الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
We tried in this study to know if there was a correlation between in vivo urinary stone radio-opacity by plain abdominal radiograph (KUB) and radiodensity by multidetector CT with the composition of these stones determined by x-ray powder diffraction as a method for stone analysis.
The study included one hundred stone samples which were either surgically extracted (endoscopic or by open surgery) or passed spontaneously with urine. The stones were studied by plain abdominal radiograph (KUB) and multidetector CT, then analyzed by x-ray powder diffraction technique.
The results showed that most of the stones included in the study were of mixed component (97%) and only three pure stones were found. The pure stones were calcium oxalate monohydrate (two stones) and cystine (single stone). There was no brushite stones.