# About CT slices

**URL:** <https://discourse.slicer.org/t/about-ct-slices/23236>\
**Category:** Community\
**Tags:** dicom\
**Created:** [May 2, 2022, 12:31pm UTC](https://discourse.slicer.org/t/about-ct-slices/23236 "2022-05-02T12:31:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zhiyuan](https://avatars.discourse-cdn.com/v4/letter/z/a87d85/32.png) [@zhiyuan](https://discourse.slicer.org/u/zhiyuan)\
**Post date:** [May 2, 2022, 12:31pm UTC](https://discourse.slicer.org/t/about-ct-slices/23236/1 "2022-05-02T12:31:20Z")

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I have a question, that is, medical CT images are slice images, and the shooting interval is uncertain. How does slicer software fit these slice images into three-dimensional models, and there will be an interval between slices

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**Author:** ![mau\_igna\_06](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mau_igna_06/32/9056_2.png) [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Post date:** [May 2, 2022, 2:21pm UTC](https://discourse.slicer.org/t/about-ct-slices/23236/2 "2022-05-02T14:21:45Z")

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The distance between slices is usually a DICOM parameter so should be there

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**Author:** ![zhiyuan](https://avatars.discourse-cdn.com/v4/letter/z/a87d85/32.png) [@zhiyuan](https://discourse.slicer.org/u/zhiyuan)\
**Post date:** [May 2, 2022, 2:23pm UTC](https://discourse.slicer.org/t/about-ct-slices/23236/3 "2022-05-02T14:23:42Z")

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Yes, I know that the distance between slices is a parameter, which is saved in the NII file. However, this is only the shooting interval of labeled slices. However, there is no image capture data for the distance between intervals. How do we show the images at this interval