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Abstract #0042

Evolution-time encoded single-scan cross spatiotemporal encoding imaging near metal implants

Zhiyong Zhang1,2, Amir Seginer1, and Lucio Frydman1

1Chemical Physics, Weizmann Institute of Science, Rehovot, Israel, 2Electronic Science, Xiamen University, Xiamen, China, People's Republic of

Magnetic resonance imaging (MRI) near metallic implants remains an unmet need because of severe artifacts, which mainly stem from large metal-induced field inhomogeneities. The single-scan cross spatiotemporal encoding (xSPEN) technique delivers in-plane distortion-free 2D images under such large field inhomogeneity condition, while the slice-plane displacement, “signal voids” and “pile-up” effects are proposed to be solved by applying t1-evolution-time encoding on the multi-slicing 2D xSPEN technique. Compared to the popular “SEMAC” and “MAVIC” techniques, the remarkable time efficiency of this t1-encoding xSPEN thus enable many advanced MRI applications near metal implants with another additional dimension, such as diffusing MRI, function MRI.

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