Difference between revisions of "Projects:RegistrationEvaluation"

From NAMIC Wiki
Jump to: navigation, search
Line 15: Line 15:
 
The problem can be alleviated by 2D affine registration between slices of a corrupted volume with the corresponding slice from the b0 volume, in which we assume the artifact
 
The problem can be alleviated by 2D affine registration between slices of a corrupted volume with the corresponding slice from the b0 volume, in which we assume the artifact
 
is not present.
 
is not present.
 +
 +
== ITK ==
  
 
[[Image:itk_reg.png|300px]]   
 
[[Image:itk_reg.png|300px]]   

Revision as of 00:34, 7 October 2009

Home < Projects:RegistrationEvaluation

Evaluation of Registration

We are interested in comparing existing registration packages to determine how registration in Slicer3 can be improved. This work focuses on examining various packages researchers are currently using for registration and comparing results on a set of examples representative of common registration tasks. Finally, we propose the development of a testbed, where registration packages can be compared and parameters suitable for a given domain (e.g. multi-modal brain registration) can be determined.

Example 1: Fixing Artifacts in DWI

The DWI data consists of 13 volumes -- a b0 and 12 gradient directions. This process was conducted 3 times per patient for a total of 39 volumes. The image below shows a particular slice in all 12 gradient directions and all 3 scans where the artifacts can clearly be seen in some of the gradient directions.

Orig all.png

The problem can be alleviated by 2D affine registration between slices of a corrupted volume with the corresponding slice from the b0 volume, in which we assume the artifact is not present.

ITK

Itk reg.png

Itk fixed volume 006.png

Testbed