Multislice CT urography (MSCTU): evaluation of a modified scan protocol for optimized opacification of the collecting system

RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
J KemperC Nolte-Ernsting

Abstract

To retrospectively quantify opacification of the urinary tract using a MSCTU protocol based on furosemide and individual adaptation of urographic acquisition delay. MSCTU examinations obtained from 4-row and 16-row CT scanners in 53 patients (35 men, 18 women, average age 59) were independently reviewed by two radiologists. MSCTUs were performed using a low-dose injection of furosemide. No fixed scan delay for urographic image acquisition was applied. The urographic timing was individually adapted by performing low-dose test images of the distal ureters to display their current opacification. Image analysis included grading of the opacification of the segmented collecting system. The average urographic delay was calculated. Stratified comparisons of mean scores were assessed using the Friedman and Wilcoxon tests. The inter-observer kappa value was calculated. The calculated median scan delay for patients with normal serum-creatinine levels (n = 51) was 418 sec (mean 447 sec; SD, 118 sec). The median number of acquired test images was 2 (range 1 - 6 images). The opacification analysis demonstrated that 98 % of the ICS, 90 % of the proximal, 86 % of the middle, and 83 % of the distal ureteral segments showed opacification greater...Continue Reading

Citations

Sep 6, 2006·European Radiology·Claus Nolte-Ernsting, Nigel Cowan
Apr 13, 2007·European Radiology·Joern KemperClaus Nolte-Ernsting
Apr 13, 2007·European Radiology·Thomas MeindlUllrich G Müller-Lisse
Jan 13, 2011·La Radiologia medica·P MartinganoM A Cova
Nov 2, 2007·European Radiology·Aart J Van Der MolenUNKNOWN CT Urography Working Group of the European Society of Urogenital Radiology (ESUR)
May 23, 2014·AJR. American Journal of Roentgenology·Matthew T Heller, Mitchell E Tublin
Jul 25, 2007·European Journal of Radiology·Catherine RoyChristian Saussine
Feb 28, 2008·Journal of Computer Assisted Tomography·Ania Z KielarYong Zhang
Dec 5, 2006·Current Opinion in Urology·Sameh K Morcos

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