3Deveci S,Coskun M,Tekin MI,et al.Spiral computed tomography:role in determination of chemical composition of pure and mixed urianry stones-an in vitro study[J].Urology,2004,64(2):237 -240.
4Mostafavi MR,Emst RD,Saltzman B.Accurated determination of chemical composition of urinary calculi by spiral computerized tomography[J].J Urol,1998,159(3):673-675.
5Saw KC,McAteer JA,Fineberg NS,et al.Calcium stone fragility is predicted by helical CT attenuation values[J].J Endourol,2000,14(6):471 -474.
