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Abstract #4266

Acceleration of the Cartesian acquisition of MR fingerprinting using the keyhole acquisition and view-sharing reconstruction

Ryoichi Sasaki1 and Yasuhiko Terada1

1Institute of Applied Physics, University of Tsukuba, Tsukuba, Japan

MR fingerprinting (MRF) is a promising approach that enables quantification of multiple tissue parameters at a single scan. MRF uses spiral sampling which requires a high fidelity of gradient hardware. Meanwhile, MRF with the Cartesian sampling is feasible for conventional scanners with the moderate hardware fidelity, but it comes at the cost of the elongation of the acquisition time. Here we propose an acceleration method for the Cartesian MRF acquisition that enables the 8-fold acceleration. The quantitative errors and undersampling artifacts in the T1 and T2 maps are alleviated by using the keyhole acquisition and view-sharing reconstruction.

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