# Problem using Segment editor

**URL:** <https://discourse.slicer.org/t/problem-using-segment-editor/21689>\
**Category:** Support\
**Created:** [January 29, 2022, 2:59pm UTC](https://discourse.slicer.org/t/problem-using-segment-editor/21689 "2022-01-29T14:59:38Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Keivan\_Ahmadi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/keivan_ahmadi/32/14042_2.png) [@Keivan\_Ahmadi](https://discourse.slicer.org/u/Keivan_Ahmadi)\
**Post date:** [January 29, 2022, 2:59pm UTC](https://discourse.slicer.org/t/problem-using-segment-editor/21689/1 "2022-01-29T14:59:38Z")

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Operating system: Windows 11  
Slicer version: 4.11

Dear all,

Currently, I have created a segmentation of the rat head model. I saved the following files of the segmentation for future modification.

 ![Screenshot 2022-01-29 133503](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/d/3dc6cd691f7a2e3742807f7a1043d805a87d07e1.png)

But after I load files again, I am not able to change anything. As you can see in the following screenshot I am not able to create any change in the previous segmentation

 ![Screenshot 2022-01-29 134202](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/9/e9388c420e7f57ec4fc185ea86c65c5c7f393034.jpeg)

I would appreciate that if someone have any idea regarding this issue. I just want to create some changes using the paint tools of the segment editor, then create a new mask.

Thank you in advance.

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [January 29, 2022, 3:26pm UTC](https://discourse.slicer.org/t/problem-using-segment-editor/21689/2 "2022-01-29T15:26:56Z")

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Go further down in the effect tab and check what you have got here:

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/8/f8393b889500908b78bae732ef3226b43c7ed6cd.png)

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<div class="post-metadata">

**Author:** ![Keivan\_Ahmadi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/keivan_ahmadi/32/14042_2.png) [@Keivan\_Ahmadi](https://discourse.slicer.org/u/Keivan_Ahmadi)\
**Post date:** [January 29, 2022, 3:53pm UTC](https://discourse.slicer.org/t/problem-using-segment-editor/21689/3 "2022-01-29T15:53:24Z")

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Dear Rudolf,

Thank you very much for the reply. I checked all options in there, but nothing changed. When I try to remove some part of segmentation with the help of paint tools in the segment editor nothing changes. It seems that my file is kind of uneditable. I wonder is there any way to change that. I have attached some files concerning this problem.

As an example, I have plan to remove the downer part of the green segment in the following slice with the help of paint

 ![Screenshot 2022-01-29 164328](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/2/42194f08beabe689703e20a586267bf5180f496c.jpeg)

After using the paint tool, I reach the following result (dark red part in the following screen)

 ![Screenshot 2022-01-29 164510](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/2/9202c394854794e72c6608d8848c11b853007e36.jpeg)

After I saved this change and reload the files, I did not see any change. I would like to modify the loading file, but it seems that it is not possible and I don’t know what is the problem.

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<div class="post-metadata">

**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [January 29, 2022, 8:00pm UTC](https://discourse.slicer.org/t/problem-using-segment-editor/21689/4 "2022-01-29T20:00:11Z")

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You can put one online for download (bundle them as MRB) and post the link here.