This is the approach I recommend (with spin echo scans as the ³2X
distortion scans²). It is a little better conditioned than a standard
field map approach because the cross-image registrations are a bit easier,
but assuming those registrations work well and the field map approach is
appropriately regularized they are equivalent.
Peace,
Matt.
On 4/28/18, 7:26 AM, "FSL - FMRIB's Software Library on behalf of Him
anshu" <[log in to unmask] on behalf of [log in to unmask]> wrote:
>Dear FSL Users,
>
>I would like to have your opinion regarding distortion correction
>procedure using 2X distortion scans (Anterior to Posterior and Posterior
>to anterior) to correct for the distortions present in my resting state
>EPI sequence
>
>Thanks and Regards
>Himanshu Joshi
|