EP169 Can we predict urinary stone composition based on non-contrast computed tomography? The issue of non-pure calculi

Predictive Value of Hounsfield Unit, Volumetric Stone Burden in Fragmentation and Specific Composition of Urinary Calculi

“…Non pure calculi were found in majority of their patients and prediction of stone composition using attenuation value was not feasible in-vivo. [17] The CT attenuation value depends on the percentage of various constituents of the calculus, as depicted in Table - …”