Keywords: Biology, Models, Methods, Data Acquisition, EPSI, flyback readout, ghost artifacts, micro-imaging, water-fat imaging
Motivation: To assess echo-planar spectroscopic imaging (EPSI) with flyback readout gradients in preclinical MR system.
Goal(s): To demonstrate spectral ghost artifacts produced by two, three, and four interleaved gradient echo trains and to measure water, fat, and water-fat shift artifacts free images.
Approach: Flyback EPSI with two, three, and four interleaved gradient echo trains.
Results: The proposed approach with four interleaved gradient echo trains and with four echoes in each train enables high spectral bandwidth in combination with narrow receiver bandwidth and a very good water/fat signals separation. It improves SNR without the undesired consequence of water-fat shift artifacts.
Impact: Echo-planar spectroscopic imaging with flyback readout enables measurement of water, fat, and water-fat shift artifact-free images. Four interleaved echo trains with four echoes in each train provide high spectral, and narrow receiver bandwidth, and a very good water-fat separation.
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