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Abstract #0626

HYPR FLOW Dynamic MR Angiography in Intracrianal Arterio-Venous Malformations: Comparison to TRICKS MR Angiography and Catheter Angiography.

Raphal Dautry1, Pauline Roca1, Myriam Edjlali-Goujon1, Ccile Rabrait2, Kevin M. Johnson3, Yijing Wu3, Olivier Naggara1, Christine Rodriguez1, Fawaz Alshareef1, Olivier Wieben3, Catherine Oppenheim1, Jean-Franois Meder1

1Neuroradiology, Centre hospitalier Sainte Anne, Paris, France; 2GE healthcare, Vlizy Villacoublay, France; 3Departments of Medical Physics and Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States

Non-invasive MR Angiography (MRA) is routinely used for the characterization of cerebral Arterio-Venous Malformations (AVMs), but the gold-standard imaging technique remains catheter angiography. We compared HYPR FLOW, a novel MRA method that provides sub-millimeter spatial resolution and sub-second temporal resolution, to TRICKS MRA for the characterization of AVMs, using angiography as a reference. HYPR FLOW was superior to TRICKS for the analysis of vascular enhancement kinetics and for the characterization of several AVMs key parameters, including venous drainage, arterial feeders and venous ectasia. HYPR FLOW could replace TRICKS or other MRA techniques for the characterization and follow-up of AVMs.

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