# Registering several non-orthogonal slices into volume
**URL:** https://discourse.itk.org/t/registering-several-non-orthogonal-slices-into-volume/1976
**Category:** Uncategorized
**Created:** [June 18, 2019, 8:33am UTC](https://discourse.itk.org/t/registering-several-non-orthogonal-slices-into-volume/1976 "2019-06-18T08:33:00Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@SMT](https://discourse.itk.org/u/SMT)
#### Post date: [June 18, 2019, 8:33am UTC](https://discourse.itk.org/t/registering-several-non-orthogonal-slices-into-volume/1976/1 "2019-06-18T08:33:00Z")
Hello,
I am using ITK and SimpleITK in Python. I would like to register multiple slices with known relative orientation into a volume. I found this page with similar topic [https://itk.org/pipermail/community/2014-September/007124.html](https://itk.org/pipermail/community/2014-September/007124.html)
However I don’t have orthogonal slices and I tried the method of pasting the slices into a volume anyway but the error is high and for the proposition to “modify a similarity metric to accept multiple images” I just didn’t find any ITK documentation or example from which to deduce how to do that…
Any help would be appreciated!
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### Author:  [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [June 18, 2019, 2:38pm UTC](https://discourse.itk.org/t/registering-several-non-orthogonal-slices-into-volume/1976/2 "2019-06-18T14:38:07Z")
Welcome to the community Sandra!
[Plus](https://plustoolkit.github.io/) has an [implementation](http://perk-software.cs.queensu.ca/plus/doc/nightly/user/AlgorithmVolumeReconstruction.html) of merging slices in arbitrary orientations into a volume. It is based on VTK, not ITK, but you could probably use it as a building block since it is open source too.
@lassoan answered the question you linked, and is the maintainer of Plus. He might have additional suggestions for you.
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### Author:  [@lassoan](https://discourse.itk.org/u/lassoan)
#### Post date: [June 18, 2019, 3:11pm UTC](https://discourse.itk.org/t/registering-several-non-orthogonal-slices-into-volume/1976/3 "2019-06-18T15:11:59Z")
Yes, Plus toolkit’s VolumeReconstructor does exactly this. See some details in this [answer to a similar question](https://discourse.slicer.org/t/creating-mha-files/6557). If you have any specific question about Plus toolkit, [submit an issue to its issue tracker](https://github.com/PlusToolkit/PlusLib/issues/new).