# How to control the size of control points in ROI

**URL:** <https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839>\
**Category:** Feature requests\
**Created:** [May 28, 2021, 1:23pm UTC](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839 "2021-05-28T13:23:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![full\_stack\_master](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/full_stack_master/32/9693_2.png) [@full\_stack\_master](https://discourse.slicer.org/u/full_stack_master)\
**Post date:** [May 28, 2021, 1:23pm UTC](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839/1 "2021-05-28T13:23:28Z")

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I need to change the control points size in ROI

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/b/9beaaf031b04848d803b29affa17daa2e68874e3.jpeg)  
Where and How can I control this size

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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 28, 2021, 9:38pm UTC](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839/2 "2021-05-28T21:38:39Z")

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You cannot modify Annotation ROI control point sizes. However, in recent Slicer Preview Releases you can create markups ROIs and use that for cropping volumes. Markups ROIs have adjustable control points size and other advantages (e.g., they can be rotated).

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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, 2023, 2:33am UTC](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839/3 "2023-03-21T02:33:44Z")

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Control point sizes can be modified in ROI markups, which replaced ROI annotations.

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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, 2023, 2:33am UTC](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839/4 "2023-03-21T02:33:50Z")

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Closed on March 21, 2023, 2:33am UTC