Difference between revisions of "Projects/Diffusion/2007 Project Week DTI Registration"

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==Additional Information==
 
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[[Image:ptv.jpg|thumb|left|480px|Plot of MI versus xyz translation using PTV (T1 and T2 images)]]
 
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[[Image:mattes.jpg|thumb|left|480px|Same plot using Mattes ]]
 
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==Reference==
 
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* Wei.M, Liu.Jundong and Liu.Junhong Artifact reduction in mutual-information-based CT-MR image registration in Medical Imaging 2004: Image Processing
 
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* Liu.J Artifacts reduction in mutual information-based image registration using prior information in Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference
 

Revision as of 23:33, 28 June 2007

Home < Projects < Diffusion < 2007 Project Week DTI Registration
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Key Investigators

  • Utah: Ran Tao, Tom Fletcher, Ross Whitaker

Objective

We want to implement the Mutual Information metric using partial voluming for the registration of multi-modal images. The aim is to correct EPI distortions in diffusion-weighted images (DWIs).

Approach, Plan

Our approach is to register the DWIs to the baseline (B0) image using affine transformations and mutual information. We are implementing a version of MI that interpolates both joint histogram and partial voluming. This is smoother than the Mattes MI currently in ITK.

Progress

  • 3D mutual information metric has been implemented
  • Register T2 diffusion weighted image to its own baseline T2 image




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