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Home < Documentation < Nightly < Extensions < SlicerRT

For the stable Slicer documentation, visit the 4.10 page.

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Introduction and Acknowledgements

Authors: Csaba Pinter (PerkLab, Queen's University), Andras Lasso (PerkLab, Queen's University)
Contributors: Greg Sharp (Massachusetts General Hospital), Kevin Wang (Princess Margaret Hospital, UHN Toronto), Steve Pieper (Isomics)

License: Slicer license
Download/install: install 3D Slicer, start 3D Slicer, open the Extension Manager, install the SlicerRT extension (see more details on the download page)

Extension Description

SlicerRT Logo 3.0 128x128.png

  • SlicerRT is a radiation therapy toolkit for 3D Slicer, containing generic RT features for import/export, analysis, visualization, aiming to make 3D Slicer a powerful radiotherapy research platform. SlicerRT development is currently funded by CANARIE.
    SlicerRT was originally created via funding by Cancer Care Ontario and the Ontario Consortium for Adaptive Interventions in Radiation Oncology (OCAIRO) to provide free, open-source toolset for radiotherapy and related image-guided interventions.
  • The SlicerRT extension incorporates Plastimatch modules and algorithms.
  • Additional information for users can be found on the User's Guide page


SlicerRT highlights

Use Cases

  • Comparison of dose maps and dose volume histograms from various treatment planning systems
  • Evaluation of the effect of different adaptive techniques (IGRT, image-based non-rigid patient motion compensation, etc.)
    • Calculate couch shift parameters for patient setup correction in IGRT
  • Dose accumulation with motion compensation
  • Testing of treatment planning algorithms
  • Calculation of PTV margin
  • Proton dose calculation
  • Gel dosimetry analysis
  • Tumor volume tracking
  • Treatment plan similarity measurement in the cloud
  • Batch structure set conversion


Comprehensive tutorials

Module tutorials

Similar Extensions

  • Plastimatch: SlicerRT and Plastimatch are complementary software libraries. Plastimatch focuses on delivering new computational methods radiotherapy, while SlicerRT aims for providing an easy-to-use interface for a wide range of stable, well-tested radiotherapy related features. SlicerRT uses Plastimatch internally for certain operations.
  • Gel Dosimetry: Slicelet facilitating a streamlined workflow to perform true 3D gel dosimetry analysis for commissioning linacs and evaluating new dose calculation procedures
  • Film Dosimetry: Slicelet supporting workflow to perform 2D film dosimetry analysis for commissioning new radiation techniques and to validate the accuracy of radiation treatment by enabling visual comparison of the planned dose to the delivered dose


How to cite

Please cite the following paper when referring to SlicerRt in your publication:
C. Pinter, A. Lasso, A. Wang, D. Jaffray and G. Fichtinger, "SlicerRT – Radiation therapy research toolkit for 3D Slicer", Med. Phys., 39(10) pp. 6332-6338, 2012

  author = {Pinter, C. and Lasso, A. and Wang, A. and Jaffray, D. and Fichtinger, G.},
  title = {SlicerRT – Radiation therapy research toolkit for 3D Slicer},
  journal = {Med. Phys.},
  year = {2012},
  volume = {39},
  number = {10},
  pages = {6332-6338},

Information for Developers