Double Background Suppression in Quiescent Inflow Single-Shot Imaging at 3T

Background suppression (BGS) in QISS is performed by an imaging slice saturation pulse. We hypothesize that the extended tracking saturation pulse together with the imaging saturation pulse may offer improved background suppression. We tested three BGS methods at calf station at 3T: A) using the imaging slice saturation for single background suppression; B) extended tracking saturation slice to cover the imaging slab for double background suppression; C) extended tracking saturation slab for background suppression without imaging slice saturation pulse. We found that double BGS can greatly reduce the background signal and offers the highest CNR for arterial blood signal.

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