# Displaying Brain Aneurysm in 3D from Mask

**URL:** <https://discourse.slicer.org/t/displaying-brain-aneurysm-in-3d-from-mask/31496>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [September 1, 2023, 2:37am UTC](https://discourse.slicer.org/t/displaying-brain-aneurysm-in-3d-from-mask/31496 "2023-09-01T02:37:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Vineet\_Saravanan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/vineet_saravanan/32/67136_2.png) [@Vineet\_Saravanan](https://discourse.slicer.org/u/Vineet_Saravanan)\
**Post date:** [September 1, 2023, 2:37am UTC](https://discourse.slicer.org/t/displaying-brain-aneurysm-in-3d-from-mask/31496/1 "2023-09-01T02:37:51Z")

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Hello, I have some aneurysm masks I want to visualize in 3D. I have imported them into the 3D slicer and first tried to use the thresholding tool, but I only see green when the threshold is less than 1, and then the whole screen is green/selected. If I increase it just a bit, nothing is green, not even the aneurysm. I can manually select the aneurysm using the paint tool, but that doesn’t seem accurate around the aneurysm due to pixel size.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/6/5647dea8bb556a99712fe6f99ce9ab075fa7d83a.png)

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**Author:** ![Vineet\_Saravanan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/vineet_saravanan/32/67136_2.png) [@Vineet\_Saravanan](https://discourse.slicer.org/u/Vineet_Saravanan)\
**Post date:** [September 3, 2023, 6:27pm UTC](https://discourse.slicer.org/t/displaying-brain-aneurysm-in-3d-from-mask/31496/2 "2023-09-03T18:27:33Z")

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Does the threshold not work for something like this?

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [September 3, 2023, 7:55pm UTC](https://discourse.slicer.org/t/displaying-brain-aneurysm-in-3d-from-mask/31496/3 "2023-09-03T19:55:48Z")

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It may not work well if your scalar range is very small. Maybe if you post some example data someone can give you advice.