# Segementing mri doesnt do continous layer

**URL:** <https://discourse.slicer.org/t/segementing-mri-doesnt-do-continous-layer/46868>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [April 29, 2026, 3:03pm UTC](https://discourse.slicer.org/t/segementing-mri-doesnt-do-continous-layer/46868 "2026-04-29T15:03:09Z")\
**Posts on this page:** 2\
**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:** [April 29, 2026, 3:03pm UTC](https://discourse.slicer.org/t/segementing-mri-doesnt-do-continous-layer/46868/1 "2026-04-29T15:03:10Z")

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im experimenting with mri segmentation . sometimes it works fine but started to get this error more often . when i draw or pain i get some area segmented some are not .

 ![Screenshot 2026-04-29 at 18.02.46](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/6/4627ce22c75e2eb8d5a2253c02ffefb0f98be7e1.jpeg)

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**Author:** ![mikebind](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Post date:** [April 29, 2026, 8:57pm UTC](https://discourse.slicer.org/t/segementing-mri-doesnt-do-continous-layer/46868/2 "2026-04-29T20:57:49Z")

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I wonder if your segmentation geometry has very large voxels, and your slice view is grazing these from an oblique angle. Something like the second figure at this link: [https://lassoan.github.io/SlicerSegmentationRecipes/ObliqueSliceSegmentation/](https://lassoan.github.io/SlicerSegmentationRecipes/ObliqueSliceSegmentation/)