| Diagnostic pitfalls in postinterventional intraarterial magnetic resonance angiography after recanalization of femoropopliteal arterial occlusions. | |
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MedLine Citation:
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PMID: 19031180 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Magnetic resonance (MR)-guided vascular interventions are of increasing interest, and, with the use of contrast-enhanced techniques, intraarterial contrast-enhanced MR angiography (ia-ce-MRA) competes with intraarterial digital subtraction angiography (ia-DSA) for the diagnostic evaluation of the infrainguinal vessel tree. PURPOSE: To assess the diagnostic value of ia-ce-MRA and high-resolution T1-weighted (hr-T1w) imaging compared to the gold-standard ia-DSA for residual stenosis and local dissections after femoropopliteal recanalization in patients with peripheral arterial occlusive disease (PAOD). MATERIAL AND METHODS: Eight patients with PAOD and short vessel occlusion of their femoropopliteal arteries underwent recanalization and balloon positioning under DSA. Patients were transferred to a short-bore MR scanner. Percutaneous transluminal angioplasty (PTA) was accomplished under MR fluoroscopy. Pre- and postinterventional ia-ce three-dimensional (3D) gradient-echo MRA with gadopentate dimeglumine was performed using the intraarterial introducer sheath. Maximum intensity projections (MIP) and multiplanar reconstructions (MPR) were calculated from the data set. High-resolution T1w images of the angioplasty region before and after dilatation were acquired. Control ia-DSA images were obtained. RESULTS: The postinterventional angioplasty results for stenosis grading were comparable in ia-MRA and ia-DSA. Only two of five local dissections in ia-DSA were visualized with the ia-ce-MRA runs including MIPs and MPRs. To clearly depict dissection, hr-T1w images were needed. CONCLUSION: Grading of stenotic lesions with ia-ce-MRA after PTA is comparable to ia-DSA. Intraarterial ce-MRA with calculated MIPs and MPRs is only partially sufficient to visualize local dissections after PTA. High-resolution T1w images are required for precise diagnosis of dissections in magnetic resonance tomography. |
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Authors:
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R W Huegli; M Aschwanden; S Kos; M Rasmus; K Jaeger; A L Jacob; D Bilecen |
Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Acta radiologica (Stockholm, Sweden : 1987) Volume: 49 ISSN: 1600-0455 ISO Abbreviation: Acta Radiol Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2008-11-25 Completed Date: 2008-12-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8706123 Medline TA: Acta Radiol Country: Sweden |
Other Details:
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Languages: eng Pagination: 1129-36 Citation Subset: IM |
Affiliation:
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Department of Radiology, University Hospital of Basel, Basel, Switzerland. rhuegli@uhbs.ch |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Angiography, Digital Subtraction / methods Angioplasty, Balloon / adverse effects, methods* Arterial Occlusive Diseases / diagnosis*, therapy Constriction, Pathologic / diagnosis, etiology, therapy Contrast Media / diagnostic use Diagnosis, Differential Female Femoral Artery / pathology* Follow-Up Studies Gadolinium DTPA / diagnostic use Humans Image Enhancement / methods Image Processing, Computer-Assisted / methods Magnetic Resonance Angiography / methods* Male Middle Aged Observer Variation Peripheral Vascular Diseases / diagnosis*, etiology, therapy Popliteal Artery / pathology* Predictive Value of Tests Prospective Studies Reproducibility of Results Severity of Illness Index Treatment Outcome |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 80529-93-7/Gadolinium DTPA |
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