| Laminar submerged jets by color Doppler ultrasound. A model of the ureteral jet phenomenon. | |
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MedLine Citation:
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PMID: 1473923 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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RATIONALE AND OBJECTIVES: The authors developed and tested a technique to noninvasively measure ureterovesical junction (UVJ) pressure gradients. Such a technique could be used to evaluate ureteral reflux and obstruction. METHODS: Color Doppler ultrasound measurements of an in vitro model of the ureteral jet were performed. RESULTS: The authors show that the orificial rate of momentum transfer of the ureteral jet (from which the intraluminal pressure in the ureter can be calculated) can be determined to within 45% to 94% of its true value depending primarily on the flow sensitivity of the color flow imager. Marked improvement in the momentum calculation (> 80%) is achieved when a low-flow sensitivity is used. CONCLUSION: Such noninvasive measurements could replace more invasive techniques (eg, the Whitaker test or cystoscopy with or without ureteral cannulation), which seriously perturb the system of interest. |
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Authors:
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R M Summers; R S Adler; J B Fowlkes; J M Rubin |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Investigative radiology Volume: 27 ISSN: 0020-9996 ISO Abbreviation: Invest Radiol Publication Date: 1992 Dec |
Date Detail:
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Created Date: 1993-01-29 Completed Date: 1993-01-29 Revised Date: 2010-03-24 |
Medline Journal Info:
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Nlm Unique ID: 0045377 Medline TA: Invest Radiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1044-51 Citation Subset: IM |
Affiliation:
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Department of Diagnostic Radiology, University of Michigan Hospitals, Ann Arbor 48109-0030. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Humans Models, Biological Ureter / physiology*, ultrasonography* Urodynamics* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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