{"id":"https://openalex.org/W2136378753","doi":"https://doi.org/10.2214/ajr.09.2580","title":"CT Findings of Sigmoid Volvulus","display_name":"CT Findings of Sigmoid Volvulus","publication_year":2009,"publication_date":"2009-12-22","ids":{"openalex":"https://openalex.org/W2136378753","doi":"https://doi.org/10.2214/ajr.09.2580","mag":"2136378753","pmid":"https://pubmed.ncbi.nlm.nih.gov/20028915"},"language":"en","primary_location":{"id":"doi:10.2214/ajr.09.2580","doi":"https://doi.org/10.2214/ajr.09.2580","is_oa":false,"landing_page_url":"https://doi.org/10.2214/ajr.09.2580","pdf_url":null,"source":{"id":"https://openalex.org/S161085503","display_name":"American Journal of Roentgenology","issn_l":"0002-9580","issn":["0002-9580","0361-803X","1546-3141"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","doyens","jufo-1","ki-jl-2","medline","norway-2","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315781","host_organization_name":"American Roentgen Ray Society","host_organization_lineage":["https://openalex.org/P4310315781"],"host_organization_lineage_names":["American Roentgen Ray Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Roentgenology","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/A5057297478","display_name":"Jeffrey M. Levsky","orcid":"https://orcid.org/0000-0002-9944-2524","observed_orcids":["https://orcid.org/0000-0002-9944-2524"]},"institutions":[{"id":"https://openalex.org/I129975664","display_name":"Albert Einstein College of Medicine","ror":"https://ror.org/05cf8a891","country_code":"US","type":"education","lineage":["https://openalex.org/I129975664","https://openalex.org/I4210112371"]},{"id":"https://openalex.org/I1335289525","display_name":"Montefiore Medical Center","ror":"https://ror.org/044ntvm43","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1335289525","https://openalex.org/I19772626"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jeffrey M. Levsky","raw_affiliation_strings":["All authors: Department of Radiology, Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St., Bronx, NY 10467-2490"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"All authors: Department of Radiology, Montefiore Medical Center, Albert Einstein College of Medicine, 111 E 210th St., Bronx, NY 10467-2490","institution_ids":["https://openalex.org/I129975664","https://openalex.org/I1335289525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006025206","display_name":"Elana I. Den","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19772626","display_name":"Yeshiva University","ror":"https://ror.org/045x93337","country_code":"US","type":"education","lineage":["https://openalex.org/I19772626"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Elana I. Den","raw_affiliation_strings":["Yeshiva University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Yeshiva University","institution_ids":["https://openalex.org/I19772626"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111679495","display_name":"Ronelle A. DuBrow","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19772626","display_name":"Yeshiva University","ror":"https://ror.org/045x93337","country_code":"US","type":"education","lineage":["https://openalex.org/I19772626"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ronelle A. DuBrow","raw_affiliation_strings":["Yeshiva University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Yeshiva University","institution_ids":["https://openalex.org/I19772626"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108557552","display_name":"Ellen L. Wolf","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19772626","display_name":"Yeshiva University","ror":"https://ror.org/045x93337","country_code":"US","type":"education","lineage":["https://openalex.org/I19772626"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ellen L. Wolf","raw_affiliation_strings":["Yeshiva University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Yeshiva University","institution_ids":["https://openalex.org/I19772626"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035345253","display_name":"Alla M. Rozenblit","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Alla M. Rozenblit","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":7.7536,"has_fulltext":false,"cited_by_count":135,"citation_normalized_percentile":{"value":0.97506739,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":99},"biblio":{"volume":"194","issue":"1","first_page":"136","last_page":"143"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12150","display_name":"Intestinal Malrotation and Obstruction Disorders","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T12150","display_name":"Intestinal Malrotation and Obstruction Disorders","score":1.0,"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/T11855","display_name":"Gastrointestinal disorders and treatments","score":0.0,"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/T11589","display_name":"Gynecological conditions and treatments","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2729","display_name":"Obstetrics and Gynecology"},"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/sigmoid-volvulus","display_name":"sigmoid volvulus","score":1.0},{"id":"https://openalex.org/keywords/computed-tomography-findings","display_name":"computed tomography findings","score":0.7110000252723694},{"id":"https://openalex.org/keywords/sigmoid-colon","display_name":"sigmoid colon","score":0.4580000042915344},{"id":"https://openalex.org/keywords/coffee-bean-sign","display_name":"coffee bean sign","score":0.7269999980926514},{"id":"https://openalex.org/keywords/scanogram","display_name":"scanogram","score":0.5569999814033508},{"id":"https://openalex.org/keywords/cross-sectional-imaging","display_name":"cross-sectional imaging","score":0.7289999723434448}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9659268856048584},{"id":"https://openalex.org/C2908891590","wikidata":"https://www.wikidata.org/wiki/Q24081864","display_name":"Sigmoid volvulus","level":4,"score":0.7583112120628357},{"id":"https://openalex.org/C81388566","wikidata":"https://www.wikidata.org/wiki/Q526668","display_name":"Sigmoid function","level":3,"score":0.6259890794754028},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.4205719530582428},{"id":"https://openalex.org/C2989005","wikidata":"https://www.wikidata.org/wiki/Q214963","display_name":"Nuclear medicine","level":1,"score":0.3214729130268097},{"id":"https://openalex.org/C2776870353","wikidata":"https://www.wikidata.org/wiki/Q677253","display_name":"Sigmoid colon","level":3,"score":0.29391127824783325},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.19648659229278564},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.10530266165733337},{"id":"https://openalex.org/C2781074409","wikidata":"https://www.wikidata.org/wiki/Q158716","display_name":"Rectum","level":2,"score":0.06822657585144043},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.0},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","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":"D003287","descriptor_name":"Contrast Media","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003974","descriptor_name":"Diatrizoate Meglumine","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":"D007472","descriptor_name":"Iohexol","qualifier_ui":"Q000031","qualifier_name":"analogs & derivatives","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":"D011857","descriptor_name":"Radiographic Image Interpretation, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012189","descriptor_name":"Retrospective Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012810","descriptor_name":"Sigmoid Diseases","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":true},{"descriptor_ui":"D014057","descriptor_name":"Tomography, X-Ray Computed","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D014283","descriptor_name":"Triiodobenzoic Acids","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D045822","descriptor_name":"Intestinal Volvulus","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.2214/ajr.09.2580","doi":"https://doi.org/10.2214/ajr.09.2580","is_oa":false,"landing_page_url":"https://doi.org/10.2214/ajr.09.2580","pdf_url":null,"source":{"id":"https://openalex.org/S161085503","display_name":"American Journal of Roentgenology","issn_l":"0002-9580","issn":["0002-9580","0361-803X","1546-3141"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","doyens","jufo-1","ki-jl-2","medline","norway-2","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315781","host_organization_name":"American Roentgen Ray Society","host_organization_lineage":["https://openalex.org/P4310315781"],"host_organization_lineage_names":["American Roentgen Ray Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Roentgenology","raw_type":"journal-article"},{"id":"pmid:20028915","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/20028915","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":"AJR. American journal of roentgenology","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.9789000153541565,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"sustainable_development_goals_aurora":[],"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":20,"referenced_works":["https://openalex.org/W137856630","https://openalex.org/W193768425","https://openalex.org/W1996240344","https://openalex.org/W2005592184","https://openalex.org/W2009522385","https://openalex.org/W2038284911","https://openalex.org/W2038639489","https://openalex.org/W2068699558","https://openalex.org/W2072341408","https://openalex.org/W2079057534","https://openalex.org/W2079482301","https://openalex.org/W2094887535","https://openalex.org/W2095129669","https://openalex.org/W2117048240","https://openalex.org/W2131524705","https://openalex.org/W2135667526","https://openalex.org/W2153261341","https://openalex.org/W2192749131","https://openalex.org/W2901734855","https://openalex.org/W4244550019"],"related_works":["https://openalex.org/W2038639489","https://openalex.org/W4234387193","https://openalex.org/W3004267074","https://openalex.org/W2415898112","https://openalex.org/W4283749498","https://openalex.org/W2370594221","https://openalex.org/W2068699558","https://openalex.org/W2611422358","https://openalex.org/W2966089507","https://openalex.org/W2072341408"],"abstract_inverted_index":{"OBJECTIVE:":[0],"The":[1,97,138,165],"purpose":[2],"of":[3,11,28,52,63,104,108,118,134,150,157,161,174,179,185,193,207,212,222,258,270,275,279,287],"this":[4],"study":[5],"was":[6,77,189],"to":[7,79],"evaluate":[8],"the":[9,58,64,71,124,158,186,284],"features":[10,242],"sigmoid":[12,29,55,65,116,130,145,159],"volvulus":[13,30,254,288],"on":[14,266],"CT":[15,84,216,241,276],"scanograms":[16,40,80,271],"and":[17,34,41,47,61,81,93,112,128,154,167,177,199,210,272,295],"cross-sectional":[18,42,82,141,201],"images.":[19,83],"MATERIALS":[20],"AND":[21],"METHODS:":[22],"We":[23],"retrospectively":[24],"reviewed":[25],"21":[26,109,119,135,151,162,175,180,194,208,213],"cases":[27],"in":[31,172,191,205,220,245],"15":[32],"men":[33],"six":[35],"women.":[36],"Three":[37],"radiologists":[38],"evaluated":[39],"images":[43],"for":[44,291,298],"several":[45],"classic":[46,262],"two":[48,187],"novel":[49],"imaging":[50,259],"signs":[51,169,188,231,281],"volvulus:":[53],"crossing":[54],"transitions":[56],"(called":[57,70],"X-marks-the-spot":[59,166],"sign)":[60],"folding":[62],"wall":[66],"by":[67,123],"partial":[68],"twisting":[69,294],"split-wall":[72,168,296],"sign).":[73],"A":[74,261],"general":[75],"impression":[76],"assigned":[78],"findings":[85,101,142,202,217],"suggesting":[86,232],"bowel":[87,233],"compromise":[88,234],"were":[89,102,143,170,203,218,243],"compared":[90],"with":[91,226,237,249],"pathologic":[92],"endoscopic":[94],"findings.":[95,229,260],"RESULTS:":[96],"most":[98,139],"sensitive":[99,140],"scanogram":[100,228],"absence":[103],"rectal":[105],"gas":[106],"(19":[107],"cases,":[110,120,136,152,163],"90%)":[111],"an":[113],"inverted-U-shaped":[114],"distended":[115],"(18":[117,160],"86%)":[121],"followed":[122],"coffee":[125],"bean":[126],"sign":[127,290,297],"disproportionate":[129,155],"enlargement":[131,156],"(both":[132],"16":[133,211],"76%).":[137],"one":[144,184,268,273],"colon":[146],"transition":[147],"point":[148],"(20":[149],"95%)":[153],"86%).":[164],"present":[171,190,244],"nine":[173],"(43%)":[176],"11":[178,206],"(52%)":[181,209],"patients,":[182],"but":[183,240],"18":[192],"patients":[195,224,248],"(86%).":[196],"Classic":[197],"radiographic":[198],"definitive":[200,219],"seen":[204],"(76%)":[214],"patients.":[215],"five":[221],"seven":[223],"(71%)":[225],"indeterminate":[227],"Imaging":[230],"correlated":[235],"poorly":[236],"clinical":[238],"ischemia,":[239],"all":[246],"three":[247],"frank":[250],"necrosis.":[251],"CONCLUSION:":[252],"Sigmoid":[253],"has":[255],"a":[256],"spectrum":[257],"appearance":[263],"is":[264],"absent":[265],"approximately":[267],"half":[269],"fourth":[274],"scans.":[277],"Use":[278],"new":[280],"that":[282],"model":[283],"pathophysiologic":[285],"characteristics":[286],"(X-marks-the-spot":[289],"more":[292],"complete":[293],"less":[299],"severe":[300],"twisting)":[301],"may":[302],"improve":[303],"diagnostic":[304],"confidence.":[305]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":7},{"year":2023,"cited_by_count":11},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":13},{"year":2020,"cited_by_count":9},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":11},{"year":2017,"cited_by_count":8},{"year":2016,"cited_by_count":10},{"year":2015,"cited_by_count":10},{"year":2014,"cited_by_count":8},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":7}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}