| Doppler color flow in echocardiography: analytical and in-vitro investigations of the quantitative relationship between orifice flow and color jet dimensions. | |
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MedLine Citation:
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PMID: 2238262 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The goal of this investigation was to explore the relationship between orifice flow rate and the dimensions of the resulting color jet. Equations were derived which describe flow rate as a function of the color jet dimensions, instrument characteristics, and a coefficient which represents the unknown velocity profile across the jet. Experiments in which fluid was injected at a variety of flow rates via an assortment of orifice sizes into a compliant, axisymmetric chamber were performed for comparison with the analytical results. During each injection, orifice flow rate and color jet dimensions were recorded. The experimental results were closely predicted (r = 0.97) by an equation which expresses flow rate as a function of the ratio of the color jet area and color jet length, and with a coefficient which approximates that of a parabolic velocity profile. |
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Authors:
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J Holen; M Nanna; J Lockhart; R Waag |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Ultrasound in medicine & biology Volume: 16 ISSN: 0301-5629 ISO Abbreviation: Ultrasound Med Biol Publication Date: 1990 |
Date Detail:
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Created Date: 1990-12-20 Completed Date: 1990-12-20 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 0410553 Medline TA: Ultrasound Med Biol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 543-51 Citation Subset: IM |
Affiliation:
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Department of Radiology, University of Rochester School of Medicine and Dentistry, NY 14642. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity Echocardiography, Doppler* Mathematics Models, Cardiovascular* Models, Structural* Rheology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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