# Inaccurate drawing on registered MRI

**URL:** https://discourse.slicer.org/t/inaccurate-drawing-on-registered-mri/16286
**Category:** Support
**Tags:** registration, segmentation
**Created:** [March 1, 2021, 12:17pm UTC](https://discourse.slicer.org/t/inaccurate-drawing-on-registered-mri/16286 "2021-03-01T12:17:04Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![mohammed\_alshakhas](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mohammed_alshakhas/32/10025_2.png) [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)
#### Post date: [March 1, 2021, 12:17pm UTC](https://discourse.slicer.org/t/inaccurate-drawing-on-registered-mri/16286/1 "2021-03-01T12:17:04Z")

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im trying to segment a register axial MRI using BRAIN

im using drawing too but the result is pixelated with inaccurate borders

is there a way to improve it ?

thanks

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### Author: ![mohammed\_alshakhas](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mohammed_alshakhas/32/10025_2.png) [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)
#### Post date: [March 1, 2021, 12:40pm UTC](https://discourse.slicer.org/t/inaccurate-drawing-on-registered-mri/16286/2 "2021-03-01T12:40:25Z")

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![Screen Shot 2021-03-01 at 15.13.26](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/b/e/be4514ca14bfc439fae647eecf2fe440156861f4.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: [March 1, 2021, 1:51pm UTC](https://discourse.slicer.org/t/inaccurate-drawing-on-registered-mri/16286/3 "2021-03-01T13:51:38Z")

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You can choose to segment at arbitrarily high resolution. See more information [here](https://slicer.readthedocs.io/en/latest/user_guide/modules/segmenteditor.html#segmentation-is-not-accurate-enough).