[Insight-users] deformation field for large shear in soft material

[Dawood Masslawi]

Dear Tim,
Try to increase the number of iterations or refine your B-Spline grid. Another approach
is to use the KernelTransforms in the ITK which have a stiffness property you can set.
Best regards,
Dawood Almasslawi

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Hi all,

I am trying to quantify the deformation of a soft tissue due to injurious stimuli. I am taking over some code left to me by a colleague that utilizes b-spline deformable registration tools, but there is clear mention of the limitations of this tool in circumstances where the object undergoes a lot of shearing motion.

Is there any way to get a reasonably accurate measure of the deformation field in instances of high shear, or is it that there is simply not enough mutual information between pre-deformation and post-deformation images to match up? Is there a certain strain (%) that the b-spline deformable registration tool can accommodate?

Any and all suggestions are very welcome - I'm also very new to the world of ITK.

Thanks greatly,

-- 
Tim Bhatnagar


      
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