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.