[Insight-users] The Insight Journal-New Submission
Insight Journal
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Thu Aug 12 10:02:49 EDT 2010
Hello,
A new submission has been added to the Insight Journal.
Title: An ITK Implementation of a Diffusion Tensor Images Resampling Filter
Author(s):Budin F., Bouix S., Shenton M., Styner M., Oguz I.
Abstract:
This paper describes the implementation of a resampling ï¬lter for Diffusion Tensor Images (DTI) in the Insight ToolKit (ITK). ITK already contains a ï¬lter for resampling scalar and vector images as well as several transformation and interpolation classes. However, due to the directional nature of DT images, using the existing classes would result in losing the structural information of the image.
We developed a new resampling ï¬lter, speciï¬c to DTI, that preserves the structure by applying a rotation directly on the tensors while performing the transformation of the image. New transformation and interpolator classes have also been implemented to handle tensors correctly. The new transformation classes are based on algorithms described by D.C. Alexander et al. Finally, three ï¬lters have been written to correct symmetric semi-deï¬nite matrices that would no longer be positive after the resampling process and project them into the tensorsâ space. In addition, a software based on the new classes has been developed and is provided with this article.
Download and Review the paper at: http://www.insight-journal.org/browse/publication/742
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