# Body composition

**URL:** <https://discourse.slicer.org/t/body-composition/36467>\
**Category:** Support\
**Tags:** segmentation, segmentations, segment-editor\
**Created:** [May 29, 2024, 1:52pm UTC](https://discourse.slicer.org/t/body-composition/36467 "2024-05-29T13:52:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Kennyb0yy](https://avatars.discourse-cdn.com/v4/letter/k/ccd318/32.png) [@Kennyb0yy](https://discourse.slicer.org/u/Kennyb0yy)\
**Post date:** [May 29, 2024, 1:52pm UTC](https://discourse.slicer.org/t/body-composition/36467/1 "2024-05-29T13:52:53Z")

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Hello everyone,

I am trying to segment multiple structures in an abdominal ct. There are 5 structures that I would like marked individually: Psoas muscle, Other skeletal muscle, Subcutaeous fat, intramuscular fat and visceral fat.

I’m fairly new to the app and I’m having a hard time figuring out the fastest and most efficient way to do it.

any suggestions? is there an established extension that can do it?

Thanks

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<div class="post-metadata">

**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:** [May 29, 2024, 1:59pm UTC](https://discourse.slicer.org/t/body-composition/36467/2 "2024-05-29T13:59:19Z")

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You can segment muscles on CT using TotalSegmentator or MONAIAuto3DSeg extension. You can combine the segments with thresholding to obtain intramuscular fat.