A STUDY OF URINARY TRACT ABNORMALITIES: ROLE OF LOW DOSE MDCT UROGRAPHY

Introduction: Computed Tomography (CT) urography is more accurate in detection of renal masses, urinary tract tumors, inflammatory lesion, calculi and other causes obstruction compared with intravenous urography. The standard single bolus MDCT Urography protocol comprises three to four phases, consists non-contrast, corticomedullary, nephrographic excretory phases. A major disadvantage a high radiation dose, which 8-10 times higher than an IVP examination. In comparison, split-bolus, dual-phase technique scans the system non-contrast combined nephrographic-excretory This study aimed compare total CT dose patient image quality MDCTU low protocol. Methodology: this hospital based prospective 100 patients (50 tests 50 controls) were for subjective assessment between [non contrast scan at 120kvp , followed by enhanced corticomedullary phase phase] (non (at 80 kvp), synchronus acquisition using split administration technique) . Result: unenhanced phase, received mean net effective 18.83 mSv protocol, 9.06 significant 52% reduction (P value <0.001). Standard optimal resolution 82% patients, moderately grainy/poor 14% significantly grainy/very poor 4% patients. 64% mild 22% no difference both value>0.05). images (22%) reviewed together normal good qualitysynchronus diagnosis almost same spectrum pathology like Conclusion: approx 50% possible line ALARA principle (As as reasonably achievable), facilitating urological pathologies.