# Assigning angle information to tiff images for CT scan 

**URL:** <https://discourse.slicer.org/t/assigning-angle-information-to-tiff-images-for-ct-scan/3936>\
**Category:** Support\
**Created:** [August 29, 2018, 11:56am UTC](https://discourse.slicer.org/t/assigning-angle-information-to-tiff-images-for-ct-scan/3936 "2018-08-29T11:56:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Isabel\_Gordon](https://avatars.discourse-cdn.com/v4/letter/i/e99b99/32.png) [@Isabel\_Gordon](https://discourse.slicer.org/u/Isabel_Gordon)\
**Post date:** [August 29, 2018, 11:56am UTC](https://discourse.slicer.org/t/assigning-angle-information-to-tiff-images-for-ct-scan/3936/1 "2018-08-29T11:56:40Z")

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Hi,  
Fairly new to Slicer and have been given a sequence of CT images from a collegue.  
The Images are a list of tiffs each from at specific angle. I have the corresponding angle of each of these but I am unsure how to marry them.

Thanks.

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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:** [August 29, 2018, 12:52pm UTC](https://discourse.slicer.org/t/assigning-angle-information-to-tiff-images-for-ct-scan/3936/2 "2018-08-29T12:52:26Z")

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It sounds like you have just the projection images and you need to reconstruct volumes before they can be used in Slicer.

This tool might help: [https://www.openrtk.org/](https://www.openrtk.org/)

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**Author:** ![Isabel\_Gordon](https://avatars.discourse-cdn.com/v4/letter/i/e99b99/32.png) [@Isabel\_Gordon](https://discourse.slicer.org/u/Isabel_Gordon)\
**Post date:** [August 29, 2018, 5:51pm UTC](https://discourse.slicer.org/t/assigning-angle-information-to-tiff-images-for-ct-scan/3936/3 "2018-08-29T17:51:27Z")

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Many thanks Steve.  
Just what was needed