# Input needed in DWI QC

**URL:** <https://discourse.slicer.org/t/input-needed-in-dwi-qc/25815>\
**Category:** Support\
**Created:** [October 20, 2022, 8:40pm UTC](https://discourse.slicer.org/t/input-needed-in-dwi-qc/25815 "2022-10-20T20:40:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ecgt](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ecgt/32/17012_2.png) [@ecgt](https://discourse.slicer.org/u/ecgt)\
**Post date:** [October 20, 2022, 8:40pm UTC](https://discourse.slicer.org/t/input-needed-in-dwi-qc/25815/1 "2022-10-20T20:40:58Z")

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I try using Diffusion–\>Process–\>GraQC  
Input volume I upload the nrrd file but I don’t know about the input volume mask  
If I check create the mask gives an error  
What do I have to upload in Input volume mask and how do thet volume

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**Author:** ![ebrahim](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ebrahim/32/13403_2.png) [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Post date:** [October 21, 2022, 6:00pm UTC](https://discourse.slicer.org/t/input-needed-in-dwi-qc/25815/2 "2022-10-21T18:00:30Z")

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> [@ecgt](#):
>
> I try using Diffusion–\>Process–\>GraQC

What extension comes with the GraQC module? I might be able to take a look.

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<div class="post-metadata">

**Author:** ![ecgt](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ecgt/32/17012_2.png) [@ecgt](https://discourse.slicer.org/u/ecgt)\
**Post date:** [October 21, 2022, 10:56pm UTC](https://discourse.slicer.org/t/input-needed-in-dwi-qc/25815/3 "2022-10-21T22:56:44Z")

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Input volume should be .nrrd  
Then input mask I don’t know. This is my problem.

 ![errors](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/8/d81d2da7952bb3b442dcb5f5001ca227e00be9c4.jpeg)  
What kind of mask is it requesting?