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Abstract #0625

Non-Contrast-Enhanced High-Temporal-Resolution 4D MRA with an Acquisition Window Covering Two Cardiac Cycles: Assessment of Arteriovenous Malformations in the Brain

Hlne Raoult1, 2, Elise Bannier2, Benjamin Robert3, Peter Schmitt4, Jean-Yves Gauvrit1, 2

1Neuroradiology, University Hospital, Rennes, France; 2Unit VISAGES U746 INSERM-INRIA, IRISA UMR CNRS 6074, University of Rennes, Rennes, France; 3Siemens S.A.S., Saint Denis, France, Metropolitan; 4Siemens AG, MR Application & Workflow Development, Erlangen, Germany

The present work applies a bSSFP NCE 4D MRA sequence with a temporal window covering two cardiac cycles (2 RR intervals) and assesses quality and diagnosis performance in ten patients with arteriovenous malformation. The sequence achieves high temporal and spatial resolution, yielding high-quality images with improved depiction of arterial feeding, nidus size and venous drainage compared with DSA. The venous drainage was better depicted with 2-RR than with 1-RR NCE MRA, improving AVM hemorrhagic risk evaluation, without any trade-off for the nidus delineation quality.

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Keywords

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