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DWI\/ADC was evaluated for signal abnormalities suspicious for inflammation. Agreement between CT and MRI was assessed with Cohen\u2019s <jats:italic>k<\/jats:italic> and weighted <jats:italic>k<\/jats:italic>. Measures of diagnostic accuracy of MRI were calculated.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The agreement between CT and MRI was almost perfect for consolidation (<jats:italic>k<\/jats:italic>\u2009=\u20091.00) and change from prior CT (<jats:italic>k<\/jats:italic>\u2009=\u20090.857); substantial for predominant pattern (<jats:italic>k<\/jats:italic>\u2009=\u20090.764) and interlobular septal thickening (<jats:italic>k<\/jats:italic>\u2009=\u20090.734); and poor for GGOs (<jats:italic>k<\/jats:italic>\u2009=\u20090.339), fibrosis (<jats:italic>k<\/jats:italic>\u2009=\u20090.224), pleural indentation (<jats:italic>k<\/jats:italic>\u2009=\u20090.231), and vessel enlargement (<jats:italic>k<\/jats:italic>\u2009=\u20090.339). Meanwhile, the sensitivity of MRI was high for GGOs (1.00), interlobular septal thickening (1.00), and consolidation (1.00) but poor for fibrotic changes (0.18), pleural indentation (0.23), and vessel enlargement (0.50) and the specificity was overall high. DWI was positive in 46.0% of cases.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>The agreement between MRI and CT was overall good. MRI was very sensitive for GGOs, consolidation and interlobular septal thickening and overall specific for most findings. DWI could be a reputable imaging biomarker of inflammatory activity.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s11547-021-01390-4","type":"journal-article","created":{"date-parts":[[2021,7,12]],"date-time":"2021-07-12T13:03:09Z","timestamp":1626094989000},"page":"1273-1281","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Cross-sectional analysis of follow-up chest MRI and chest CT scans in patients previously affected by COVID-19"],"prefix":"10.1007","volume":"126","author":[{"given":"Martina","family":"Pecoraro","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefano","family":"Cipollari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Livia","family":"Marchitelli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emanuele","family":"Messina","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maurizio","family":"Del Monte","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicola","family":"Galea","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Rosa","family":"Ciardi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marco","family":"Francone","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlo","family":"Catalano","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8466-918X","authenticated-orcid":false,"given":"Valeria","family":"Panebianco","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,7,12]]},"reference":[{"key":"1390_CR1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.20.22954","author":"Y Li","year":"2020","unstructured":"Li Y, Xia L (2020) Coronavirus disease 2019 (COVID-19): role of chest CT in diagnosis and management. 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