# Segmentation in CT images

**URL:** <https://discourse.slicer.org/t/segmentation-in-ct-images/2101>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [February 16, 2018, 5:34pm UTC](https://discourse.slicer.org/t/segmentation-in-ct-images/2101 "2018-02-16T17:34:28Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![afsanehlahooti](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/afsanehlahooti/32/1212_2.png) [@afsanehlahooti](https://discourse.slicer.org/u/afsanehlahooti)\
**Post date:** [February 16, 2018, 5:34pm UTC](https://discourse.slicer.org/t/segmentation-in-ct-images/2101/1 "2018-02-16T17:34:28Z")

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Hi guys,  
I want to segment the tumor in CT images from head and neck cancers. Do you know what the best module in 3DSlicer 4.8 is? (I am not a radiologist.)  
Thanks a lot.

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**Author:** ![gcsharp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/gcsharp/32/863_2.png) [@gcsharp](https://discourse.slicer.org/u/gcsharp)\
**Post date:** [February 16, 2018, 5:59pm UTC](https://discourse.slicer.org/t/segmentation-in-ct-images/2101/2 "2018-02-16T17:59:25Z")

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Head and neck cancer is a heterogenous group of diseases which vary in location and presentation. Manual contouring using the segmentation editor will probably be best.

Since you mention you are not a radiologist, do you mean that you are not confident in identifying the tumor? It may help if you explain your project goal.

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**Author:** ![afsanehlahooti](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/afsanehlahooti/32/1212_2.png) [@afsanehlahooti](https://discourse.slicer.org/u/afsanehlahooti)\
**Post date:** [February 16, 2018, 6:02pm UTC](https://discourse.slicer.org/t/segmentation-in-ct-images/2101/3 "2018-02-16T18:02:42Z")

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Yes, I am not confident in identifying the tumor. I want to extract some radiomics features in Head and neck cancer pre and post-treatment.

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**Author:** ![gcsharp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/gcsharp/32/863_2.png) [@gcsharp](https://discourse.slicer.org/u/gcsharp)\
**Post date:** [February 16, 2018, 8:24pm UTC](https://discourse.slicer.org/t/segmentation-in-ct-images/2101/4 "2018-02-16T20:24:36Z")

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In that case, I suggest you ask an expert to perform the segmentation. Automatic delineation of H&N tumors in CT is beyond the current state of the art.

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**Author:** ![timeanddoctor](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/timeanddoctor/32/5839_2.png) [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Post date:** [February 18, 2018, 3:31am UTC](https://discourse.slicer.org/t/segmentation-in-ct-images/2101/5 "2018-02-18T03:31:43Z")

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A CTA of neck tumor may be help for you to segment the ROI through the module “segment”.  
I caculated the volume of a “cancerous goiter” from CTA, which is interesting to measure the I131 for a patient.