# Is itk able to preserve the VOI LUT, windows level.. to use vtk afterwards with all the info

**URL:** https://discourse.itk.org/t/is-itk-able-to-preserve-the-voi-lut-windows-level-to-use-vtk-afterwards-with-all-the-info/1671
**Category:** Uncategorized
**Created:** [March 15, 2019, 9:34am UTC](https://discourse.itk.org/t/is-itk-able-to-preserve-the-voi-lut-windows-level-to-use-vtk-afterwards-with-all-the-info/1671 "2019-03-15T09:34:38Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![zandarina](https://discourse.itk.org/letter_avatar_proxy/v4/letter/z/4af34b/32.png) [@zandarina](https://discourse.itk.org/u/zandarina)
#### Post date: [March 15, 2019, 9:34am UTC](https://discourse.itk.org/t/is-itk-able-to-preserve-the-voi-lut-windows-level-to-use-vtk-afterwards-with-all-the-info/1671/1 "2019-03-15T09:34:38Z")

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Dear all,

I have to perform some segmentation and visualize it in vtk. I wonder if i read the dicom series in itk first, i wonder if it will lose the voi lut, windows level to show in vtk.

So my question is if itk preserves all the voi lut, windows level information. I know it keeps the modality lut but i wonder about the other properties of the dicom. If this is not the case i will have to updload the dicom series in vtk first. O there is any other way to give this info to vtk without loading the volume twice?

Thanks  
Cheers

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### Author: ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [March 15, 2019, 1:27pm UTC](https://discourse.itk.org/t/is-itk-able-to-preserve-the-voi-lut-windows-level-to-use-vtk-afterwards-with-all-the-info/1671/2 "2019-03-15T13:27:52Z")

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You should examine MetaDataDictionary. Here is an [example](https://itk.org/Doxygen/html/Examples_2IO_2DicomSeriesReadPrintTags_8cxx-example.html) of how to access it.