| Quantification of vascular stenosis with color Doppler flow imaging: in vitro investigations. | |
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MedLine Citation:
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PMID: 1994406 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The accuracy of quantifying the degree of vascular stenosis with color Doppler flow imaging (7.5-MHz, linear array system) was determined in an experimental study carried out on six concentric and five eccentric model stenoses (cross-sectional area reduction, 13.4%-93.8%). The measurements were made with use of pulsatile flow at four different flow rates (70.8-339.0 mL/min). The degree of stenosis was calculated from the ratio of prestenotic to intrastenotic flow velocity. The most exact measurement of the degree of stenosis could be achieved with Doppler spectral analysis by determining the maximum peak systolic velocity (r = .994, y = 0.98x - 3.2). With the velocity values derived only from the color-coded image, it was also possible to find the most exact degree of stenosis (r = .995, y = 0.99x - 2.9). For quantification of stenosis, pre- and intrastenotic Doppler spectral analysis is no longer necessary if the stenosis can be imaged sufficiently with color Doppler. |
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Authors:
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P Landwehr; R Schindler; U Heinrich; W Dölken; T Krahe; K Lackner |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Radiology Volume: 178 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1991 Mar |
Date Detail:
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Created Date: 1991-03-21 Completed Date: 1991-03-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0401260 Medline TA: Radiology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 701-4 Citation Subset: AIM; IM |
Affiliation:
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Institut für Röntgendiagnostik, University of Würzburg, Federal Republic of Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity Constriction, Pathologic / ultrasonography Humans Models, Cardiovascular Models, Structural Pulsatile Flow Ultrasonics Ultrasonography / methods* Vascular Diseases / ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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