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Anisotropy Map

Anisotropy Map

User Interface

General Information

Module Type & Category

Type: CLI

Category: Diffusion.GTRACT

Authors, Collaborators & Contact

Author: This tool was developed by Vincent Magnotta and Greg Harris.


Contact: name, email

Module Description

Program title Anisotropy Map
Program description This program will generate a scalar map of anisotropy, given a tensor representation. Anisotropy images are used for fiber tracking, but the anisotropy scalars are not defined along the path. Instead, the tensor representation is included as point data allowing all of these metrics to be computed using only the fiber tract point data. The images can be saved in any ITK supported format, but it is suggested that you use an image format that supports the definition of the image origin. This includes NRRD, NifTI, and Meta formats. These images can also be used for scalar analysis including regional anisotropy measures or VBM style analysis.
Program version 4.0.0
Program documentation-url -


Use Cases, Examples

This module is especially appropriate for these use cases:

  • Use Case 1:
  • Use Case 2:

Examples of the module in use:

  • Example 1:
  • Example 2:


  • Tutorial 1
    • Data Set 1

Quick Tour of Features and Use

A list panels in the interface, their features, what they mean, and how to use them.

  • Input Parameters
    • Input Tensor Image Volume [--inputTensorVolume] : Required: input file containing the diffusion tensor image
    • Type Code for Anisotropy Map [--anisotropyType] : Anisotropy Mapping Type: ADC, FA, RA, VR, AD, RD, LI Default value: ADC

  • Output File
    • Output Anisotropy Image Volume [--outputVolume] : Required: name of output NRRD file containing the selected kind of anisotropy scalar.

User Interface


Notes from the Developer(s)

Algorithms used, library classes depended upon, use cases, etc.


Other modules or packages that are required for this module's use.


On the Dashboard, these tests verify that the module is working on various platforms:

Known bugs

Links to known bugs in the Slicer3 bug tracker

Usability issues

Follow this link to the Slicer3 bug tracker. Please select the usability issue category when browsing or contributing.

Source code & documentation

Links to the module's source code:

Source code:

Doxygen documentation:

More Information


Funding for this version of the GTRACT program was provided by NIH/NINDS R01NS050568-01A2S1


Publications related to this module go here. Links to pdfs would be useful.