| Prospective evaluation of magnetic resonance imaging after endovascular treatment of infrarenal aortic aneurysms. | |
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MedLine Citation:
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PMID: 11461106 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: to evaluate the sensitivity and specificity of magnetic resonance imaging (MRI) in the detection of type II endoleaks during follow-up after endovascular treatment of intra-renal aortic aneurysms. DESIGN: prospective study. MATERIAL AND METHODS: between March 1996 and November 1999, 31 patients with infra-renal aortic aneurysms who underwent stentgraft implantation were followed with helical CT and MRI, including magnetic resonance angiography (MRA), at 1 and 6 months after the procedure. Arteriography was performed between 6 and 12 months after intervention. The parameters studied included the change in the maximum anteroposterior and transverse diameters, the nature of the signal on T1 and T2 weighted sequences (homogeneous vs heterogeneous), the presence or absence of Gadolinium uptake on MRI or of contrast uptake on helical CT (early and late phases) in the sac of the aneurysm. On MRA, stentgraft patency and endoleak detection were studied. RESULTS: arteriography demonstrated an endoleak in 19 patients (18 type II, and 1 type I endoleak). MRI at 6 months detected 18/19 endoleaks on T1 weighted sequences after injection of Gadoliniumj; there were 2 false positives. MRA sequences confirmed stentgraft patency in all patients, but did not diagnose type II endoleaks. Helical CT (late phase) at 6 months detected 10/19 endoleaks; there was 1 false positive. The sensitivity of MRI after injection of Gadolinium and of helical CT for the detection of type II endoleaks were 94% and 50% (p=0.003) respectively. The mean maximal anteroposterior and transverse diameters were similar on MRI and on helical CT at 1 month and at 6 months. CONCLUSION: MRI after injection of Gadolinium is more sensitive than helical CT in the detection of type II endoleaks after stentgraft implantation. Its more widespread use may permit earlier intervention in such patients. |
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Authors:
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S Haulon; C Lions; E P McFadden; M Koussa; V Gaxotte; P Halna; J P Beregi |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery Volume: 22 ISSN: 1078-5884 ISO Abbreviation: Eur J Vasc Endovasc Surg Publication Date: 2001 Jul |
Date Detail:
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Created Date: 2001-07-19 Completed Date: 2001-08-09 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9512728 Medline TA: Eur J Vasc Endovasc Surg Country: England |
Other Details:
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Languages: eng Pagination: 62-9 Citation Subset: IM |
Copyright Information:
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Copyright 2001 Harcourt Publishers Limited. |
Affiliation:
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Department of Vascular Surgery, Hôpital Cardiologique, CHRU, Lille, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aortic Aneurysm, Abdominal / surgery* Blood Vessel Prosthesis Implantation / adverse effects* Female Humans Magnetic Resonance Angiography Magnetic Resonance Imaging* Male Middle Aged Prospective Studies Sensitivity and Specificity Stents Tomography, X-Ray Computed |
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