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01-10-2007 | Urogenital

MDCT urography: experience with a bi-phasic excretory phase examination protocol

Authors: Thomas Meindl, Eva Coppenrath, Christoph Degenhart, Ulrike L. Müller-Lisse, Maximilian F. Reiser, Ullrich G. Müller-Lisse

Published in: European Radiology | Issue 10/2007

Abstract

The benefit of multidetector computed tomographic urography (MDCTU) for visualising early and late excretory phase (EP) upper urinary tract (UUT) opacification has been studied. UUT opacification was retrospectively evaluated in 45 bi-phasic four-row MDCTU examinations. The UUT was divided into intrarenal collecting system (IRCS), proximal, middle and distal ureter. Two independent readers rated opacification: 1, none; 2, partial; 3, complete. Numbers of segments and percentages of UUTs at each score were calculated for each EP and two EPs combined. Results of a single EP and of combined EPs were compared by Wilcoxon matched-pairs signed-ranks. IRCS and proximal ureter were at least partially opacified in each EP in >95%. The middle ureter was at least partially opacified in the early and late EP in 85% and 93%, respectively. The distal ureter was opacified in 65% (49/75) in the early EP and in 78% (59/75) in the late EP. Combining two EPs, non-opacified distal segments decreased to 9% (7/75). Significant improvement between a single EP and combining two EPs were found for the middle and distal ureter (P < 0.03). Bi-phasic MDCTU substantially improved opacification of the middle and distal ureter. IRCS and proximal ureter are reliably opacified with one EP.

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Title: MDCT urography: experience with a bi-phasic excretory phase examination protocol
Authors: Thomas Meindl
Eva Coppenrath
Christoph Degenhart
Ulrike L. Müller-Lisse
Maximilian F. Reiser
Ullrich G. Müller-Lisse
Publication date: 01-10-2007
Publisher: Springer-Verlag
Published in: European Radiology / Issue 10/2007
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-007-0600-7

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Springer Medicine

MDCT urography: experience with a bi-phasic excretory phase examination protocol

Abstract

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

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