Segmenting an image into homogenous compartments

Support
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Operating system: Ubuntu 22.04
Slicer version: 5.2.2
Hello All.
I have an MRI scan that I need to segment into N homogenous compartments for later reconstruction. The challenge here is that it’s not whatever organ, and the rest is background, but it has to be compartments.
Is there a way to do that with slicer?
UPDATE:
Here is a link to the file via google drive: https://drive.google.com/file/d/1zFCewDPTZrOlu_-3JxJOX0wXDwuqYPos/view?usp=share_link

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This is a follow-up on discussion on Segmenting an image into homogenous compartments - #4 by ZInoviy - Image Analysis - Image.sc Forum

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@Zinoviy_Weinstein You have shared a single slice. Do you need to do 2D image segmentation? What is the clinical goal?

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Yes. This is a 2D 1H anatomical image that needs to be segmented to use in later image reconstruction of “crappier” images.