_inverted_index":null,"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":7},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}
