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Quantification of Urinary Stone Volume: Attenuation Threshold-based CT Method-A Technical Note


Demehri S. , Kalra M.K. , Rybicki F.J. , Steigner M.L. , Lang M.J. , Houseman E.A. , Curhan G.C. , Silverman S.G. . Radiology. 2011 ; 258(3). 915-922


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A method that uses a variable stone attenuation (equal to half of the attenuation of each stone) yielded more accurate and precise volume measurements than a method with a fixed attenuation threshold.