الفهرس 
Anatomy of urinary system
Image Reconstruction and Post processing:Only 14 pages are availabe for public view
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Abstract
The urinary tract stone disease is a common problem, it represents
10%-14%,among different chemical compounds that can form renal stones,the most common type of renal stones was calcium oxide then cystine, then uric acid, dual energy CT with advanced post processing techniques gives anatomical information as size, site of the stones as well as its chemical composition which alter the clinical management. This study aimed at studying the role of Dual energy Computed tomography in characterization of renal stones. This study was carried out at the Diagnostic Radiology Department at Tanta University Hospital throughout the period from October 2015 to February 2017 included 40 patients with renal stones, in this study renal
stones were more common in female(55%) than males(45%).The age of our selected patients ranged from 24 to 65 years with a mean of 33 years. The most affected age group was from 30 to less than 40 years (16 cases)represent 40% of the cases.In the present study, in order to minimize radiation exposure, the patients were scanned first with a standard low-dose renal stone CT, using a tube potential of 120 kVp and very low tube current 150-200 mAs, after
assurance of the presence of renal stones by non contrast study, Dual energy CT examinations were performed by using a single-source dual energy and
single raw detectors with fast switching using 80 kVp and 140 kVp, DECT
was performed focusing on the region of the stone only.