| B-flow sonographic evaluation of hemodialysis fistulas: a comparison with low- and high-pulse repetition frequency color and power Doppler sonography. | |
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MedLine Citation:
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PMID: 16239653 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to determine the effectiveness of B-flow sonography in the evaluation of hemodialysis fistulas and to compare this new technique with color and power Doppler sonography. METHODS: In this study, 32 randomly selected patients (mean age, 46 years; age range, 18-87 years) with normally functioning hemodialysis fistulas were evaluated with low- and high-pulse repetition frequency (PRF) color and power Doppler sonography (PRF values of 3 and 10 kHz) and B-flow sonography. All images were reviewed and graded independently by 2 observers for luminal filling with flow signals, visibility of the intimal layer, and overall image quality. The study was approved by the Institutional Review Board, and informed consent was obtained from all patients. RESULTS: Statistical analysis with Friedman and Wilcoxon signed rank tests revealed that B-flow sonography was superior to other techniques for luminal filling and visibility of the intimal layer (P = .000). For overall image quality, B-flow sonography was also the best method according to the Friedman test (P = .000). However, the Wilcoxon test showed no significant difference between B-flow and high-PRF (10-kHz) color and power Doppler sonography (P = .131). The kappa scores reflected moderate to good interobserver agreement (kappa = 0.285-0.784). CONCLUSIONS: B-flow sonography is a relatively new and superior imaging technique that provides direct visualization of the blood echoes and the morphologic characteristics of the surrounding vessel wall simultaneously. During the evaluation of hemodialysis shunts, the major advantage of this technique is its ability to avoid artifacts such as aliasing and overwriting. |
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Authors:
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Cem Yücel; Suna Ozhan Oktar; Yasemin Erten; Aykut Bursali; Hakan Ozdemir |
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Publication Detail:
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Type: Comparative Study; 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: 24 ISSN: 0278-4297 ISO Abbreviation: J Ultrasound Med Publication Date: 2005 Nov |
Date Detail:
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Created Date: 2005-10-21 Completed Date: 2006-04-04 Revised Date: 2006-11-15 |
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: 1503-8; quiz 1509-10 Citation Subset: IM |
Affiliation:
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Department of Radiology, Gazi University School of Medicine, 06510 Besevler, Ankara, Turkey. cyucel@gazi.edu.tr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Blood Vessels / ultrasonography* Female Humans Male Middle Aged Renal Dialysis* Ultrasonography, Doppler* Ultrasonography, Doppler, Color Vascular Surgical Procedures |
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