# Fractional anisotropy nrrd to dicom

**URL:** <https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352>\
**Category:** Support\
**Created:** [February 19, 2020, 6:23pm UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352 "2020-02-19T18:23:39Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![HariES](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/haries/32/6045_2.png) [@HariES](https://discourse.slicer.org/u/HariES)\
**Post date:** [February 19, 2020, 6:23pm UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/1 "2020-02-19T18:23:40Z")

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Dear Sir

I would like to export nrrd as dicom and save.  
I tried using dicom export, create dicom series and under data module.  
Nothing is worked properly. I may enter some information which I dont know.  
Kindly guide to get FA.nrrd into dicom

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**Author:** ![Juicy](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@Juicy](https://discourse.slicer.org/u/Juicy)\
**Post date:** [February 19, 2020, 9:29pm UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/2 "2020-02-19T21:29:25Z")

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Have you tried:

Drag and drop the nrrd file into slicer and load as a volume, then go to data module and right click on the volume and choose Export 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:** [February 20, 2020, 4:13am UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/3 "2020-02-20T04:13:58Z")

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@Juicy’s suggestion above should work well on recent Slicer Preview Releases.

Just one more thing to pay attention to before export: Since (until very recently) DICOM could only store integer values, you need to scale your fractional anisotropy volume from the original intensity range of [0, 1] to something that can be represented accurately enough as integers - for example [0,1000]. You can use Simple Filters module / ShiftScaleImageFilter with scale set to 1000.0.

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**Author:** ![HariES](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/haries/32/6045_2.png) [@HariES](https://discourse.slicer.org/u/HariES)\
**Post date:** [February 23, 2020, 5:17am UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/4 "2020-02-23T05:17:41Z")

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How to do drag and drop, I am getting no entry signal.  
If I export from data I am getting empty images.

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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:** [February 24, 2020, 3:39am UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/5 "2020-02-24T03:39:59Z")

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> [@HariES](#):
>
> How to do drag and drop

If you have trouble with drag-and-drop then you can use menu: File / Add data.

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**Author:** ![HariES](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/haries/32/6045_2.png) [@HariES](https://discourse.slicer.org/u/HariES)\
**Post date:** [February 24, 2020, 7:35am UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/6 "2020-02-24T07:35:19Z")

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Shiftscalefilter not accepting integer in while setting scaling. I set FA values (0, 10000) still it shows fractional value.

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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:** [February 25, 2020, 4:44am UTC](https://discourse.slicer.org/t/fractional-anisotropy-nrrd-to-dicom/10352/7 "2020-02-25T04:44:07Z")

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> [@HariES](#):
>
> Shiftscalefilter not accepting integer in while setting scaling

Scaling value can be integer or floating point, it does not matter. If you mean you would like to convert the image to integer type (I don’t think it is necessary for DICOM export) then you can use Cast Scalar Volume module.

> [@HariES](#):
>
> I set FA values (0, 10000) still it shows fractional value.

Where does it show that? Note that usually processing result is saved into a new volume, the original one should still be fractional.