# Add a type of two points for creating a plane

**URL:** <https://discourse.slicer.org/t/add-a-type-of-two-points-for-creating-a-plane/29726>\
**Category:** Feature requests\
**Created:** [May 30, 2023, 2:21pm UTC](https://discourse.slicer.org/t/add-a-type-of-two-points-for-creating-a-plane/29726 "2023-05-30T14:21:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![slicer365](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/slicer365/32/67549_2.png) [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Post date:** [May 30, 2023, 2:21pm UTC](https://discourse.slicer.org/t/add-a-type-of-two-points-for-creating-a-plane/29726/1 "2023-05-30T14:21:40Z")

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It is useful to generate a midplane perpendicular to the line connecting two points. Especially for neurosurgeons.

Users only need to place two points to get the mirror plane of these two points

 ![1685456237720](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/5/a50e736863161a57b59480dadf1cff58f038b73f.jpeg)

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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:** [May 30, 2023, 7:59pm UTC](https://discourse.slicer.org/t/add-a-type-of-two-points-for-creating-a-plane/29726/2 "2023-05-30T19:59:03Z")

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Instead of changing slice orientation, it is more common in neuroimaging to transform the image into a standard coordinate system that is aligned with axes of the brain.

You can do this in Slicer for example by using ACPC transform module. It aligns the brain in a standard orientation based on the AC-PC line and points in the midsagittal plane.