Correlations of renal parenchymal attenuations and CT severity scores on three consecutive CTs in COVID-19 patients

Abstract

Aim: We aimed to investigate the correlation between the temporal changes of computed tomography severity score (CT-SS) ​​and mean renal parenchymal attenuation (MRPA) values in consecutive chest computed topographies (CT). Material and Method: This retrospective, single-center study included 65 (≥18 years) COVID-19 patients with positive RT-PCR tests. A radiologist calculated three consecutive chest CT-SSs and measured the MPRAs on CTs from the upper half of each kidney included in the cross-section. Paired samples test and Wilcoxon signed-rank test were used to evaluate the temporal changes of mean renal parenchymal attenuation (RPA) and median CT-SS values, in three consecutive CTs. Spearman's test was used to evaluate the correlation of each RPA and CT-SS value on three consecutive CTs. Results: The study population included 65 patients with a mean age of 61.49±13.91 years. A total of 36/65 (55.4%) were male. We found a significant increase between the first and second CT-SS (p