Apply transformation

[Adam1122]

Hello all,

I want to apply the saved transformation (a transformation matrix 4x4 acquired by registration of an anatomical and a diffusion image) on my input anatomical mask and change a final FOV by specifying a diffusion reference image (its voxels size). It means to apply the same command as the command ApplyXFM in FSL FLIRT. Does this option exist also in 3D Slicer?

Thanks a lot
Regards
Adam

[timeanddoctor (Li Zhenzhu)]

yes, see an example

Can I read and modify a transform matrix with python

can I read and modify a transform matrix with python directly(not the GUI of transform) in slicer. for example: Read display (transformMatrix) I will get a 4*4matrix: [ [ 1 0 0 52.64097] [ 0 1 0 -46.12696] [ 0 0 1 -0.48185] [ 0. 0. 0. 1. ]] Modify transformMatrix=np.array[ [ 0.92979 -0.26946 -0.25075 52.64097] [ 0.03835 0.74845 -0.66209 -46.12696] [ 0.36608 0.60599 0.70623 -0.48185] [ 0. 0. 0. 1. ]]

[manjula (Manjula Herath)]

@lassoan

You can find examples of how to set transforms in Transforms module documentation and in script repository.

I had the similar problem and this was Prof Lasso solution.

[Adam1122]

Yes, it´s working. Thanks a lot for your advice.