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A Nyquist modulated echo-to-view mapping scheme for fast spin-echo imaging.

P J Keller·J E Heiserman·E K Fram·S D Rand·B P Drayer
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Abstract

A new scheme for assignment of echoes to views in fast spin-echo imaging was developed. The scheme places early and late echoes in alternating lines of the periphery of k-space; continued alternation of echoes arising closer to the middle of the echo train encodes the central portion of k-space. The scheme has two effects: a) The echo-to-echo signal decay that usually gives rise to multiple faint ghosts, now yields a single Nyquist ghost that is removed by phase over-sampling. b) Mapping earlier echoes (and thus more energy) to the periphery of k-space yields sharper edges.

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HumansImage EnhancementMagnetic Resonance ImagingJournal ArticleResearch Support, Non-U.S. Gov't

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P J Keller, J E Heiserman, E K Fram, S D Rand, B P Drayer. 1995. A Nyquist modulated echo-to-view mapping scheme for fast spin-echo imaging.. https://doi.org/10.1002/mrm.1910330615

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