Abstract #2842

Phase Constrained Compressed Sensing with Applications for PRF Temperature Mapping

Zhipeng Cao¹, Christopher T. Sica², Philipp Ehses³, Sukhoon Oh², Yeun C. Ryu², Christopher M. Collins^1,2, Mark A. Griswold⁴

¹Bioengineering, the Pennsylvania State University, Hershey, PA, United States; ²Radiology, the Pennsylvania State University, Hershey, PA, United States; ³Research Center for Magnetic Resonance Bavaria (MRB), Wrzburg, Germany; ⁴Radiology, Case Western Reserve University, Cleveland, OH, United States

A phase-constrained compressed sensing reconstruction method is proposed. It is validated through simulation and experiments to be effective on smooth or focal, mild or dramatic temperature changes for rapid MRI temperature mapping both on phantom and in vivo based on proton resonance frequency shift. The method can also be combined with partially parallel acquisition techniques for additional acceleration.