[Insight-users] MultiResolutionPDEDeformableRegistration warping

[Michael G]

Hello all,

I've been working with the MultiResolutionPDEDeformableRegistration 
registration method and am getting odd results. Initially I was using the 
DemonsRegistrationFilter method because I was getting great results with it, 
but it was taking about 11 seconds a slice to register and was hoping the 
MultiResolutionPDEDeformableRegistration would speed things up. The doxygen 
notes say that MultiResolutionPDEDeformableRegistration uses the 
DemonsRegistrationFilter as its internal registration method by default. But 
I am getting some serious warping around the edges of my output images after 
registration is complete. Are there any examples of using 
MultiResolutionPDEDeformableRegistration that I can look at? What parameters 
could I be fouling up to create such intense distortion? I've normalized the 
input images in the same way I would before handing them to the 
DemonsRegistrationFilter method.

My goal is to register breast MRI images with a contrast agent injection - 
is there a more optimal registration method to use for this that ITK offers 
besides the DemonsRegistrationFilter or 
MultiResolutionPDEDeformableRegistration?

Thank you,
Michael

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