# \#nnunet

**URL:** https://discourse.slicer.org/tag/nnunet/530.md

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## [nnUNet fails with ModuleNotFoundError: No module named 'torchvision.ops'](https://discourse.slicer.org/t/nnunet-fails-with-modulenotfounderror-no-module-named-torchvision-ops/46802)

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**Author:** [@aabrown100-git](https://discourse.slicer.org/u/aabrown100-git)\
**Replies:** 5\
**Last updated:** [May 11, 2026, 9:03pm UTC](https://discourse.slicer.org/t/nnunet-fails-with-modulenotfounderror-no-module-named-torchvision-ops/46802 "2026-05-11T21:03:11Z")

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Using nnUNet extension with custom weights fails with the following error output. Start \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* nnUNet is already installed (2.7.0) and compatible…

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## [Automatic segmentation of the ventricles (brain)](https://discourse.slicer.org/t/automatic-segmentation-of-the-ventricles-brain/45915)

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**Author:** [@Preetham\_Dange](https://discourse.slicer.org/u/Preetham_Dange)\
**Replies:** 7\
**Last updated:** [March 5, 2026, 8:11am UTC](https://discourse.slicer.org/t/automatic-segmentation-of-the-ventricles-brain/45915 "2026-03-05T08:11:07Z")

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Hello everyone, I am currently working on hydrocephalus . I wanted to automatically segment the ventricles (brain) and use the volume statistics for research purposes. I tried MONAI Auto3Dseg and nnUnet but I couldn’t f…

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## [nnUNET failed to load segmentation in DentalSegmentator & totalSegmentator](https://discourse.slicer.org/t/nnunet-failed-to-load-segmentation-in-dentalsegmentator-totalsegmentator/43374)

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**Author:** [@chz31](https://discourse.slicer.org/u/chz31)\
**Replies:** 6\
**Last updated:** [June 17, 2025, 6:41pm UTC](https://discourse.slicer.org/t/nnunet-failed-to-load-segmentation-in-dentalsegmentator-totalsegmentator/43374 "2025-06-17T18:41:00Z")

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I am using Ubuntu 22.04 and Slicer 5.9.0. The DentalSegmentator showed “failed to load segmentation; something is wrong with nnUnet processing” Here is the error log: \[DEBUG\]\[Qt\] 16.06.2025 15:08:12 \[\] (unknown:0) -…