Renal cell carcinoma attenuation values on unenhanced CT: importance of multiple, small region-of-interest measurements

摘要

Objective: Since it has been suggested that benign renal cysts can be diagnosed at unenhanced CT on the basis of homogeneity and attenuations of 20 HU or less, we determined the prevalence of renal cell carcinomas (RCCs) with these characteristics using two different methods of measuring attenuation.