| Volumetric blood flow measurement with color Doppler ultrasonography: the importance of visual clues. | |
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MedLine Citation:
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PMID: 8492373 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Volumetric flow rates were obtained in an in vivo canine pulsatile flow model using color Doppler ultrasonography (CDUS) and timed collection (TC) over a range which included laminar and turbulent flow. CDUS demonstrated increasing flow disturbance as flow rates increased, with effects on velocity profile, diameter measurements, and flow symmetry. Data comparing CDUS and TC showed marked differences in laminar flow (regression: slope = 1.02; r2 = 0.93; mean error, 11%) and nonlaminar flow (slope = 0.53; r2 = 0.78; mean error, 26%). Assigning the angle of insonation precisely was crucial to measurement accuracy. CDUS quantitates volumetric blood flow with a reasonable degree of accuracy under laminar flow conditions. Visual clues provided by CDUS can help avoid errors associated with deviations from laminar flow. |
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Authors:
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M F Fillinger; R A Schwartz |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine Volume: 12 ISSN: 0278-4297 ISO Abbreviation: J Ultrasound Med Publication Date: 1993 Mar |
Date Detail:
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Created Date: 1993-06-11 Completed Date: 1993-06-11 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 8211547 Medline TA: J Ultrasound Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 123-30 Citation Subset: IM |
Affiliation:
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Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 03756. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Arteries / ultrasonography Blood Flow Velocity* Dogs Pulsatile Flow* Sensitivity and Specificity Ultrasonography / methods* Veins / ultrasonography |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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