Multi-Channel PROPELLER-MRI Acceleration using NUFFT Compressed Sensing at Mid-Field MRI of 0.5T

Motivation: Mid-field MRI have lower SNR so data acquisition is associated with longer data acquisition time. Therefore, develop fast imaging technique with motion robust data acquisition with minimal SNR penalty due to fast imaging. Goal(s): Develop a robust image reconstruction technique for compressed sensing (CS) accelerated PROPELLER acquisitions. Approach: A new iterative reconstruction technique based on NUFTT and CS for PROPELLER acquisitions. Results: MRI imaging of ISMRM-NIST phantom and volunteer scan were acquired and reconstructed with minimal under-sampling artifacts such as haze and streaks with PROPELLER acceleration. Impact: Compressed sense accelerated PROPELLER can acquire high quality motion robust MRI images at mid-field MRI. Proposed MR image reconstruction technique for compressed sensing accelerated PROPELLER technique can enable acquisitions requiring longer scan time due to SNR.