Re-using image co-registration parameters

I have some velocity-encoded MR images (magnitude and phase) which I would like to co-register. The magnitudes are clean, and allow for straightforward prior masking (according to a threshold), but it's the phase images that I really need to align. However, those are noisy and - worse than that - wrapped. How can I can co-register the magnitudes, then re-use the parameters of that transformation to co-register the phases ? The images are acquired simultaneously, so this is a valid thing to do.

Answer 1

[Matt J]

Apply imregtform() to the magnitude images to obtain the transformation parameters. Then apply the transformation to the phase images or whatever images you want using imwarp().