{"id":"https://openalex.org/W2737567289","doi":"https://doi.org/10.1016/j.pjnns.2017.07.009","title":"How to avoid false positive hyperdense middle cerebral artery sign detection in ischemic stroke","display_name":"How to avoid false positive hyperdense middle cerebral artery sign detection in ischemic stroke","publication_year":2017,"publication_date":"2017-07-25","ids":{"openalex":"https://openalex.org/W2737567289","doi":"https://doi.org/10.1016/j.pjnns.2017.07.009","mag":"2737567289","pmid":"https://pubmed.ncbi.nlm.nih.gov/28760542"},"language":"en","primary_location":{"id":"doi:10.1016/j.pjnns.2017.07.009","doi":"https://doi.org/10.1016/j.pjnns.2017.07.009","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.pjnns.2017.07.009","pdf_url":"https://www.sciencedirect.com/science/article/pii/S0028384317301706","source":{"id":"https://openalex.org/S85107651","display_name":"Neurologia i Neurochirurgia Polska","issn_l":"0028-3843","issn":["0028-3843","1897-4260"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","medline","norway-1","poland-100","russia-white-list-3"],"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":"Neurologia i Neurochirurgia Polska","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.sciencedirect.com/science/article/pii/S0028384317301706","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5085576519","display_name":"Robert M. Chrzan","orcid":"https://orcid.org/0000-0002-2367-349X","observed_orcids":["https://orcid.org/0000-0002-2367-349X"]},"institutions":[{"id":"https://openalex.org/I126596746","display_name":"Jagiellonian University","ror":"https://ror.org/03bqmcz70","country_code":"PL","type":"education","lineage":["https://openalex.org/I126596746"]}],"countries":["PL"],"is_corresponding":true,"raw_author_name":"Robert Chrzan","raw_affiliation_strings":["Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland. Electronic address: rchrzan@mp.pl","Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland. Electronic address: rchrzan@mp.pl","institution_ids":["https://openalex.org/I126596746"]},{"raw_affiliation_string":"Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland","institution_ids":["https://openalex.org/I126596746"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084655606","display_name":"Agnieszka Gle\u0144","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I126596746","display_name":"Jagiellonian University","ror":"https://ror.org/03bqmcz70","country_code":"PL","type":"education","lineage":["https://openalex.org/I126596746"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Agnieszka Gle\u0144","raw_affiliation_strings":["Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland","institution_ids":["https://openalex.org/I126596746"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5049358985","display_name":"Andrzej Urbanik","orcid":"https://orcid.org/0000-0001-9541-6727","observed_orcids":["https://orcid.org/0000-0001-9541-6727"]},"institutions":[{"id":"https://openalex.org/I126596746","display_name":"Jagiellonian University","ror":"https://ror.org/03bqmcz70","country_code":"PL","type":"education","lineage":["https://openalex.org/I126596746"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Andrzej Urbanik","raw_affiliation_strings":["Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Radiology Department, Jagiellonian University Medical College, Kopernika 19, 31-501 Krak\u00f3w, Poland","institution_ids":["https://openalex.org/I126596746"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5085576519"],"corresponding_institution_ids":["https://openalex.org/I126596746"],"apc_list":null,"apc_paid":null,"fwci":0.7433,"has_fulltext":true,"cited_by_count":13,"citation_normalized_percentile":{"value":0.6888149,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":96},"biblio":{"volume":"51","issue":"5","first_page":"395","last_page":"402"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10227","display_name":"Acute Ischemic Stroke Management","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"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/T10227","display_name":"Acute Ischemic Stroke Management","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"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/T10816","display_name":"Cerebrovascular and Carotid Artery Diseases","score":0.00279999990016222,"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/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","score":0.00039999998989515007,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"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/hyperdense-middle-cerebral-artery-sign","display_name":"hyperdense middle cerebral artery sign","score":0.9940000176429749},{"id":"https://openalex.org/keywords/ischemic-stroke","display_name":"ischemic stroke","score":0.9470000267028809},{"id":"https://openalex.org/keywords/false-positive-detection","display_name":"false positive detection","score":0.9010000228881836},{"id":"https://openalex.org/keywords/middle-cerebral-artery","display_name":"middle cerebral artery","score":0.8149999976158142},{"id":"https://openalex.org/keywords/atherosclerosis","display_name":"atherosclerosis","score":0.746999979019165},{"id":"https://openalex.org/keywords/diagnostic-cut-off-values","display_name":"diagnostic thresholds","score":0.5109999775886536},{"id":"https://openalex.org/keywords/differential-diagnosis","display_name":"differential diagnosis","score":0.41100001335144043}],"concepts":[{"id":"https://openalex.org/C2775841333","wikidata":"https://www.wikidata.org/wiki/Q498179","display_name":"Middle cerebral artery","level":3,"score":0.9184037446975708},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.8695859909057617},{"id":"https://openalex.org/C2780645631","wikidata":"https://www.wikidata.org/wiki/Q671554","display_name":"Stroke (engine)","level":2,"score":0.6230783462524414},{"id":"https://openalex.org/C2781041448","wikidata":"https://www.wikidata.org/wiki/Q75839","display_name":"Cerebral cortex","level":2,"score":0.5939483642578125},{"id":"https://openalex.org/C171614378","wikidata":"https://www.wikidata.org/wiki/Q5064093","display_name":"Cerebral arteries","level":2,"score":0.5064018964767456},{"id":"https://openalex.org/C2777031167","wikidata":"https://www.wikidata.org/wiki/Q498935","display_name":"Anterior cerebral artery","level":4,"score":0.4809072017669678},{"id":"https://openalex.org/C2777348757","wikidata":"https://www.wikidata.org/wiki/Q2346577","display_name":"Cortex (anatomy)","level":2,"score":0.4759809076786041},{"id":"https://openalex.org/C2778394091","wikidata":"https://www.wikidata.org/wiki/Q492482","display_name":"Posterior cerebral artery","level":4,"score":0.4493093490600586},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.43036335706710815},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.388435423374176},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.37285012006759644},{"id":"https://openalex.org/C2989005","wikidata":"https://www.wikidata.org/wiki/Q214963","display_name":"Nuclear medicine","level":1,"score":0.3647996783256531},{"id":"https://openalex.org/C541997718","wikidata":"https://www.wikidata.org/wiki/Q188151","display_name":"Ischemia","level":2,"score":0.1514686644077301},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.07822158932685852},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"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":"D005189","descriptor_name":"False Positive Reactions","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":"D014057","descriptor_name":"Tomography, X-Ray Computed","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D020244","descriptor_name":"Infarction, Middle Cerebral Artery","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":true}],"locations_count":5,"locations":[{"id":"doi:10.1016/j.pjnns.2017.07.009","doi":"https://doi.org/10.1016/j.pjnns.2017.07.009","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.pjnns.2017.07.009","pdf_url":"https://www.sciencedirect.com/science/article/pii/S0028384317301706","source":{"id":"https://openalex.org/S85107651","display_name":"Neurologia i Neurochirurgia Polska","issn_l":"0028-3843","issn":["0028-3843","1897-4260"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","medline","norway-1","poland-100","russia-white-list-3"],"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":"Neurologia i Neurochirurgia Polska","raw_type":"journal-article"},{"id":"pmid:28760542","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/28760542","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":"Neurologia i neurochirurgia polska","raw_type":"Journal Article"},{"id":"pmh:oai:ruj.uj.edu.pl:item/141172","doi":null,"is_oa":true,"landing_page_url":"https://journals.viamedica.pl/neurologia_neurochirurgia_polska/article/view/61268","pdf_url":"http://ruj.uj.edu.pl/bitstreams/7fc74c92-92aa-4511-ad53-2e2c05dfc34e/download","source":{"id":"https://openalex.org/S4306400316","display_name":"Homo Politicus (Academy of Humanities and Economics in Lodz)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"artyku\u0142 w czasopi\u015bmie"},{"id":"pmh:oai:ruj.uj.edu.pl:item/123491","doi":null,"is_oa":true,"landing_page_url":"https://ruj.uj.edu.pl/xmlui/handle/item/123491","pdf_url":null,"source":{"id":"https://openalex.org/S4306401249","display_name":"Jagiellonian University Repository (Jagiellonian University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I126596746","host_organization_name":"Jagiellonian University","host_organization_lineage":["https://openalex.org/I126596746"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:ruj.uj.edu.pl:item/99660","doi":null,"is_oa":false,"landing_page_url":"https://ruj.uj.edu.pl/xmlui/handle/item/99660","pdf_url":null,"source":{"id":"https://openalex.org/S4306400316","display_name":"Homo Politicus (Academy of Humanities and Economics in Lodz)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"artyku\u0142 w czasopi\u015bmie"}],"best_oa_location":{"id":"doi:10.1016/j.pjnns.2017.07.009","doi":"https://doi.org/10.1016/j.pjnns.2017.07.009","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.pjnns.2017.07.009","pdf_url":"https://www.sciencedirect.com/science/article/pii/S0028384317301706","source":{"id":"https://openalex.org/S85107651","display_name":"Neurologia i Neurochirurgia Polska","issn_l":"0028-3843","issn":["0028-3843","1897-4260"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","medline","norway-1","poland-100","russia-white-list-3"],"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":"Neurologia i Neurochirurgia Polska","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":0.9763000011444092,"display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320310970","display_name":"Uniwersytet Jagiello\u0144ski Collegium Medicum","ror":"https://ror.org/03bqmcz70"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2737567289.pdf","grobid_xml":"https://content.openalex.org/works/W2737567289.grobid-xml"},"referenced_works_count":25,"referenced_works":["https://openalex.org/W1519508234","https://openalex.org/W1868615667","https://openalex.org/W1881310984","https://openalex.org/W1886787802","https://openalex.org/W1928287002","https://openalex.org/W1942543528","https://openalex.org/W1974476676","https://openalex.org/W1981367835","https://openalex.org/W1982641237","https://openalex.org/W2001358167","https://openalex.org/W2002874591","https://openalex.org/W2005144667","https://openalex.org/W2023766772","https://openalex.org/W2028386879","https://openalex.org/W2048975530","https://openalex.org/W2055375103","https://openalex.org/W2095603614","https://openalex.org/W2103511772","https://openalex.org/W2106076655","https://openalex.org/W2144460847","https://openalex.org/W2159714000","https://openalex.org/W2168721819","https://openalex.org/W2171165037","https://openalex.org/W2397852834","https://openalex.org/W2533460175"],"related_works":["https://openalex.org/W4415902168","https://openalex.org/W2028386879","https://openalex.org/W2533460175","https://openalex.org/W1989357981","https://openalex.org/W3196690249","https://openalex.org/W1998669295","https://openalex.org/W2335000692","https://openalex.org/W2242718637","https://openalex.org/W2150055197","https://openalex.org/W7110663830"],"abstract_inverted_index":{"OBJECTIVES:":[0],"The":[1,50,89,177,202,224],"aim":[2],"of":[3,30,54,76,93,99,112,179,191,204],"the":[4,31,39,63,73,77,86,109,121,131,134,140,154,157,163,189],"study":[5],"was":[6],"to":[7,10,26,38,85,120,214,222],"find":[8],"how":[9],"differentiate":[11,215],"hyperdense":[12,74,87,141,205],"middle":[13,45],"cerebral":[14,46,100],"artery":[15,47],"sign":[16],"(HMCAS)":[17],"in":[18,41,68,72,104,108,139,162,184,198],"stroke":[19,132,185],"patients":[20,56,95],"from":[21,124,217],"asymmetric":[22,218],"hyperdensity":[23,219],"not":[24,220],"related":[25,221],"stroke,":[27,59],"by":[28],"comparison":[29],"CT":[32,207],"density":[33,182,196,209],"values":[34,40,136,159],"typical":[35],"for":[36],"HMCAS":[37,61,216],"normal":[42],"or":[43,126],"atherosclerotic":[44],"(MCA).":[48],"METHODS:":[49],"group":[51,91,133,156],"analyzed":[52],"consisted":[53,92],"100":[55,94],"with":[57,96],"ischemic":[58],"presenting":[60],"on":[62],"admission":[64],"CT.":[65],"Density":[66,102],"measurements":[67,103],"HU":[69,105],"were":[70,106],"performed":[71],"segment":[75,111],"involved":[78],"MCA,":[79,81,116],"contralateral":[80,145,169],"brain":[82,117,149,173],"cortex":[83,118,150,174],"adjacent":[84,119],"MCA.":[88,128],"control":[90,155],"no":[97],"symptoms":[98],"stroke.":[101,223],"performed:":[107],"M1":[110],"right":[113,125],"and":[114,230,238],"left":[115,127],"more":[122,164,192],"dense":[123,165,193],"RESULTS:":[129],"In":[130,153],"median":[135,158],"obtained":[137,160],"were:":[138,161],"MCA":[142,146,166,170,181,195,206],"59":[143],"HU,":[144,148,168,172],"41":[147],"36":[151],"HU.":[152,176],"43":[167],"40":[171],"34":[175],"range":[178,190],"HMCAS/contralateral":[180],"ratios":[183,197],"only":[186],"slightly":[187],"overlapped":[188],"MCA/contralateral":[194],"non-stroke":[199],"patients.":[200],"CONCLUSION:":[201],"ratio":[203],"density/contralateral":[208],"is":[210],"a":[211],"good":[212],"tool":[213],"threshold":[225],"\u22651.16":[226],"provided":[227,235],"100%":[228,239],"sensitivity":[229,237],"97%":[231],"specificity,":[232],"whereas":[233],"\u22651.22":[234],"94%":[236],"specificity.":[240]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2017-07-31T00:00:00"}
