Susceptibility-induced distortion that varies due to motion: Correction in diffusion MR without acquiring additional data.
NeuroImage(2018)
摘要
Because of their low bandwidth in the phase-encode (PE) direction, the susceptibility-induced off-resonance field causes distortions in echo planar imaging (EPI) images. It is therefore crucial to correct for susceptibility-induced distortions when performing diffusion studies using EPI. The susceptibility-induced field is caused by the object (head) disrupting the field and it is typically assumed that it remains constant within a framework defined by the object, (i.e. it follows the object as it moves in the scanner).
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关键词
Diffusion,Movement,Susceptibility,Registration,Dynamic
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