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Abstract #3999

Golden-Ratio Rotated Stack-of-Stars Acquisition for Improved Volumetric MRI

Ziwu Zhou1, Fei Han1, Lirong Yan2, Danny J.J. Wang2, and Peng Hu1

1Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, United States, 2Neurology, University of Southern California, Los Angeles, CA, United States

In this abstract, we developed and evaluated an improved stack-of-stars (SOS) sampling strategy that can efficiently sample 3D k-space and reduce streaking artifacts. Compared with conventional SOS sampling strategies that collect the same radial angle for every slice, proposed method rotates the spokes in a golden-angle manner along the slice direction, which modifies the aliasing pattern resulted from k-space under-sampling. With either gridding reconstruction or more advanced methods, proposed rotated SOS sampling strategy provides improved image quality with reduced streaking artifacts and better delineation of fine structures.

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