| Slow flow or no flow? Color and power Doppler US pitfalls in the abdomen and pelvis. | |
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MedLine Citation:
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PMID: 15026596 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Color and power Doppler ultrasonography allow rapid assessment of tissue vascularity. Motion sensitivity to phenomena such as flow along the edge of gallstones, urinary jets, and placentation abnormalities can result in artifactual flow patterns that require corroboration with spectral analysis. Similar artifacts have also been noted at the edge of bone and along the bowel wall secondary to bowel motion. These artifacts fall into four categories: (a) twinkle artifacts, which occur behind reflectors; (b) edge artifacts, which occur along strongly reflective interfaces; (c) flash artifacts, which occur due to tissue or fluid motion; and (d) pseudoflow, which occurs due to nonvascular flow of other fluids such as urine or ascites. Knowledge of the most common sites of color and power Doppler artifacts, familiarity with the typical appearances of these artifacts, and liberal use of spectral analysis will help prevent misinterpretation of these findings and may lead to improved diagnostic accuracy. |
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Authors:
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Shannon C Campbell; Jeanne A Cullinan; Deborah J Rubens |
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Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Radiographics : a review publication of the Radiological Society of North America, Inc Volume: 24 ISSN: 1527-1323 ISO Abbreviation: Radiographics Publication Date: 2004 Mar-Apr |
Date Detail:
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Created Date: 2004-03-17 Completed Date: 2004-07-13 Revised Date: 2005-11-16 |
Medline Journal Info:
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Nlm Unique ID: 8302501 Medline TA: Radiographics Country: United States |
Other Details:
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Languages: eng Pagination: 497-506 Citation Subset: IM |
Copyright Information:
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Copyright RSNA, 2004 |
Affiliation:
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Department of Radiology, University of Rochester Medical Center, 601 Elmwood Ave, Box 648, Rochester, NY 14642, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Abdomen
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blood supply*,
ultrasonography Artifacts* Blood Flow Velocity* Hemorheology / instrumentation, methods* Pelvis / blood supply*, ultrasonography Spectrum Analysis Ultrasonography, Doppler, Color* |
| Comments/Corrections | |
Erratum In:
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Radiographics. 2004 May-Jun;24(3):917 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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