syn-sdc largely suboptimal results

[dorianps]

I mentioned in Neurostars that the syn-sdc we get are not good. As suggested (I think by @effigies) I am posting a couple of examples here for your review.

Please note that my area of research focuses on basal ganglia (caudate and putamen more), so we focus a lot on the ventricles going into place after the correction.

These are cases where we have fieldmaps and compare fmb-sdc with syn-sdc figures. Since SVG files cannot be uploaded in github, I have added some screen recordings in the attached powerpoint file.

Syn-SDC_subptimal.pptx

We don't have a lot cases without fieldmaps, but looks like those without fieldmaps are a lost case, particularly from Philips scanners.