{"id":"https://openalex.org/W67511064","doi":null,"title":"Two-dimensional echocardiographic determination of left ventricular volume, systolic function, and mass. Summary and discussion of the 1989 recommendations of the American Society of Echocardiography.","display_name":"Two-dimensional echocardiographic determination of left ventricular volume, systolic function, and mass. Summary and discussion of the 1989 recommendations of the American Society of Echocardiography.","publication_year":1991,"publication_date":"1991-09-01","ids":{"openalex":"https://openalex.org/W67511064","mag":"67511064","pmid":"https://pubmed.ncbi.nlm.nih.gov/1884497"},"language":"en","primary_location":{"id":"pmid:1884497","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1884497","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":"Circulation","raw_type":"Comparative Study"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["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/A5044541484","display_name":"Nelson B. Schiller","orcid":"https://orcid.org/0000-0001-5489-4378","observed_orcids":["https://orcid.org/0000-0001-5489-4378"]},"institutions":[{"id":"https://openalex.org/I180670191","display_name":"University of California, San Francisco","ror":"https://ror.org/043mz5j54","country_code":"US","type":"education","lineage":["https://openalex.org/I180670191"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"N B Schiller","raw_affiliation_strings":["Echocardiography Laboratory, University of California, San Francisco 94143"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Echocardiography Laboratory, University of California, San Francisco 94143","institution_ids":["https://openalex.org/I180670191"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5044541484"],"corresponding_institution_ids":["https://openalex.org/I180670191"],"apc_list":null,"apc_paid":null,"fwci":3.1821,"has_fulltext":false,"cited_by_count":239,"citation_normalized_percentile":{"value":0.9142129,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":99},"biblio":{"volume":"84","issue":"3 Suppl","first_page":"I280","last_page":"7"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10821","display_name":"Cardiovascular Function and Risk Factors","score":0.9965999722480774,"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/T10821","display_name":"Cardiovascular Function and Risk Factors","score":0.9965999722480774,"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":0.0020000000949949026,"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/T11738","display_name":"Ultrasound in Clinical Applications","score":0.0005000000237487257,"subfield":{"id":"https://openalex.org/subfields/2706","display_name":"Critical Care and Intensive Care Medicine"},"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/two-dimensional-echocardiography","display_name":"two-dimensional echocardiography","score":0.9449999928474426},{"id":"https://openalex.org/keywords/left-ventricular-volume","display_name":"left ventricular volume","score":0.9900000095367432},{"id":"https://openalex.org/keywords/left-ventricular-mass","display_name":"left ventricular mass","score":0.8379999995231628},{"id":"https://openalex.org/keywords/left-ventricular-systolic-function","display_name":"left ventricular systolic function","score":0.9539999961853027},{"id":"https://openalex.org/keywords/image-digitization","display_name":"image digitization","score":0.6069999933242798}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.8456395864486694},{"id":"https://openalex.org/C20556612","wikidata":"https://www.wikidata.org/wiki/Q4469374","display_name":"Volume (thermodynamics)","level":2,"score":0.5438457727432251},{"id":"https://openalex.org/C2993376042","wikidata":"https://www.wikidata.org/wiki/Q2002035","display_name":"Ventricular function","level":2,"score":0.5238097906112671},{"id":"https://openalex.org/C3020038371","wikidata":"https://www.wikidata.org/wiki/Q2002035","display_name":"Ventricular volume","level":4,"score":0.46127840876579285},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.41817545890808105},{"id":"https://openalex.org/C19527891","wikidata":"https://www.wikidata.org/wiki/Q1120908","display_name":"Medical physics","level":1,"score":0.3257306218147278},{"id":"https://openalex.org/C2778198053","wikidata":"https://www.wikidata.org/wiki/Q181754","display_name":"Heart failure","level":2,"score":0.10992008447647095},{"id":"https://openalex.org/C78085059","wikidata":"https://www.wikidata.org/wiki/Q641303","display_name":"Ejection fraction","level":3,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D002306","descriptor_name":"Cardiac Volume","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004452","descriptor_name":"Echocardiography","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006321","descriptor_name":"Heart","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007091","descriptor_name":"Image Processing, Computer-Assisted","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":"D012737","descriptor_name":"Sex Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012955","descriptor_name":"Societies, Medical","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D013318","descriptor_name":"Stroke Volume","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013599","descriptor_name":"Systole","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014481","descriptor_name":"United States","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"pmid:1884497","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1884497","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":"Circulation","raw_type":"Comparative Study"},{"id":"mag:67511064","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1884497","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":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.504800021648407,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W7095405144","https://openalex.org/W2051174939","https://openalex.org/W2990123797","https://openalex.org/W2470305713","https://openalex.org/W2156446554","https://openalex.org/W4237768749","https://openalex.org/W128479157","https://openalex.org/W2094131357","https://openalex.org/W4249955086","https://openalex.org/W2159632698"],"abstract_inverted_index":{"The":[0,15,57],"quantitation":[1,52,75],"of":[2,12,22,33,53,72,79,88],"two-dimensional":[3],"echocardiographic":[4],"images":[5,80],"has":[6,24],"been":[7],"frustrated":[8],"by":[9,18],"the":[10,19,31,34,38,51,70],"lack":[11],"concrete":[13],"recommendations.":[14],"recent":[16,59],"statement":[17],"American":[20],"Society":[21],"Echocardiography":[23],"rectified":[25],"that":[26],"deficiency.":[27],"This":[28],"discussion":[29],"reviews":[30],"recommendations":[32],"Society,":[35],"focusing":[36],"on":[37],"general":[39],"and":[40,50,76,81],"technical":[41],"considerations":[42],"for":[43],"quantitation,":[44],"computational":[45],"equipment,":[46],"cavity":[47],"volume":[48],"measurements,":[49],"left":[54],"ventricular":[55],"mass.":[56],"author's":[58],"experience":[60],"with":[61,95],"directing":[62],"a":[63,89],"quantitative":[64],"laboratory":[65],"is":[66,84,92],"discussed.":[67],"In":[68],"particular,":[69],"advantage":[71],"on-line":[73],"bedside":[74],"mass":[77],"storage":[78],"measured":[82],"parameters":[83],"presented.":[85],"An":[86],"example":[87],"digitized":[90],"study":[91],"given":[93],"along":[94],"measuring":[96],"methodology.":[97]},"counts_by_year":[{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":6},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":10},{"year":2012,"cited_by_count":9}],"updated_date":"2026-11-03T10:50:19.383937","created_date":"2016-06-24T00:00:00"}