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Abstract #2571

3D T2w-MRI using a Magnetization-Prepared Golden Angle Radial Sequence with Motion-Corrected ESPIRiT Reconstruction

Isabel Dregely 1 , Fei Han 1 , Ziwu Zhou 1 , Kyung Sung 1 , Peng Hu 1 , and Holden H Wu 1

1 Radiological Sciences, University of California Los Angeles, Los Angeles, CA, United States

T2-weighted MRI is the central component for body cancer MRI protocols. In clinical routine T2-w MRI is often restricted to 2D multi-slice acquisitions, because 3D acquisition times are relatively long and achieving robustly good image quality is often hindered by motion corruption. The purpose of our work was to develop a 3D T2-w motion robust imaging sequence using a magnetization-prepared radial imaging technique with self-navigating motion correction. We found that bulk and respiratory motion could be reliably detected using the self-navigating radial sequence. The golden angle view ordering allowed for flexible retrospective image reconstruction, allowing removing motion-corrupted views. ESPIRiT reconstruction yielded good image quality even in under-sampled data sets.

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