# Export NRRD image to DICOM

**URL:** <https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946>\
**Category:** Support\
**Created:** [August 25, 2017, 8:28am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946 "2017-08-25T08:28:53Z")\
**Posts on this page:** 11\
**Page:** 1

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**Author:** ![george1](https://avatars.discourse-cdn.com/v4/letter/g/9e8a1a/32.png) [@george1](https://discourse.slicer.org/u/george1)\
**Post date:** [August 25, 2017, 8:28am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/1 "2017-08-25T08:28:53Z")

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The problem is that my files are in the “.nrrd” format and I cannot open them with DICOM browser. Could I convert them from NRRD to DICOM?

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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:** [August 25, 2017, 11:38am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/2 "2017-08-25T11:38:16Z")

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You can use DICOM module’s export feature: [https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM#DICOM\_export](https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM#DICOM_export). Use the latest nightly version of Slicer.

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**Author:** ![pwang](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@pwang](https://discourse.slicer.org/u/pwang)\
**Post date:** [August 25, 2017, 1:52pm UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/3 "2017-08-25T13:52:56Z")

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That one doesn’t work. Create a DICOM Series works!

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**Author:** ![pwang](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@pwang](https://discourse.slicer.org/u/pwang)\
**Post date:** [August 25, 2017, 1:53pm UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/4 "2017-08-25T13:53:44Z")

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Try Create a DICOM Series in the nightly built version

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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:** [August 25, 2017, 2:06pm UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/5 "2017-08-25T14:06:40Z")

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> [@pwang](#):
>
> That one doesn’t work.

Can you be a bit more specific? What version did you try that did not work? What did you do, what did you expect to happen, and what happened?

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**Author:** ![pwang](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@pwang](https://discourse.slicer.org/u/pwang)\
**Post date:** [August 25, 2017, 3:41pm UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/6 "2017-08-25T15:41:19Z")

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Nightly built 4.7.0 for Windows.  
My steps: 1. Create a project, 2. Drag the nrrd file under the project, 3.  
export to DICOM, 4. error meesage: ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/6/3609d131532f78ad8caa4db8fbb2518c2e8d0853.png)

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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:** [August 25, 2017, 4:35pm UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/7 "2017-08-25T16:35:27Z")

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Thanks for the feedback. The instructions did not explain that you need to add a parent subject and study to your node before you can export it. I’ve added instructions to the wiki page. Please try it and let us know if the export works if you follow these steps: [https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM#DICOM\_export](https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM#DICOM_export)

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**Author:** ![pwang](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@pwang](https://discourse.slicer.org/u/pwang)\
**Post date:** [August 28, 2017, 1:34am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/8 "2017-08-28T01:34:11Z")

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It works. Thanks a lot.

But it doesn’t work on the version of MAC.

BTW, how I can change the Cost Function Convergence Factor, seen below? [image:  
Inline image 1]

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/7/87aaf10b7a28fdbd3b10a963462437e2e3701430.png)

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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:** [August 28, 2017, 2:26am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/9 "2017-08-28T02:26:43Z")

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> [@pwang](#):
>
> It works. Thanks a lot.
> 
> But it doesn’t work on the version of MAC.

What is working?  
What is not working on Mac?

> [@pwang](#):
>
> BTW, how I can change the Cost Function Convergence Factor, seen below? [image:  
> Inline image 1]

This topic is about DICOM export. If the question is not about DICOM export then please post in a new topic. Add essential information, such as what module you are using and what you are trying to achieve.

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**Author:** ![Yuri\_Disaro\_Amado](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yuri_disaro_amado/32/7325_2.png) [@Yuri\_Disaro\_Amado](https://discourse.slicer.org/u/Yuri_Disaro_Amado)\
**Post date:** [July 2, 2020, 5:58am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/10 "2020-07-02T05:58:11Z")

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I have been trying with no success to go through the described method and convert nrrd files from [https://www.embodi3d.com/](https://www.embodi3d.com/) into dicom. Notably, the field “Input volume” only shows "Rename… " and “delete current node” as options, which can’t even be selected. Does that already explain what I could be doing wrong? I’m using Slicer 4.10.2 r28257

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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:** [July 6, 2020, 3:07am UTC](https://discourse.slicer.org/t/export-nrrd-image-to-dicom/946/11 "2020-07-06T03:07:26Z")

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> [@Yuri\_Disaro\_Amado](#):
>
> the field “Input volume” only shows "Rename… " and “delete current node” as options, which can’t even be selected.

In what part of which module? Can you post a screenshot?

Do you want to export a segmentation or a CT/MRI image?

What Slicer version are you using? Please try with the latest Slicer Preview Release.