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Does nnU-Net support instance segmentation?

questionUser asking for help or guidanceUser asking for help or guidance

Status: Open.

#3032 In MIC-DKFZ/nnUNet;

· adamtupper opened on Apr 30, 2026

Dice decreases during training with Primus

questionUser asking for help or guidanceUser asking for help or guidance

Status: Open.

#3029 In MIC-DKFZ/nnUNet;

· slee-prenuvo opened on Apr 28, 2026

Banding issue on some inference cases

Status: Open.

#3028 In MIC-DKFZ/nnUNet;

· EmergentBehaviour opened on Apr 27, 2026

[Feature request] Improve support for custom trainers (to no longer require forking/modifying nnunetv2)

enhancementImprovement to existing functionalityImprovement to existing functionality

needs-maintainerRequires maintainer attentionRequires maintainer attention

Status: Open.

#3025 In MIC-DKFZ/nnUNet;

· joshuacwnewton opened on Apr 22, 2026

[Security] Request for a security reporting policy

enhancementImprovement to existing functionalityImprovement to existing functionality

needs-maintainerRequires maintainer attentionRequires maintainer attention

Status: Open.

#3024 In MIC-DKFZ/nnUNet;

· ShenaoW opened on Apr 21, 2026

[Feature Request] Optional Visualization / Debug Mode for Preprocessing and Training.

feature requestNew functionality requestNew functionality request

Status: Open.

#3023 In MIC-DKFZ/nnUNet;

· VAIDEHI-28 opened on Apr 20, 2026

MedNeXt-v2 Resources

questionUser asking for help or guidanceUser asking for help or guidance

Status: Open.

#3022 In MIC-DKFZ/nnUNet;

· shahdhardn opened on Apr 20, 2026

Advice on training strategy: Large dataset (>6000 images),

questionUser asking for help or guidanceUser asking for help or guidance

Status: Open.

#3010 In MIC-DKFZ/nnUNet;

· valdemarbang opened on Apr 2, 2026

Question: mirroring feet data as input for nnUNet

Status: Open.

#3004 In MIC-DKFZ/nnUNet;

· luuknoordam opened on Mar 19, 2026

Error during preprocessing with latest version (2.6.4), fixed by downgrading

Status: Open.

#3003 In MIC-DKFZ/nnUNet;

· garance-thv opened on Mar 18, 2026

Clarification regarding community contributions and pending PRs

Status: Open.

#2997 In MIC-DKFZ/nnUNet;

· Borda opened on Mar 8, 2026

Question on left–right ambiguity in nnU-Net for small symmetric structures (pituitary region)

questionUser asking for help or guidanceUser asking for help or guidance

Status: Open.

#2989 In MIC-DKFZ/nnUNet;

· mubeeyax opened on Feb 12, 2026