mri_synthmorph is simply an amazing SOTA tool that I want to incorporate into all my pipelines. However, I am unsure how to convert the combined affine+nonlinear deformation image into a format that can be worked with by ants or FSL.

Optimally, synthmorph + lta_convert + mri_convert would provide tools to:

1. separate affine and nonlinear components of the registration (useful in certain applications)

2. convert freesurfer transforms to current standard formats (FSL and ITK ants)