CT-Urography: Comparison of different methods for increasing the intra-abdominal pressure

Lena Hage, Daniel Boll, Philipp Brantner, Georg Bongartz, Silke Potthast


Objective: Investigating the influence of increasing the intraabdominal pressure by Valsalva maneuvers and/or abdominal compression to reach best visualization of the entire urinary tract in computed tomography urography (CTU).

Methods: After split-bolus technique, Valsalva maneuvers, compression or a combination of both were applied in 60 patients before late phase images were acquired. The degree of opacification and distension of three segments of the urinary tract were evaluated.

Results: After split-bolus CT no significant difference among the groups regarding distention and opacification. A significant increase in distension and opacification was found during Valsalva and the combination of Valsalva and compression.

Conclusions: A CTU protocol including a late phase scan with prior application of compression, Valsalva maneuvers or a combination of both showed beneficial effects for the distension and opacification, a significant difference was found by taking location as a covariate.

Full Text:


DOI: https://doi.org/10.5430/ijdi.v5n1p25


  • There are currently no refbacks.

International Journal of Diagnostic Imaging

ISSN 2331-5857 (Print)  ISSN 2331-5865 (Online)

Copyright © Sciedu Press

To make sure that you can receive messages from us, please add the 'sciedu.ca' and ‘sciedupress.com’ domains to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', please check your 'spam' or 'junk' folder.