Role of Non Enhanced Multi-Slice CT Urinary Tract in Evaluation of Urinary Calculi in Pre & Post Extracorporeal Shock Wave Lithotripsy (ESWL),
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Role of Non Enhanced Multi-Slice CT Urinary Tract in Evaluation of Urinary Calculi in Pre & Post Extracorporeal Shock Wave Lithotripsy (ESWL), HESHAM F. MOHAMED, HAMOUDA W. SHERIF, HAMADA M. KHATER and MOHAMED A. ELNEFILY
Abstract
Aim of the Work: To evaluate the role of non-enhancing CT using stone size, attenuation value and skin to stone distance (SSD) as predictive factors for successful Extracor-poreal Shock Wave Lithotripsy (ESWL) for urinary calculi to avoid the coast of un-useful ESWL.
Patient and Methods: The study included 120 patients (80 males and 40 female) with urinary calculi (kidney stones !92.5cm, upper and middle third ureter stones £1.5cm). Stone size, attenuation value and SSD are measured by NCCT. statistical comparison between the different groups, the sig-nificance of difference was tested using Student's t-test and chi-square test.
Results: ESWL was successful in 107 patients (89.2%). Failure of disintegration was observed in 13 patients (10.2%). ESWL treatment was successful in 47 patients in 1st session, 44 patients in 2nd session and 16 patients in 3rd session.
Conclusion: Kidney stones >!2cm, ureteric stone >!1.5cm and increased stone density more than 1000 HU measured by NCCT are significant predictors of failure after treatment by ESWL.