The aim of the study was to compare the inter-observer variability and the accuracy of magnetic resonance urography (MRU) using a thin sectional balanced-turbo field echo (B-TFE) sequence for detecting ureteral calculi and to determine the effect of additional factors (size, density and location of the calculus) on the sensitivity and specificity of the MRU.MRU and CT images were evaluated independently by two radiologists according to presence, density and localization of calculi. The degrees of inter-rater agreement for categorical items were evaluated by the Kappa coefficient.According to the 1st and 2nd observers, the sensitivity of MRU was 65.9 

作者：Egemen, ?if?i；G?k?en, ?oban；Tufan, ?i?ek；Umut, G?nülalan

来源：European radiology 2016 年 26卷 12期