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Abstract #3286

Accelerated 3D Radial Short Echo-Time MRI of the Knee Using Compressed Sensing

Sairam Geethanath1, Steen Moeller2, Vikram D. Kodibagkar, 13

1Joint program in biomedical engineering, UT Arlington/UT Southwestern Medical Center, Dallas, TX, United States; 2University of Minnesota, Minneapolis, MN, United States; 3School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States

Concurrent Dephasing and excitation (CODE) is a novel pulse sequence which facilitates imaging of short T2 components. Currently, exquisite 3D images can be acquired within minutes but imaging dynamics of the knee and T2 exchange contrast agents, would require an even faster imaging scheme. The application of compressed sensing to accelerate CODE MRI has been demonstrated on 5 knee data sets for acceleration factors of 2, 3, 4 and 5. Compressed sensing based reconstruction of the MR volume shows high fidelity with lower noise as quantified by root-mean-square-error with respect to the original full k-space reconstruction.