Comparison of Chest CT Grading Systems in COVID-19 Pneumonia
Shohei Inui, Ryo Kurokawa, Yudai Nakai, Yusuke Watanabe, Mariko Kurokawa, Keita Sakurai, Akira Fujikawa, Hiroaki Sugiura, Takuya Kawahara, Soon Ho Yoon, Yasuhide Uwabe, Yuto Uchida, Wataru Gonoi, Osamu Abe
Abstract
PURPOSE: To compare the performance and interobserver agreement of the COVID-19 Reporting and Data System (CO-RADS), the COVID-19 imaging reporting and data system (COVID-RADS), the RSNA expert consensus statement, and the British Society of Thoracic Imaging (BSTI) guidance statement. MATERIALS AND METHODS: In this case-control study, total of 100 symptomatic patients suspected of having COVID-19 were included: 50 patients with COVID-19 (59±17 years, 38 men) and 50 patients without COVID-19 (65±24 years, 30 men). Eight radiologists independently scored chest CT images of the cohort according to each reporting system. The area under the receiver operating characteristic curves (AUC) and interobserver agreements were calculated and statistically compared across the systems. RESULTS: =.<.05 for all the comparison). CONCLUSIONS: CO-RADS, COVID-RADS, the RSNA statement and the BSTI statement provided reasonable performances and interobserver agreements in reporting CT findings of COVID-19.