The role of 4D MRA with keyhole and view-sharing at 3.0T in the diagnostic work-up of cerebral arteriovenous malformations: a prospective intra-individual study
نویسندگان
چکیده
Introduction Time resolved MRA is a promising technique in the diagnostic assessment of many supraaortic vascular pathologies including the diagnosis and follow-up of cAVM; however, due to its limited spatial and temporal resolution as compared to DSA, it suffers from shortcomings in the detailed characterization of cAVM, especially with respect to hemodynamic considerations (1). Previous studies allowed for temporally accelerated imaging at preserved high spatial resolution by a combination of keyhole (2,3), CENTRA (4), parallel imaging (5), partial Fourier, and alternating view-sharing (6). The current study was carried out to compare high temporal resolution 4D MRA in the entire diagnostic work-up of cAVM including preand post-operative assessment.
منابع مشابه
4D time-resolved MR angiography with keyhole (4D-TRAK): more than 60 times accelerated MRA using a combination of CENTRA, keyhole, and SENSE at 3.0T.
PURPOSE To present a new 4D method that is designed to provide high spatial resolution MR angiograms at subsecond temporal resolution by combining different techniques of view sharing with parallel imaging at 3.0T. MATERIALS AND METHODS In the keyhole-based method, a central elliptical cylinder in k-space is repeated n times (keyhole) with a random acquisition (CENTRA), and followed by the re...
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BACKGROUND Traditional digital subtraction angiography (DSA) is currently the gold standard diagnostic method for the diagnosis and evaluation of cerebral arteriovenous malformation (AVM) and dural arteriovenous fistulas (dAVF). OBJECTIVES The aim of this study was to analyze different less invasive magnetic resonance angiography (MRA) images, time-resolved MRA (TR-MRA) and three-dimensional ...
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