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Abstract #2944

Comparison of 2D Iterative Frame Based and 3D Direct Compressed Sensing Reconstruction for Accelerated Phosphorus MR Spectroscopic Imaging of Human Brain

Gokce Hale Hatay 1 , Emre Okeer 2 , Bahattin Hakyemez 2 , and Esin Ozturk-Isik 3

1 Department of Electrical and Electronics Engineering, Yeditepe University, Istanbul, Turkey, 2 Department of Radiology, Uludag University, Bursa, Turkey, 3 Department of Biomedical Engineering, Yeditepe University, Istanbul, Turkey

This study aims to investigate the relative performances of 2D iterative frame based and a 3D direct improve the feasibility of 3D direct compressed sensing reconstruction for faster phosphorus MR spectroscopic imaging (31P MRSI) with comparing 2D iterative frame based reconstruction. A 31P MR spectrum was acquired from the frontoparietal lobe of a volunteer at 3T, and two dimensional 31P MRSI datasets that included a tumor region and a healthy region were created. k-space data was randomly undersampled with two patterns while preserving the central part for reduction factor of 4.26 for 16x16 and 3.71 for 32x32 arrays. This study showed that 3D direct compressed sensing reconstruction works better than 2D iterative frame based reconstruction.

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