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Abstract #4206

Free-Breathing Dynamic Contrast-Enhanced MRI of the Liver with Radial Golden-Angle Sampling Scheme and Advanced Compressed-Sensing Reconstruction.

Hersh Chandarana1, Li Feng1, Tobias Kai Block1, Andrew B. Rosenkrantz1, Ruth P. Lim1, Dewey Chu1, Daniel K. Sodickson1, Ricardo Otazo1

1Radiology, NYU Langone Medical Center, New York, NY, United States

Dynamic post-contrast liver MR examination is performed with Cartesian k-space sampling in a breath-hold (BH). However, this results in non-diagnostic images in patients who cannot adequately breath-hold. Purpose of this study was to compare image quality of free-breathing radial (interleaved angle-bisection and golden angle) acquisition schemes reconstructed with either view sharing (KWIC) or joint compressed-sensing and parallel imaging reconstruction (CS-PI), to conventional BH exam. Our results demonstrate that free-breathing radial golden angle trajectory continuous acquisition scheme with CS-PI reconstruction has image quality comparable to a breath-hold exam and significantly better than interleaved radial acquisition with KWIC or CS-PI reconstruction.