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Abstract #4860

Direct Reconstruction of B1 Maps from Undersampled Acquisitions

Francesco Padormo1, Shaihan J. Malik1, Jo V. Hajnal1

1Robert Steiner MRI Unit, Imaging Sciences Department, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College London, London, United Kingdom

We present a method utilizing the smoothness of the B1+ field to accelerate flip angle mapping. By randomly undersampling k-space and using a Compressed Sensing type reconstruction, we show that accurate flip angle distributions can be found with only 40% of the original data.