Abstract #1345

T1 and T2 mapping using highly accelerated radial data acquisition and alternating direction method of multipliers

Zhiyang Fu¹, Zhitao Li¹, Mahesh Bharath Keerthivasan¹, Diego R Martin², Maria I Altbach², and Ali Bilgin^1,2,3

¹Electrical and Computer Engineering, University of Arizona, Tucson, AZ, United States, ²Department of Medical Imaging, University of Arizona, Tucson, AZ, United States, ³Biomedical Engineering, University of Arizona, Tucson, AZ, United States

Quantitative MRI requires accurate parameter estimation but long acquisition time limits the use of conventional techniques in the clinic. Recently, several T1 and T2 mapping methods based on highly accelerated radial trajectories have been proposed. The reconstruction problems in these works are formulated as unconstrained optimizations and solved using the non-linear conjugate gradient method. We propose an alternative formulation based on the alternating direction method of multipliers which reduces reconstruction time without compromising reconstruction quality.

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