# Convert image and segmentation to DICOM

**URL:** <https://discourse.slicer.org/t/convert-image-and-segmentation-to-dicom/543>\
**Category:** Support\
**Created:** [June 20, 2017, 7:20pm UTC](https://discourse.slicer.org/t/convert-image-and-segmentation-to-dicom/543 "2017-06-20T19:20:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [June 20, 2017, 8:02pm UTC](https://discourse.slicer.org/t/convert-image-and-segmentation-to-dicom/543/2 "2017-06-20T20:02:14Z")

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You are trying to convert nrrd files into a RT Structure Set using 3D Slicer? By coincidence, I documented this procedure earlier today.

1. Load all images. At time of load, click “Labelmap” checkbox for each structure
2. Go to Segmentation module
3. For “Active segmentation”, choose “Create new segmentation”
4. For each structure, repeat:  
4a) In “Export/Import segments”, choose structure, and import as labelmap
5. Click on one of the segments, and then click “Edit selected”
6. Set the “Master volume” to your CT
7. Go to Data module.
8. On background, right click choose “Create new subject”
9. On subject, right click choose “Create child study”
10. Drag the CT and segmentation node onto the child study
11. Right click on study, choose “Export to DICOM”
12. Enjoy your newly created DICOM-RT file

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