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Abstract #0220

Improved Agreement of Cerebral Arterial Blood Flow Velocity Measures Using 3D Quantitative QISS MRA

Ioannis Koktzoglou1,2, Rong Huang1, and Robert R Edelman1,3
1Radiology, NorthShore University HealthSystem, Evanston, IL, United States, 2Radiology, Pritzker School of Medicine, University of Chicago, Chicago, IL, United States, 3Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States


Quantitative time of flight (qTOF) is a recently described 3D magnetic resonance angiography (MRA) technique for simultaneous luminal and hemodynamic evaluation of the intracranial arteries, that provides higher contrast-to-noise ratio efficiency than 3D phase contrast (PC) MRA and reduces in-plane flow displacement artifacts visible on standard 3D TOF MRA. We hypothesized that the use of a quiescent interval slice-selective-based data acquisition strategy (qQISS) that boosts arterial-to-background contrast might improve the quantitation of intracranial arterial flow velocity. Compared to qTOF MRA, we found that qQISS MRA improved agreement with PC MRA for measuring intracranial blood velocity.

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