2025.07.15 Weekly Meeting

[jcfr (Jean Christophe Fillion Robin (Kitware))]

Meeting Notes

Welcome New Attendees

• Timon Schnauffer (@TSatMGB)
• Sara Razzaq

CTK Updates

• It is considered sensible to:

  • Add Q_PROPERTY declarations with a NOTIFY signal where appropriate.
  • Ensure all classes that inherit from QObject explicitly include the Q_OBJECT macro.

clang-format Integration

• As part of enforcing automatic style formatting, comments were added to preserve alignment and wrapping:

  • // comments and clang-format off/on markers were used to exclude specific regions from formatting.

• Relevant commits:

  • 2d10f6bd0: STYLE: Add // comments to preserve wrapping before clang-format integration
  • a06c4eb35: STYLE: Use clang-format off/on to preserve alignment and readability

OpenSSL & macOS

• SampleData download is currently broken in Slicer 5.9 on macOS due to missing https support in urllib.
• Tracking issue: #8541

Mean Skull Thickness from CT

• Timon Schnauffer (@TSatMGB) joined to discuss the use of the BoneThicknessMapping extension.
• Related discussion: Mean Skull Thickness from CT

Use of Slicer for Aorta Segmentation in Clinical Setting

• Sara Razzaq (Tufts Medical Center) plans to use Slicer for pre- and post-operative aorta segmentation.

• Tufts IT requires a security risk assessment contact.

• We clarified:

  • As an open-source project, Slicer does not have a formal point of contact for security forms.

  • Suggested referencing:

    • Slicer security policy
    • Commercial use partners
    • OpenSSF Scorecard

Segment Editor Refactoring for Web Integration

• @Thibault_Pelletier reported progress on refactoring SegmentEditorEffect logic:

  • Shifting logic from Qt to VTK, enabling easier integration in Trame-based (web) applications.

nnInteractive and Slicer

• @pieper spoke with the nnInteractive team:

  • Current models include training data licensed under non-commercial Creative Commons, restricting their use in commercial settings.
  • The maintainers are open to retraining with unrestricted datasets, but there is currently insufficient data available.

Using nnInteractive to Refine TotalSegmentator Output

• @pieper tested whether nnInteractive can be used to refine rough or low-resolution TotalSegmentator segmentations.

• Feedback from Fabian Isensee (lead author of nnInteractive) was positive, though this use case hadn’t been formally tested.

• Results:

  • Left: Native TotalSegmentator output at 1.5mm resolution (from input with 3.75mm slice spacing).
  • Right: After upsampling the labelmap and refining using nnInteractive, improved results were obtained by selecting a segment and adding just one point.