# How to measure area of visceral and subcutaneous visceral fat on a single CT image (L3 level)?

**URL:** <https://discourse.slicer.org/t/how-to-measure-area-of-visceral-and-subcutaneous-visceral-fat-on-a-single-ct-image-l3-level/47262>\
**Category:** Support\
**Created:** [June 6, 2026, 9:29pm UTC](https://discourse.slicer.org/t/how-to-measure-area-of-visceral-and-subcutaneous-visceral-fat-on-a-single-ct-image-l3-level/47262 "2026-06-06T21:29:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Alexandre\_Bezerra](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alexandre_bezerra/32/79701_2.png) [@Alexandre\_Bezerra](https://discourse.slicer.org/u/Alexandre_Bezerra)\
**Post date:** [June 6, 2026, 9:29pm UTC](https://discourse.slicer.org/t/how-to-measure-area-of-visceral-and-subcutaneous-visceral-fat-on-a-single-ct-image-l3-level/47262/1 "2026-06-06T21:29:49Z")

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Hello! is there an automatic or simple way to measure the area visceral and subcutaneous fat on a single CT slice? I am able to calculate the volume of fat on all slices of an exam, but can´t seem to find a way to select a single slice and have the area of visceral or subcutaneous fat. Can anyone help? AS done in this research paper: [https://www.researchgate.net/journal/Journal-of-Clinical-Medicine-JCM-2077-0383/publication/394765900\_Opportunistic\_Detection\_of\_Chronic\_Kidney\_Disease\_Using\_CT-Based\_Measurements\_of\_Kidney\_Volume\_and\_Perirenal\_Fat/links/68afa9d16327cf7b63d9d271/Opportunistic-Detection-of-Chronic-Kidney-Disease-Using-CT-Based-Measurements-of-Kidney-Volume-and-Perirenal-Fat.pdf?\_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6Il9kaXJlY3QiLCJwYWdlIjoicHVibGljYXRpb25Eb3dubG9hZCIsInByZXZpb3VzUGFnZSI6InB1YmxpY2F0aW9uIn19](https://www.researchgate.net/journal/Journal-of-Clinical-Medicine-JCM-2077-0383/publication/394765900_Opportunistic_Detection_of_Chronic_Kidney_Disease_Using_CT-Based_Measurements_of_Kidney_Volume_and_Perirenal_Fat/links/68afa9d16327cf7b63d9d271/Opportunistic-Detection-of-Chronic-Kidney-Disease-Using-CT-Based-Measurements-of-Kidney-Volume-and-Perirenal-Fat.pdf?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6Il9kaXJlY3QiLCJwYWdlIjoicHVibGljYXRpb25Eb3dubG9hZCIsInByZXZpb3VzUGFnZSI6InB1YmxpY2F0aW9uIn19)

If a simple step-by-step how-to can be given I would appreciate.

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**Author:** ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Post date:** [June 7, 2026, 12:00pm UTC](https://discourse.slicer.org/t/how-to-measure-area-of-visceral-and-subcutaneous-visceral-fat-on-a-single-ct-image-l3-level/47262/2 "2026-06-07T12:00:15Z")

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You may refer to [this post](https://discourse.slicer.org/t/spatial-information-in-2d-segmentations/46642/3) for many options pertaining to surface area measurement.