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Abstract #4778

Clinical values of IFIR 4D MRA in evaluation of cerebral arteriovenous malformation

Akira Kunimatsu 1 , Yasushi Watanabe 2 , Naoyuki Takei 3 , Masaki Katsura 1 , Harushi Mori 1 , and Kuni Ohtomo 1

1 Department of Radiology, The University of Tokyo, Tokyo, Japan, 2 Department of Radiology, The University of Tokyo Hospital, Tokyo, Japan, 3 Global MR Applications and Workflow, GE Healthcare, Japan

We assessed clinical utilities of an ASL-based non-contrast 4D MRA (inflow enhanced inversion recovery (IFIR) 4D MRA) incorporated into routine MRI protocols for patients with cerebral arteriovenous malformation (AVM). Non-contrast IFIR 4D MRA has a high spatial resolution almost equivalent to that of 3D TOF MRA and also can provide a higher temporal resolution than contrast-enhanced time-resolved MRA. Non-contrast IFIR 4D MRA was found to add hemodynamic information to 3D TOF MRA and can be an alternative to contrast-enhanced time-resolved MRA in evaluation of cerebral AVM.

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