# Position of the 3D image and its cross section do not match

**URL:** <https://discourse.slicer.org/t/position-of-the-3d-image-and-its-cross-section-do-not-match/39775>\
**Category:** Support\
**Created:** [October 21, 2024, 1:50pm UTC](https://discourse.slicer.org/t/position-of-the-3d-image-and-its-cross-section-do-not-match/39775 "2024-10-21T13:50:25Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![Haru](https://avatars.discourse-cdn.com/v4/letter/h/ecc23a/32.png) [@Haru](https://discourse.slicer.org/u/Haru)\
**Post date:** [October 31, 2024, 12:11pm UTC](https://discourse.slicer.org/t/position-of-the-3d-image-and-its-cross-section-do-not-match/39775/21 "2024-10-31T12:11:01Z")

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The imaging conditions for an X-ray CT were 779 slices. When this data was converted to a DICOM file, it was saved in each of the XY, YZ, and ZX axes, because I mistakenly thought that data for each axis was needed to restore the 3D image.  
At that time, I think only the files for the YZ and ZX axes were changed to 1024 pieces. I do not know why.  
I want to count the number of bulkheads and examine the structure of the object, which is displayed on the slice surface.  
I would like to use XY data. Thank you for your instruction.

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [October 31, 2024, 12:31pm UTC](https://discourse.slicer.org/t/position-of-the-3d-image-and-its-cross-section-do-not-match/39775/22 "2024-10-31T12:31:33Z")

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> [@Haru](#):
>
> YZ and ZX axes were changed to 1024 pieces. I do not know why.

Just a different permutation of the axes. Probably those acquisitions are not necessary at all.

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<div class="post-metadata">

**Author:** ![Haru](https://avatars.discourse-cdn.com/v4/letter/h/ecc23a/32.png) [@Haru](https://discourse.slicer.org/u/Haru)\
**Post date:** [October 31, 2024, 1:07pm UTC](https://discourse.slicer.org/t/position-of-the-3d-image-and-its-cross-section-do-not-match/39775/23 "2024-10-31T13:07:23Z")

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I learned a lot.  
Thank you so much!

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