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.