[Insight-users] Problem using itkResampleImageFilter

[Luis Ibanez]

Hi Rama,

If you want to overlay the anatomical structures
from both images (CT and PET) you can use a
registration algorithm.

Given that you have different image modalities
you should use one of the three implementaitons
of the MutualInformation metric available in ITK.

Please look at the Multi-modality registration
examples that Dr. Lydia Ng wrote for the Software
Guide


    http://www.itk.org/ItkSoftwareGuide.pdf


Section 8.4, pdf-page 255.


The corresponding code is available at


      Insight/Examples/Registration


In particular


      ImageRegistration2.cxx
      ImageRegistration4.cxx



Regards,


    Luis


----------------
CSPL wrote:

> Hello Luis,
>  
.....
>  
>     I have one more problem. I have resampled a PET binary mask image 
> (128x128x35) with spacing values as 4.296875/4.296875/4.25 into a CT 
> image (512x512x35) with spacing values 0.9765625/0.9765625/4.25. Now I 
> want to overlay the resampled image on to the CT image. But the mask 
> appears to have shifted. How do I overlay them on to each other?
>  
>     I was not successful in implementing the solution you suggested to 
> me the last time I have asked you for help on this issue. Please 
> indicate if I should use any other filters.
>  
>     Since after resampling both the CT image and the mask image have the 
> same properties, I thought I could map the images using pixels (not 
> physical length/space). I am unable to get any other idea to do this.
>  
>   Regards,
>     Rama Krishna. <mailto:nathkailas at hotmail.com>