| Prospective comparison of MR phase-contrast velocimetry with intravascular doppler US during infrainguinal artery angioplasty. | |
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MedLine Citation:
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PMID: 11287533 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To evaluate the accuracy of magnetic resonance (MR) velocimetry for quantitative assessment of stenosis in patients undergoing percutaneous transluminal angioplasty (PTA). MATERIALS AND METHODS: Thirty patients underwent PTA of the infrainguinal region. To assess hemodynamic parameters of lesions, MR phase-contrast velocimetry with a circular-polarized extremity receiver coil and a cardiac gated gradient echo sequence was conducted before and 1 day after PTA. Additionally, all lesions were examined by means of intravascular Doppler flow measurements (0.018-inch wire, 12 MHz). From these data, the degree of stenosis was calculated and a comparison of MR velocimetry with intravascular Doppler US was undertaken. RESULTS: Correlation between calculated grade of stenosis for MR velocimetry and intravascular Doppler US was good and significant (r = 0.74; P <.001). Calculated luminal stenosis grade were similar for both methods before PTA (intravascular Doppler US: 0.62 +/- 0.18, MR velocimetry: 0.54 +/- 0.19; P =.17 with paired Student t-test) and after PTA (0.25 +/- 0.23 and 0.3 +/- 0.2, respectively; P =.56). CONCLUSION: MR velocimetry results in reliable noninvasive in vivo flow measurements and allows accurate assessment of stenosis in a clinical setting. |
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Authors:
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H Alfke; J T Heverhagen; D Bandorski; M Hoppe; H J Wagner |
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Publication Detail:
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Type: Clinical Trial; Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of vascular and interventional radiology : JVIR Volume: 12 ISSN: 1051-0443 ISO Abbreviation: J Vasc Interv Radiol Publication Date: 2001 Apr |
Date Detail:
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Created Date: 2001-04-05 Completed Date: 2001-08-02 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9203369 Medline TA: J Vasc Interv Radiol Country: United States |
Other Details:
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Languages: eng Pagination: 459-63 Citation Subset: IM |
Affiliation:
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Department of Radiology, University Hospital, Philipps University, Baldingerstrasse, 35043 Marburg, Germany. alfke@mailer.uni-marburg.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Angiography Angioplasty* Arteriosclerosis / therapy*, ultrasonography* Blood Flow Velocity Female Humans Inguinal Canal / blood supply* Magnetic Resonance Imaging* Male Prospective Studies Rheology Treatment Outcome Ultrasonography, Doppler* Ultrasonography, Interventional* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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