2078 IS TOTAL ABDOMINAL EXPOSURE DURING NON-CONTRAST COMUTERIZED TOMOGRAPHY (NCCT) NECESSARY AS FOLLOW -UP(F-U) OF PATIENTS WITH URETERAL STONES?!

Abstract

You have accessJournal of UrologyStone Disease: Basic Research (I)1 Apr 20132078 IS TOTAL ABDOMINAL EXPOSURE DURING NON-CONTRAST COMUTERIZED TOMOGRAPHY (NCCT) NECESSARY AS FOLLOW -UP(F-U) OF PATIENTS WITH URETERAL STONES?! Avi Stein, Yuval Freifeld, ofir Avitan, Roni Molnar, Yoel Mecz, Dmitri Goldin, Tal May, Ilan Klein, Hashul Sharbal, Moad Yichie, Mati Shnap, Nathan Peled, and Yoram Dekel Avi SteinAvi Stein Haifa, Israel More articles by this author , Yuval FreifeldYuval Freifeld Haifa, Israel More articles by this author , ofir Avitanofir Avitan Haifa, Israel More articles by this author , Roni MolnarRoni Molnar Haifa, Israel More articles by this author , Yoel MeczYoel Mecz Haifa, Israel More articles by this author , Dmitri GoldinDmitri Goldin Haifa, Israel More articles by this author , Tal MayTal May Haifa, Israel More articles by this author , Ilan KleinIlan Klein Haifa, Israel More articles by this author , Hashul SharbalHashul Sharbal Haifa, Israel More articles by this author , Moad YichieMoad Yichie Haifa, Israel More articles by this author , Mati ShnapMati Shnap Haifa, Israel More articles by this author , Nathan PeledNathan Peled Haifa, Israel More articles by this author , and Yoram DekelYoram Dekel Haifa, Israel More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2013.02.2497AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Ureteral calculi are a common and recurrent clinical emergency in younger patients. The calculi are frequently progressing downstream and some get expelled spontaneously. Repeated NCCT involving radiation exposures are therefore often needed in the course of the same and in recurrent episodes. The issue of X-ray potential accumulated risk has been widely described. We conducted a prospective study in which a batch was formed from the f-u NCCT including only “slices” distal to the original ureteral stone location. The aim of the study was to evaluate the rate of potentially missed findings in this batch compared to the full NCCT and to calculate the radiation exposure which could be saved by using the limited field batch compared to the full study. METHODS 40 patients with single stones in ureters were included. Stone size and locations were described. Patients who had retrograde manipulations were excluded. The full CT and batches were separately interpreted. CTDI was then calculated and translated to msv for all batches and full studies and Rx exposure was then compared calculating the Rx dose which could have been saved if only batches are used for F-U NCCT studies. RESULTS 15/40 patients had stones located at the proximal ureter and 25 in the distal part. The average msv (graph) was 12 for the complete CT and 3.1 for the batches (in average 73% less Rx exposure More radiation was obviously saved in distal stones, which present more frequently . No other pathology was missed by the limited field batch compared to the full F-U NCCT, given that a complete NCCT is performed at presentation. Presence of hydronephrosis can be easily detected by ultrasound. CONCLUSIONS Many patients are referred to repeated FU NCCT. We present a method of limited field NCCT. This, eventually combined with dose reduction protocols, may suggest a significant saving in Rx exposure for patients with ureteral calculi. © 2013 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 189Issue 4SApril 2013Page: e852-e853 Advertisement Copyright & Permissions© 2013 by American Urological Association Education and Research, Inc.MetricsAuthor Information Avi Stein Haifa, Israel More articles by this author Yuval Freifeld Haifa, Israel More articles by this author ofir Avitan Haifa, Israel More articles by this author Roni Molnar Haifa, Israel More articles by this author Yoel Mecz Haifa, Israel More articles by this author Dmitri Goldin Haifa, Israel More articles by this author Tal May Haifa, Israel More articles by this author Ilan Klein Haifa, Israel More articles by this author Hashul Sharbal Haifa, Israel More articles by this author Moad Yichie Haifa, Israel More articles by this author Mati Shnap Haifa, Israel More articles by this author Nathan Peled Haifa, Israel More articles by this author Yoram Dekel Haifa, Israel More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...