# Errors Importing CT files made with GE LightSpeed QXI 4

**URL:** <https://discourse.slicer.org/t/errors-importing-ct-files-made-with-ge-lightspeed-qxi-4/10769>\
**Category:** Support\
**Created:** [March 21, 2020, 3:23am UTC](https://discourse.slicer.org/t/errors-importing-ct-files-made-with-ge-lightspeed-qxi-4/10769 "2020-03-21T03:23:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![FaceMaker](https://avatars.discourse-cdn.com/v4/letter/f/c77e96/32.png) [@FaceMaker](https://discourse.slicer.org/u/FaceMaker)\
**Post date:** [March 21, 2020, 3:23am UTC](https://discourse.slicer.org/t/errors-importing-ct-files-made-with-ge-lightspeed-qxi-4/10769/1 "2020-03-21T03:23:18Z")

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Hello, I have been trying to import dicom files from ct-scan made with GE LightSpeed QXI 4. I have researched the tutorials and information and researched the GE LightSpeed QXI 4. The errors that occur are errors in spacing, geometry. I get images that either look like aliens or like flattened heads. None of the solutions I found work for me. I downloaded the recommended extensions and it didn’t work, looked at the information in the Volumes module, etc.

This is an old ct-scan machine so I’m hoping someone already knows what to do to get a 3d object without distortions.

Is there a way to manually insert a space size for each slice?

I also found this formula for GE’s Lightspeed 64:  
64 x 0.625 mm (total z-axis length of 40 mm).

Would it be 4 x 0.625mm for GE LightSpeed QXI 4?

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**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:** [March 21, 2020, 1:53pm UTC](https://discourse.slicer.org/t/errors-importing-ct-files-made-with-ge-lightspeed-qxi-4/10769/2 "2020-03-21T13:53:05Z")

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See troubleshooting instructions in the [DICOM FAQ](https://www.slicer.org/wiki/Documentation/Nightly/FAQ/DICOM). Let us know how they worked or send us anonymized/animal/phantom data set that we can inspect.

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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:** [March 21, 2020, 2:20pm UTC](https://discourse.slicer.org/t/errors-importing-ct-files-made-with-ge-lightspeed-qxi-4/10769/3 "2020-03-21T14:20:11Z")

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Also if you use a recent slicer you can enable acquisition geometry correction (to handle variable slice spacing). It’s in Edit -\> Application Settings -\> DICOM tab.

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<div class="post-metadata">

**Author:** ![FaceMaker](https://avatars.discourse-cdn.com/v4/letter/f/c77e96/32.png) [@FaceMaker](https://discourse.slicer.org/u/FaceMaker)\
**Post date:** [March 21, 2020, 4:45pm UTC](https://discourse.slicer.org/t/errors-importing-ct-files-made-with-ge-lightspeed-qxi-4/10769/4 "2020-03-21T16:45:48Z")

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I did try this, it still looked distorted. Will go through all the tutorials again. Thank you for your help.