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For the latest Slicer documentation, visit the 4.6 page.

Introduction and Acknowledgements

This work is part of the National Alliance for Medical Image Computing (NA-MIC), funded by the National Institutes of Health through the NIH Roadmap for Medical Research, Grant U54 EB005149. Information on NA-MIC can be obtained from the NA-MIC website.
Author: Isaiah Norton, Goldby Lab
Author: Demian Wassermann, SPL
Contributor1: Steve Pieper, Isomics Inc.
Contributor2: Alex YarmarKovich, Isomics Inc.
Contact: Demian Wassermann,

Surgical Planning Laboratory  

Module Description

Allows the user to manipulate several different characteristics of the traced white matter tracts. Examples are: change of color; display of the fractional anisotropy along the tract; display of the tracts as tubes or lines; interactive selection of the tracts; and cropping.

Use Cases

Most frequently used for these scenarios:

  • Use Case 1: Change the scalar quantity displayed along the tract, like Fractional Anisotropy or Color By Orientation
  • Use Case 2: Display the tracts as lines or tubes
  • Use Case 3: Interactive selection or cropping of a certain bundle.


Links to tutorials that use this module

Panels and their use


    • Line: Display the tracts as lines
    • Tube: Display the tracts as tubes
      • Slice Intersection: Show the tracts in the 2D view
    • Glyph: Display glyphs representing the diffusion tensors along the tracts
    • Percentage of Fibers Shown: Select how many of the total tracts in the bundle are shown. Useful for performance.
  • Fiber Bundle Selection: Perform interactive selection and cropping of the tracts
    • ROI for Fiber Selection: Select a ROI to use as an interactor with the tracts
    • Disable/Positive/Negative ROI: Set the selection mode to Select everything; Select the tracts traversing the ROI; Select the tracts not traversing the ROI
    • Create Bundle From ROI: Create a new fiber bundle which contains only the selected ones
    • Update Bundle From ROI: Update the current fiber bundle leaving only the selected ones
  • Advance Display: For the lines, tubes and glyphs
    • Visibility: Toggle the visibility of the bundle
    • Opacity: Change the transparency level of the bundle
    • Color By: Change the way the bundle is colored; either by a tensor-derived property or by a group id
    • Solid Color: Color the bundle of a single solid color


Publications related to this module go here. Links to pdfs would be useful. For extensions: link to the source code repository and additional documentation

Information for Developers