# Help with pulmonary artery segmentation in pulmonary angiograms

**URL:** <https://discourse.slicer.org/t/help-with-pulmonary-artery-segmentation-in-pulmonary-angiograms/32405>\
**Category:** Support\
**Created:** [October 25, 2023, 1:10am UTC](https://discourse.slicer.org/t/help-with-pulmonary-artery-segmentation-in-pulmonary-angiograms/32405 "2023-10-25T01:10:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mr29](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@mr29](https://discourse.slicer.org/u/mr29)\
**Post date:** [October 25, 2023, 1:10am UTC](https://discourse.slicer.org/t/help-with-pulmonary-artery-segmentation-in-pulmonary-angiograms/32405/1 "2023-10-25T01:10:04Z")

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Hello everyone,

I’m looking for guidance on segmenting pulmonary arteries in pulmonary angiograms before and after pulmonary embolism. I want to compare their surface area, but I’m unsure how to approach this in a 2D context. Can anyone guide me on how to accurately calculate the surface area of these arteries in a 2D context?

Any advice or resources you can offer would be greatly appreciated.

Thank you for your help.

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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:** [October 26, 2023, 5:27am UTC](https://discourse.slicer.org/t/help-with-pulmonary-artery-segmentation-in-pulmonary-angiograms/32405/2 "2023-10-26T05:27:26Z")

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Some thoughts that Perplexity provides:

[https://www.perplexity.ai/search/Help-with-pulmonary-GDiRBcKKRgC5EmrNz2xr4A?s=c](https://www.perplexity.ai/search/Help-with-pulmonary-GDiRBcKKRgC5EmrNz2xr4A?s=c)

Maybe you need to clarify what you want to achieve and what your radiological material represents.