| MRI after implantation of a novel femoral closure device following intra-arterial catheterisation: implications for subsequent contrast-enhanced MR angiography. | |
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MedLine Citation:
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PMID: 19936755 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To assess MRI safety aspects and artefacts of a novel femoral artery closure device during contrast-enhanced MR angiography in patients following intra-arterial catheterisation. METHODS: Ten consecutive patients underwent MRI within 24 h of coronary angiography and placement of a femoral artery closure device. We used a T2-weighted gradient-echo MRI sequence to measure the device-related artefact size in comparison with a phantom image, phase-contrast flow measurement proximal to, at the level of and distal to the device to quantify potential differences in flow velocity and contrast-enhanced 3D gradient-echo MR angiography to differentiate potential femoral artery stenosis from device-related artefacts. RESULTS: The mean size of the oval-shaped artefact was 8.4 x 6.6 mm (+/-1.0 x 0.8 mm) and was almost identical to the maximum artefact size of the phantom measurement (8.3 x 5.7 mm). Device placement did not result in an increased peak velocity (proximal 69 +/- 23 cm/s, at the level of 64 +/- 11 cm/s and distal to the device 63 +/- 12 cm/s, p = 0.67). The mean artefact penetration into the vessel lumen was 0.5 +/- 0.5 mm (percentage vessel narrowing 7.0 +/- 6%; range 0-16%). CONCLUSION: The MR conditional StarClose femoral artery closure device was used safely within 24 h of deployment at 1.5 T. Despite clip-related artefacts MR angiography will allow for easy differentiation of clip-related artefacts from high-grade atherosclerotic stenosis. |
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Authors:
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Oliver K Mohrs; Steffen E Petersen; Bernd Nowak; Hans-Ulrich Kauczor; Thomas Voigtlaender |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-11-21 |
Journal Detail:
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Title: European radiology Volume: 20 ISSN: 1432-1084 ISO Abbreviation: Eur Radiol Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-04-07 Completed Date: 2010-07-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9114774 Medline TA: Eur Radiol Country: Germany |
Other Details:
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Languages: eng Pagination: 1277-83 Citation Subset: IM |
Affiliation:
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Department of Diagnostic and Interventional Radiology, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany. mohrs@radiologie-darmstadt.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Artifacts Blood Flow Velocity Contrast Media Coronary Angiography Coronary Disease / diagnosis Electrocardiography Female Femoral Artery / surgery* Gadolinium DTPA / diagnostic use Hemostasis, Surgical / instrumentation* Humans Image Processing, Computer-Assisted Linear Models Magnetic Resonance Angiography / instrumentation, methods* Male Middle Aged Phantoms, Imaging Vascular Patency |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 80529-93-7/Gadolinium DTPA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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