AAPM 2013

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Proton dose calculation.
Deformable registration with landmark constraints.
Vector field visualization.

3D Slicer, is a free, open source software package for visualization and image analysis. 3D Slicer is natively designed to be available on multiple platforms, including Windows, Linux and Mac OS X.

The goal of the user group meeting is to bring together current and prospective 3D Slicer users and developers to discuss of 3D Slicer's present and future as a software application for therapy and imaging.


  • Date: Monday, August 5, 2013
  • Time: 12:30PM-2:00PM
  • Location: JW Marriott, Room 304 Third Floor


  • Gregory Sharp, Nadya Shusharina, Justin Phillips, MGH


  • 12:45-1:00 Presentation: "3D Slicer version 4.2 -> 4.3", Greg Sharp
  • 1:00-1:15 Live demo: "Proton dose calculations", Justin Phillips
  • 1:15-1:30 Live demo: "Interactive B-spline registration with landmark constraints", Nadya Shusharina
  • 1:30-1:45 Group discussion


Registration is not required. All are invited.

Meeting Minutes

The audience provided valuable feedback about their


  • Documentation still out of date
  • Google hangout, may not work at all locations
  • Developer documentation for python is sadly lacking

Bug and feature requests (infrastructure)

  • Better DICOM-RT support sorely needed, esp export & import
  • External beam planning module would be good to use with external dose engines
  • Can't read DICOM because extra files in the same folder
  • Loading DICOM is slow
  • Matlab bridge is difficult to get working
  • Sets of 2D images are not handled well

Bug and feature requests (registration)

  • Reg-2-3 hard to build
  • Improved automatic rigid registration
  • Qualitative evaluation of deformable registration, such as shared cursor or split screen
  • ROI for registration
  • Intensity-based range of values for registration
  • Mass-preservising registration