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RSNA-STR-ACR Consensus Statement for COVID-19 CT Patterns: Interreader Agreement in 240 Consecutive Patients and Association With RT-PCR Status.
Silva, Claudio F; Alegria, Julia; Ramos, Cristobal; Verdugo, Jaime; Diaz, Juan-Carlos; Varela, Cristian; Barbe, Mario.
  • Silva CF; From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
  • Alegria J; From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
  • Ramos C; From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
  • Verdugo J; From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
  • Diaz JC; From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
  • Varela C; From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
J Comput Assist Tomogr ; 45(3): 485-489, 2021.
Article in English | MEDLINE | ID: covidwho-1165589
ABSTRACT

PURPOSE:

The aim of this study was to study interreader agreement of the RSNA-STR-ACR (Radiological Society of North America/Society of Thoracic Radiology/American College of Radiology) consensus statement on reporting chest computed tomography (CT) findings related to COVID-19 on a sample of consecutive patients confirmed with reverse transcriptase-polymerase chain reaction (RT-PCR) for severe acute respiratory syndrome coronavirus 2. MATERIALS AND

METHODS:

This institutional review board-approved retrospective study included 240 cases with a mean age of 47.6 ± 15.9 years, ranging from 20 to 90 years, who had a chest CT and RT-PCR performed. Computed tomography images were independently analyzed by 2 thoracic radiologists to identify patterns defined by the RSNA-STR-ACR consensus statement, and concordance was determined with weighted κ tests. Also, CT findings and CT severity scores were tabulated and compared.

RESULTS:

Of the 240 cases, 118 had findings on CT. The most frequent on the RT-PCR-positive group were areas of ground-glass opacities (80.5%), crazy-paving pattern (32.2%), and rounded pseudonodular ground-glass opacities (22.9%). Regarding the CT patterns, the most frequent in the RT-PCR-positive group was typical in 75.9%, followed by negative in 17.1%. The interreader agreement was 0.90 (95% confidence interval, 0.80-0.96) in this group. The CT severity score had a mean difference of -0.07 (95% confidence interval, -0.48 to 0.34) among the readers, showing no significant differences regarding visual estimation.

CONCLUSIONS:

The RSNA-STR-ACR consensus statement on reporting chest CT patterns for COVID-19 presents a high interreader agreement, with the typical pattern being more frequently associated with RT-PCR-positive examinations.
Subject(s)

Full text: Available Collection: International databases Database: MEDLINE Main subject: Radiographic Image Interpretation, Computer-Assisted / Tomography, X-Ray Computed / Reverse Transcriptase Polymerase Chain Reaction / COVID-19 Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adult / Aged / Female / Humans / Male / Middle aged / Young adult Language: English Journal: J Comput Assist Tomogr Year: 2021 Document Type: Article Affiliation country: RCT.0000000000001162

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Radiographic Image Interpretation, Computer-Assisted / Tomography, X-Ray Computed / Reverse Transcriptase Polymerase Chain Reaction / COVID-19 Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adult / Aged / Female / Humans / Male / Middle aged / Young adult Language: English Journal: J Comput Assist Tomogr Year: 2021 Document Type: Article Affiliation country: RCT.0000000000001162