Abstract #3079

Compressive Slice Encoding for Metal Artifact Correction

Wenmiao Lu¹, Kim Butts Pauly², Garry Evan Gold², John Mark Pauly³, Brian Andrew Hargreaves²

¹Electrical & Electronic Engr., Nanyang Tech. University, Singapore, Singapore; ²Radiology, Stanford University, Stanford, CA, United States; ³Electrical Engr., Stanford University, Stanford, CA, United States

Metal artifacts in MRI can be completely corrected by Slice Encoding for Metal Artifact Correction (SEMAC), which nonetheless incurs prolonged scan times due to the additional phase encoding along slice-select direction. Here we incorporate SEMAC with compressed sensing to vastly reduce the number of phase encoding steps required to resolve metal artifacts. The new technique, referred to as Compressive SEMAC, can greatly reduce scan times, while producing high-quality distortion correction and SNR comparable to SEMAC with full sampling.