# Extend ROI after cropping and segmenting

**URL:** <https://discourse.slicer.org/t/extend-roi-after-cropping-and-segmenting/6594>\
**Category:** Support\
**Created:** [April 24, 2019, 8:32pm UTC](https://discourse.slicer.org/t/extend-roi-after-cropping-and-segmenting/6594 "2019-04-24T20:32:46Z")\
**Posts on this page:** 1\
**Showing post:** 3

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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:** [April 25, 2019, 3:59pm UTC](https://discourse.slicer.org/t/extend-roi-after-cropping-and-segmenting/6594/3 "2019-04-25T15:59:32Z")

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> [@ED1](#):
>
> Is there a feature that allows the cropped ROI to be altered, specifically increased?

You can draw an Annotation ROI and set the region where you want to edit your segmentation:

- Click down-arrow on the Place button on the toolbar, select ROI, click in the image, adjust the ROI size
- Go to Segment Editor, click “Specify geometry” button (next to Master volume selector)
- Choose the ROI node as source geometry, set spacing values, click OK

This method may require less steps than what @muratmaga suggested above but has the disadvantage that the spacing and origin values of the segmentation will not match exactly the master volume’s (that you might find confusing).

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_[View the full topic](https://discourse.slicer.org/t/extend-roi-after-cropping-and-segmenting/6594)._