In Vivo Evaluation of The Chemical Composition of Urinary Stones Using Non-Contrast Helical Computerized Tomography

Authors : Osman Raif KARABACAK, Fatih SANDIKÇI, Hakan SALTAŞ, Alper DİLLİ, Kürşad ZENGİN, Fatih YALÇINKAYA, Ümit Yaşar AYAZ

Pages : 38-45

Doi:10.54233/endouroloji.20231502-1224856

View : 63 | Download : 44

Publication Date : 2023-05-31

Article Type : Research Paper

Abstract :Objective: To determine the density and chemical structure of renal stones by using in vivo low dose helical computerized tomography insert ignore into journalissuearticles values(CT);. Material and Methods: 79 patients with urinary stones such as renal or uretheral stones were included in our study who were going to have extracorporeal shock wave lithotripsy insert ignore into journalissuearticles values(ESWL); or planned to go through urinary stone surgery due to renal stones. All stone densities were measured in Hounsfield Unit by low dose abdominal non-contrast helical computed tomography examination. Marconi MX 8000 CT system with 4 detectors was used for the CT examination. X-Ray diffractometry was used in the analyses of all stones. Results: The stone type was found to be pure type in 52 patients, and mixed stone in 27 patients. The largest group among the mixed stones included whewellite stone with 17 patients. Uric acid stones had the smallest, whewellite stones had the highest density. The difference between the density values of uric acid and cystine stones and the other stone types were statistically significant. Conclusion: Non-contrast helical computed tomography used in the diagnosis can also be used in the in vivo determination of the stone composition. It can be very helpful to define stone compositions by imaging studies to provide suitable therapeutic alternatives.
Keywords : Stone, density, tomography, dual, hounsfield unit

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