Diffeomorphic Registration using SyNRA

[asmaharry]

Diffeomorphic Registration using SyNRA with MI and reg_iterations=(40,20,0), on an image size of 240240155 took only 3 minutes, I am confused how this diffeomorphic registration is too fast? or is there any other parameters that i have to set.
please suggest me a good transformation type for diffeomorphic registration and the other parameters.

Originally posted by @asmaharry in #939 (comment)

[cookpa]

Try antsRegistrationSyNQuick.sh and then antsRegistrationSyN.sh for parameter suggestions.

[cookpa]

I think the "SyNRA" option is only in ANTsPy, in which case this issue really belongs on the ANTsPy page. It looks like RA means rigid + affine, so no deformable registration will be done with this option. That would explain why it's so fast.

There should be an option to do rigid + affine + deformable SyN.

[asmaharry]

yes, you are right this is something like rigid+affine+deformable. can you please suggest me an option for deformable registration? I also tried SyN with CC and with MI.

[cookpa]

If you run antsRegistrationSyN.sh with -t s, it will run a registration with some sensible parameters. It will print the exact call to antsRegistration so you can adjust from there.

For how to do this in Python, you'll need to ask on the ANTsPy page.