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Abstract #0840

Echo-train bSSFP for Rapid Golden-angle Radial Sampling

Kaibao Sun1, Zheng Zhong1,2, Kezhou Wang1, and Xiaohong Joe Zhou1,2,3
1Center for MR Research, University of Illinois at Chicago, Chicago, IL, United States, 2Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States, 3Departments of Radiology and Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States

Golden-angle radial sampling based on single-echo bSSFP has been increasingly used in MRI. In a method known as ETGAR (echo-train golden-angle radial), a series of spokes separated by a golden angle are acquired within a TR to accelerate data sampling. A main disadvantage is that the large inter-echo steering gradients can lead to a longer TR and trigger eddy currents. We herein demonstrate an alternative golden-angle radial sequence – ETGAR-II – to overcome the afore-mentioned issues. This novel sequence, together with an integrated phase-correction algorithm has been demonstrated on phantoms and human to obtain high quality images with 36% scan time reduction.

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