Use spin echo data with matched echo spacing and geometry ideally. It can be very hard to distinguish between distortion and dropout visually, particularly if you don't have a lot of experience. Folks are making this mistake again and again unfortunately.
Matt.
On 8/26/22, 5:47 AM, "FSL - FMRIB's Software Library on behalf of Alberto Inuggi" <[log in to unmask] on behalf of [log in to unmask]> wrote:
thanks Matt and Jesper for your answers.
our resting state and fmri sequences are EPI-GRE.
after visual inspection, as you suggested, results seems fine.
For future recordings, assuming "...GRE images are not recommended for use in computing a topup field....."
what would you suggest me to correct my epi-gre?
thanks in advance
regards,
Alberto
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