# Problems in use .nrrd format from 3d slicer in python.

**URL:** <https://discourse.slicer.org/t/problems-in-use-nrrd-format-from-3d-slicer-in-python/9449>\
**Category:** Support\
**Created:** [December 9, 2019, 5:13pm UTC](https://discourse.slicer.org/t/problems-in-use-nrrd-format-from-3d-slicer-in-python/9449 "2019-12-09T17:13:40Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [December 9, 2019, 5:41pm UTC](https://discourse.slicer.org/t/problems-in-use-nrrd-format-from-3d-slicer-in-python/9449/2 "2019-12-09T17:41:34Z")

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This is normal - Slicer shows patient coordinates and it looks like your images are slightly rotated with respect to patient.

[https://www.slicer.org/wiki/Coordinate\_systems](https://www.slicer.org/wiki/Coordinate_systems)

You can change this in slicer with the button labelled 4 in [this image](https://discourse.slicer.org/t/read-prostate-mr-image-failed/3423/2).

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