{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T15:33:03Z","timestamp":1777476783855,"version":"3.51.4"},"reference-count":27,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2020,11,3]],"date-time":"2020-11-03T00:00:00Z","timestamp":1604361600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Can Assoc Radiol J"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>The RSNA expert consensus statement and CO-RADS reporting system assist radiologists in describing lung imaging findings in a standardized manner in patients under investigation for COVID-19 pneumonia and provide clarity in communication with other healthcare providers. We aim to compare diagnostic performance and inter-\/intra-observer among chest radiologists in the interpretation of RSNA and CO-RADS reporting systems and assess clinician preference.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Chest CT scans of 279 patients with suspected COVID-19 who underwent RT-PCR testing were retrospectively and independently examined by 3 chest radiologists who assigned interpretation according to the RSNA and CO-RADS reporting systems. Inter-\/intra-observer analysis was performed. Diagnostic accuracy of both reporting systems was calculated. 60 clinicians participated in a survey to assess end-user preference of the reporting systems.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Both systems demonstrated almost perfect inter-observer agreement (Fleiss kappa 0.871, P &lt; 0.0001 for RSNA; 0.876, P &lt; 0.0001 for CO-RADS impressions). Intra-observer agreement between the 2 scoring systems using the equivalent categories was almost perfect (Fleiss kappa 0.90-0.92, P &lt; 0.001). Positive predictive values were high, 0.798-0.818 for RSNA and 0.891-0.903 CO-RADS. Negative predictive value were similar, 0.573-0.585 for RSNA and 0.573-0.58 for CO-RADS. Specificity differed between the 2 systems, 68-73% for CO-RADS and 52-58% for RSNA with superior specificity of CO-RADS. Of 60 survey participants, the majority preferred the RSNA reporting system rather than CO-RADS for all options provided (66.7-76.7%; P &lt; 0.05).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>RSNA and CO-RADS reporting systems are consistent and reproducible with near perfect inter-\/intra-observer agreement and excellent positive predictive value. End-users preferred the reporting language in the RSNA system.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0846537120968919","type":"journal-article","created":{"date-parts":[[2020,11,3]],"date-time":"2020-11-03T03:46:45Z","timestamp":1604375205000},"page":"806-813","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":17,"title":["Radiological Society of North America (RSNA) Expert Consensus Statement Related to Chest CT Findings in COVID-19 Versus CO-RADS: Comparison of Reporting System Performance Among Chest Radiologists and End-User Preference"],"prefix":"10.1177","volume":"72","author":[{"given":"Siobhan B.","family":"O\u2019 Neill","sequence":"first","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"},{"name":"University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8168-2159","authenticated-orcid":false,"given":"Danielle","family":"Byrne","sequence":"additional","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"},{"name":"University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nestor L.","family":"M\u00fcller","sequence":"additional","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"},{"name":"University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sabeena","family":"Jalal","sequence":"additional","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Parker","sequence":"additional","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"},{"name":"University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Savvas","family":"Nicolaou","sequence":"additional","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"},{"name":"University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana-Maria","family":"Bilawich","sequence":"additional","affiliation":[{"name":"Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada"},{"name":"University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,11,3]]},"reference":[{"key":"bibr1-0846537120968919","unstructured":"World Health Organization. Published 2020. Accessed May 13, 2020. https:\/\/www.who.int\/dg\/speeches\/detail\/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19-11-march-2020"},{"key":"bibr2-0846537120968919","volume-title":"Global Surveillance for COVID-19 Caused by Human Infection With COVID-19 Virus","author":"World Health Organization","year":"2020"},{"key":"bibr3-0846537120968919","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2020200642"},{"key":"bibr4-0846537120968919","doi-asserted-by":"crossref","unstructured":"Udugama B, Kadhiresan P, Kozlowski HN, et al. 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