| Evaluation of dural arteriovenous fistulas with 4D contrast-enhanced MR angiography at 3T. | |
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MedLine Citation:
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PMID: 19833802 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND AND PURPOSE: Four-dimensional contrast-enhanced MR angiography (4D-CE-MRA) at 3T may replace digital subtraction angiography (DSA) for certain diagnostic purposes in patients with intracranial dural arteriovenous fistula (DAVF). The aim of this study was to test the hypothesis that 4D-CE-MRA at 3T enables the same characterization of intracranial DAVFs as DSA. MATERIALS AND METHODS: The study population consisted of 18 consecutive patients with intracranial DAVFs (11 women, 7 men; age range, 35-82 years; mean age, 64.8 years). They underwent 4D-CE-MRA at 3T and DSA. The 4D-CE-MRA series combined randomly segmented central k-space ordering, keyhole imaging, sensitivity encoding, and half-Fourier imaging. We obtained 30 dynamic scans every 1.9 seconds with a spatial resolution of 1 x 1 x 1.5 mm. Two independent readers reviewed the 4D-CE-MRA images for main arterial feeders, fistula site, and venous drainage. Interobserver and intermodality agreement was assessed by kappa statistics. RESULTS: At DSA, 8 fistulas were located at the transverse sigmoid sinus; 8, at the cavernous sinus; and 2, at the sinus adjacent to the foramen magnum. Interobserver agreement was fair for the main arterial feeders (kappa = 0.59), excellent for the fistula site (kappa = 0.91), and good for venous drainage (kappa = 0.86). Intermodality agreement was moderate for the main arterial feeders (kappa = 0.68) and excellent for the fistula site (kappa = 1.0) and venous drainage (kappa = 1.0). CONCLUSIONS: The agreement between 4D-CE-MRA and DSA findings was good to excellent with respect to the fistula site and venous drainage. |
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Authors:
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S Nishimura; T Hirai; A Sasao; M Kitajima; M Morioka; Y Kai; Y Omori; T Okuda; R Murakami; H Fukuoka; K Awai; J-I Kuratsu; Y Yamashita |
Publication Detail:
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Type: Comparative Study; Journal Article Date: 2009-10-15 |
Journal Detail:
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Title: AJNR. American journal of neuroradiology Volume: 31 ISSN: 1936-959X ISO Abbreviation: AJNR Am J Neuroradiol Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-01-15 Completed Date: 2010-03-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003708 Medline TA: AJNR Am J Neuroradiol Country: United States |
Other Details:
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Languages: eng Pagination: 80-5 Citation Subset: IM |
Affiliation:
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Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Central Nervous System Vascular Malformations / diagnosis* Female Humans Magnetic Resonance Angiography / methods* Male Middle Aged Prospective Studies |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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