# Cross Sectional Area of a Ring

**URL:** <https://discourse.slicer.org/t/cross-sectional-area-of-a-ring/1015>\
**Category:** Support\
**Created:** [September 6, 2017, 5:54pm UTC](https://discourse.slicer.org/t/cross-sectional-area-of-a-ring/1015 "2017-09-06T17:54:45Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**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:** [September 6, 2017, 11:41pm UTC](https://discourse.slicer.org/t/cross-sectional-area-of-a-ring/1015/2 "2017-09-06T23:41:48Z")

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You can define a curved path and reslice the image along that path as shown in this video:

Once you have the slice views in correct orientation, you can use the ruler tool (available in the toolbar) to measure diameter.

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_[View the full topic](https://discourse.slicer.org/t/cross-sectional-area-of-a-ring/1015)._