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Abstract #2833

Compressive B1+ Mapping: Towards Faster Transmit Coil Sensitivity Mapping

Mariya Doneva1, Kay Nehrke2, Alfred Mertins1, Peter Brnert2

1Institute for Signal Processing, University of Lbeck, Lbeck, Germany; 2Philips Research Europe, Germany

The potential to accelerate the B1+ mapping measurement by means of compressed sensing (CS) was investigated. Joint sparsity constraint accounting for the common sparsity support in different TX channels, and higher dimensional undersampling space, also including the coil dimension, allow for considerable acceleration even for the low resolution data acquired in B1+ mapping. The basic feasibility of the proposed method is evaluated on simulations and in vivo data from a 3T 8-channel parallel transmit system.