Anuj Sharma1, 2, Sasidhar Tadanki1, 3, Marcin Jankiewicz1, 3, William A. Grissom1, 2
1Vanderbilt University Institute of Imaging Science, Vanderbilt University, Nashville, TN, United States; 2Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, United States; 3Department of Radiology, Vanderbilt University, Nashville, TN, United States
A method to accelerate Bloch-Siegert B1+ mapping beyond the number of receive channels is presented, in which the Bloch-Siegert phase shift is incorporated into the receive sensitivities for the purposes of reconstruction, leading to an augmented set of virtual receive coils. Results show that the method achieves low B1+ map reconstruction error for a 4-coil 7T TEM transmit array with a factor of 25 acceleration using only 8 physical receive coils