# Batch dental segmentator: No valid volume file found in the folder

**URL:** <https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633>\
**Category:** Support\
**Created:** [September 30, 2025, 12:01pm UTC](https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633 "2025-09-30T12:01:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Chanrury\_s](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chanrury_s/32/80895_2.png) [@Chanrury\_s](https://discourse.slicer.org/u/Chanrury_s)\
**Post date:** [September 30, 2025, 12:01pm UTC](https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633/1 "2025-09-30T12:01:01Z")

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Hello!  
I’m having problems with the “AutomatedDentalTools” extension.  
AutomatedDentalTools contains the “BatchDentalSegmentator” module.  
When I select a date folder, an error appears (No valid volume file found in the folder) when I click apply.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/a/5a62dfd869c38f16a91afe7ac5066cf415f40a22.png)

What could be causing this problem?  
Please tell me which file extensions this module can work with?  
Maybe I should change the file extension to something else?  
It seems very strange to me that the module, for some reason, can’t read regular .dcm files.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/0/e0d30f1bcc15c3aa4071ba7e03f63c2e3f168b31.png)

I think I should clarify. There’s a neural network called NNUnet. This neural network powers the DentalSegmentator. In Slicer3D, DentalSegmentator is available in two extensions: “DentalSegmentator” itself and DentalSegmentator as part of “AutomatedDentalTools”.

When working with another extension “DentalSegmentator” such problems do not arise. In this extension, data is loaded via “add DICOM data.” I can process the same DICOM files without any problems in this extension. This gives me reason to believe my DICOM files are fine. I have worked with them for a long time without any problems.

I wanted to test whether the same “dentalsegmentator,” but as part of “BatchDentalSeg” from the “AutomatedDentalTools” extension, could perform individual segmentation of each tooth. Here, you need to specify a folder to load the data, but the program apparently doesn’t see DICOM files in the folder.

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**Author:** ![mau\_igna\_06](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mau_igna_06/32/9056_2.png) [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Post date:** [October 1, 2025, 6:42pm UTC](https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633/2 "2025-10-01T18:42:24Z")

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Maybe try putting your DICOM files in a folder path that does not contain special characters such as those “russian” letters between `OneDrive` and `endodontics`

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**Author:** ![Chanrury\_s](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chanrury_s/32/80895_2.png) [@Chanrury\_s](https://discourse.slicer.org/u/Chanrury_s)\
**Post date:** [October 1, 2025, 8:28pm UTC](https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633/3 "2025-10-01T20:28:20Z")

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```auto

```

I already thought about this and tried changing the file locations. Now there are no Cyrillic characters, but the error still appears.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/7/07d19fded8023139572bc818d05163fa7951c0fe.png)

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<div class="post-metadata">

**Author:** ![mau\_igna\_06](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mau_igna_06/32/9056_2.png) [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Post date:** [October 1, 2025, 8:32pm UTC](https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633/4 "2025-10-01T20:32:29Z")

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Maybe you need to convert all your dicom studies to usual (`volume`) 3D image formats such as `.nrrd`, `.nii` or `.nii.gz` and not `.dcm` files

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**Author:** ![Chanrury\_s](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chanrury_s/32/80895_2.png) [@Chanrury\_s](https://discourse.slicer.org/u/Chanrury_s)\
**Post date:** [October 1, 2025, 8:47pm UTC](https://discourse.slicer.org/t/batch-dental-segmentator-no-valid-volume-file-found-in-the-folder/44633/5 "2025-10-01T20:47:23Z")

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Yes, it finally worked! Thank you very much! I ran the neural network calculation and I still have to wait for it to give me the results. I hope everything works out.

Thanks for telling me to try nii.gz - at least I was able to run the neural network. It looks like it really doesn’t accept the .dcm format.