[Insight-users] Inter-slice Movement Correction

[Don Bigler]

ITK-Users,
    I am attempting to fix an interesting MRI artifact that occurs 
during long acquisitions.  The scanner uses multiple packages to acquire 
the entire head image and if the patient moves at all during the scan an 
inter-slice misregistration occurs.  Affine normalization of the image 
to a template does not fix the artifact.  I attempted to fix the problem 
by performing a 2D rigid body registration from one slice to the next 
using the ImageRegistration5.cxx example as a guide.  It uses the 
CenteredRigid2DTransform, MeanSquaresImageToImageMetric, and 
LinearInterpolateImageFunction.  I successfully modified the code to run 
from one slice to the next using a 3D volume as input, however it did 
not fix the problem.  Here are my questions:

1. Would the approach work better using another metric?
2. Is there a better approach to solving this problem?

Thank you for your time.
Don Bigler

-- 
Don Bigler
The Pennsylvania State University
NMR Building
H066 Radiology
Hershey Medical Center
Hershey, PA 17033 
Phone: (717)531-5858
Fax: (717)531-8486

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