Sensitivity Encoded Proton Echo Planar Spectroscopic Imaging (SENSE-PEPSI) on Human Brain Using a Large-N Coil Array
Lin F, Posse S, Tsai S, Chung H, Ko C, Wald L
Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital
Parallel MRI techniques have been demonstrated to be capable of accelerating data acquisition by using spatial information from RF array coils to substitute for a portion of the data that would normally be acquired using sequentially-applied magnetic field gradients. This is particularly advantageous for spectroscopic imaging (SI) to reduce the long encoding times associated with phase encoding. Proton Echo Planar Spectroscopic Imaging (PEPSI) provides much faster acceleration with a scan time of a minute for a 32x32 spatial matrix. Here, we report initial in-vivo results using a combination of parallel MRI and PEPSI to further accelerate the SI data acquisition.