# Atlas to DICOM convertion

**URL:** <https://discourse.slicer.org/t/atlas-to-dicom-convertion/19664>\
**Category:** Support\
**Tags:** dicom\
**Created:** [September 14, 2021, 12:58pm UTC](https://discourse.slicer.org/t/atlas-to-dicom-convertion/19664 "2021-09-14T12:58:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![R\_Rodriguez](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/r_rodriguez/32/10484_2.png) [@R\_Rodriguez](https://discourse.slicer.org/u/R_Rodriguez)\
**Post date:** [September 14, 2021, 12:58pm UTC](https://discourse.slicer.org/t/atlas-to-dicom-convertion/19664/1 "2021-09-14T12:58:47Z")

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Hi all  
I am trying to convert an atlas (binary 0/1 file, originally nifti format) into DICOM. Using “Create DICOM Series” I obtained completely white slices.  
Some help?  
Thank you in advance

Operating system: Windows  
Slicer version: 4.11

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [September 14, 2021, 1:10pm UTC](https://discourse.slicer.org/t/atlas-to-dicom-convertion/19664/2 "2021-09-14T13:10:39Z")

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Can you post an example file?

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 14, 2021, 1:47pm UTC](https://discourse.slicer.org/t/atlas-to-dicom-convertion/19664/3 "2021-09-14T13:47:06Z")

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The file is actually not all white, but intensity difference of 1 is so small that in many viewers will not see that subtle change with the default window/level settings.

“Atlas” is not a kind of image, but it refers to how you use that image, so there is no _atlas_ information object in DICOM. Instead, a binary (0/1) image is a _segmentation_, which can be [saved into DICOM as Segmentation Object or RT Structure Set information object](https://slicer.readthedocs.io/en/latest/user_guide/modules/segmentations.html#dicom-export).

If the external viewer does not support these information objects then you can make your binary file appear as a fake CT image by rescaling its intensity range. For example, you can keep the 0 HU (=water) as background, but change 1 to 1000 HU (=bone) for the foreground, using RescaleIntensityImageFilter in Simple Filters module.