Özet:

Objective: We aimed to investigate the effect on success of stone-skin distance in CT Computed Tomography and HU Hounsfield units for ESWL performed renal pelvis stones. Material and Methods: Between the dates of January 1, 2011 and December 31, 2012, we retrospectively evaluated 49 patients for ESWL performed renal pelvis stones that diameter are changing between 10mm to 15mm. Before ESWL treatment, non-contrast abdominal CT was taken, stone - skin distance, and Hounsfield units of stones were measured. Patients were evaluated after 3 sessions of ESWL. Stone-free rates after ESWL were evaluated in patients with radiographs.Results: 49 patients, average age 45.2 ± 15.7, included in the study, the average BMI was 25.7 ± 3.5kg/m2. The average stone size, stone-skin distance and stone density HU were measured respectively 117.5 ± 58.4 mm2, 10.5 ± 1.4cm and, 878.8 ± 370.4. The average stone density was found to be a strong predictor value for stone treatment and higher stone density were found in the patients with residual stones p

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