Spiral imaging substantially shortens MR fingerprinting acquisitions to tolerable scan times. Also more traditional “state-of-the-art” parametric mapping techniques can potentially benefit from the speed-up ability of fast spiral trajectories as opposed to Cartesian sampling. Here, a variable flip angle T1 quantification approach based on an interleaved 2D spiral multi-slice spoiled gradient echo sequence is combined with a steady-state preparation scheme. The investigated method offers accurate whole-brain T1 determination at clinically relevant resolution in only half a minute (including the B1 mapping scan in about 40 s) with an acceleration factor of an order of magnitude compared to conventional Cartesian sampling.
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