Abstract #0331

Accelerated Proton Echo-Planar Spectroscopic Imaging Using Parallel Imaging and Compressed Sensing

Ricardo Otazo¹, Daniel K. Sodickson¹, Akio Yoshimoto², Stefan Posse^2,3

¹Center for Biomedical Imaging, NYU School of Medicine, New York, NY, USA; ²Electrical and Computer Engineering Department, University of New Mexico, Albuquerque, NM, USA; ³Department of Neurology, University of New Mexico, Albuquerque, NM, USA

Compressed sensing and parallel imaging are combined into a single joint reconstruction to accelerate Proton Echo Planar Spectroscopic Imaging (PEPSI). The method exploits the joint sparsity in the sensitivity-encoded images to achieve higher accelerations than for coil-by-coil compressed-sensing or parallel imaging alone. We demonstrate the feasibility of simulated 4-fold acceleration for human brain PEPSI using a standard 12-channel array coil.