Overcoming Coil Phase Effects in Highly Accelerated Imaging with a Dedicated Fourth Gradient Channel

¹Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA; ²Biomedical Engineering, Texas A&M University, College Station, TX, USA

Wide field of view magnetic resonance microscopy using RF coils of similar dimension to the voxel sizes requires use of a phase compensation gradient to compensate for the phase pattern of each RF coil. However the necessary phase shift is dependent on the position of the voxel relative to the RF coil. A fourth gradient channel and gradient coil were implemented to create a y dependent x gradient, allowing simultaneous phase compensation over a range of distances from the RF coils, thus allowing the use of 3D imaging and dual or sandwich arrays.