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Abstract #2141

An Extended Fast Spin-Echo Triple-Echo Dixon Technique with Flexible Echo Separations

Jong Bum Son 1 , Ken-Pin Hwang 1,2 , John Madewell 3 , Ersin Bayram 2 , John Hazle 1 , and Jingfei Ma 1

1 Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States, 2 Global MR Applications and Workflow, GE Healthcare, Houston, TX, United States, 3 Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States

Fast spin echo triple-echo Dixon (FTED) acquires one in-phase (IP) and two out-of-phase (OP) images in a single acquisition without interleave. A potential drawback is that echo separation between the three readout gradients is fixed so that the minimum echo spacing of FTED as well as some scan parameters is not flexible. In this work, we propose an extended FTED pulse sequence in which the echo separation between the three readout gradients is mostly determined by the scan parameters. The proposed approach is capable of producing uniformly separated water and fat images with minimum echo spacing and adjustable scan parameters.

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