Multi-detector CT urography: effect of oral hydration and contrast medium volume on renal parenchymal enhancement and urinary tract opacification—a quantitative and qualitative analysis

Szolar, Dieter; Tillich, Manfred; Preidler, Klaus W.

doi:10.1007/s00330-010-1785-8

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…[22] Oral hydration decreases the attenuation values in the urinary tract at the excretory phase, but improves the continuous opacification of the ureter. [23] Limitations There were limitations to our study. Patients were placed consecutively into the groups.…”

Section: Discussionmentioning

confidence: 99%

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

Hage

Boll²,

Brantner³

et al. 2018

IJDI

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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.

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Section: Discussionmentioning

confidence: 99%

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

Hage

Boll²,

Brantner³

et al. 2018

IJDI

View full text Add to dashboard Cite

show abstract

“…Although peroral hydration [13] and IV furosemide [9,14] are more definitively associated with improved urinary tract opacification than IV saline administration [10,15,16], we choose to use all three methods because they are all safe, low cost, and conveniently administered. Although the 7-minute delay used for urographic phase acquisition was determined largely on the basis of institutional experience and workflow efficiency, Kemper et al [17] experimentally validated precisely 7 minutes as the median urographic phase delay required for maximal distal ureteral opacification.…”

Section: Patel Et Almentioning

confidence: 99%

“…In terms of peroral hydration, Szolar et al [13] reported urinary tract opacification in patients undergoing CT urography supplemented with peroral hydration (at varying doses of IV contrast agent), using a scoring system slightly modified compared with ours. For instance, in their study, a score of 3 equaled 76-100% opacified segment.…”

Section: Patel Et Almentioning

confidence: 99%