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Abstract #0179

X-PROP: A Fast & Robust Diffusion-Weighted PROPELLER Technique

Zhiqiang Li1, James G. Pipe2, Chu-Yu Lee2,3, Josef P. Debbins2,3, John P. Karis4, Donglai Huo1,2

1MR Engineering, GE Healthcare, Waukesha, WI, USA; 2Neuroimaging Research, Barrow Neurological Institute, Phoenix, AZ, USA; 3Electrical Engineering, Arizona State University, Tempe, AZ, USA; 4Radiology, Barrow Neurological Institute, Phoenix, AZ, USA

DW-PROPELLER techniques have the advantages such as no susceptibility artifacts and the capability for high-resolution imaging. In TurboPROP, gradient and spin echoes are grouped together to form a wider blade, providing robustness to motion but leading to off-resonance artifact. A variant of split-blade TurboPROP was proposed by separating the gradient and spin echoes into individual blades. However, the robustness to motion is lost due to the smaller overlapping area in the center of k-space. To address this issue, X-PROP is proposed by spreading the blades from one TR uniformly in k-space and removing the motion-induced phase error.