# Mesh alignment with 3D-CT volume
**URL:** https://discourse.paraview.org/t/mesh-alignment-with-3d-ct-volume/8465
**Category:** ParaView Support
**Created:** [November 23, 2021, 1:38pm UTC](https://discourse.paraview.org/t/mesh-alignment-with-3d-ct-volume/8465 "2021-11-23T13:38:30Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@chathu](https://discourse.paraview.org/u/chathu)
#### Post date: [November 23, 2021, 1:38pm UTC](https://discourse.paraview.org/t/mesh-alignment-with-3d-ct-volume/8465/1 "2021-11-23T13:38:30Z")
I have plotted the error for example, the difference between the ground-truth and the predicted volumetric meshes (.vtk format) on the predicted mesh / mesh coordinates with a different colour (colour code based on displacement magnitudes) to visualize how much deviation that each point has as shown in the attached image (for that I simply used python calculator filter). Now I want to align this colourized mesh to the corresponding 3D-CT volume and perform clipping or slicing to see the interior deformation.
How can I align with 3D-CT volume using paraview ? Is it possible in Paraview ? If so can you elaborate the steps with an example please ?
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [November 23, 2021, 4:06pm UTC](https://discourse.paraview.org/t/mesh-alignment-with-3d-ct-volume/8465/2 "2021-11-23T16:06:45Z")
It should be possible in ParaView, assuming you can load your CT data. However, you’ll have to do the alignment manually - there are no registration methods available in ParaView. You can use the Transform filter to apply transformations on the model points.