Description: This plugin calculates FA, Mean diffusivity (MD), largestest (D1), second (D2) and smallest (D3) eigen diffusivity, radial diffusivity (Rad) and color coded FA maps from DTI images.

Author: Deqiang Qiu

Instructions:

Open multiple images in the 4D viewer and run the plugin.

By default, the plugin attempts to read in gradient encoding directions from DICOM fields.
Possible options include:
- "Load from DICOM fiels" attempts to read in gradient encoding directions from DICOM fields.
- Using "Load from file", a gradient table can also be loaded from an external space seperated .txt file, with each row containing one diffusion direction (see example ).
- Load previously saved gradient table from local database, a list of tables will be displayed for selection
- Note:The current gradient table can be saved to a local database using "Save Current Table"
- Input manually to the table

Set the noise threshold, voxels with B0 signal lower than this threshold will not be processed.

Choose what output images to produce. Sometimes, for colorFA to display correctly it may be neccessary to check "Don't propagate WW/WL between series" in Menu "2D Viewer"

AutoSave:Choose whether to automatically save the output images to the database

To correct for eddy current induced distortion, Exporter plugin can be used to export/import the images to/from nifti type and interface with FSL

Version: 1.6

Contact: Please send comments or questions to Deqiang Qiu qiudeqiang@gmail.com.

Download: Expand the archive DTIMap.osirixplugin.zip and double-click the plugin icon (or put the plugin into your Library/Application Support/Osirix/Plugins folder.). It may be neccessary to restart Osirix.

Youtube Tutorial:

Compatibility: OSX 10.9.2; Osirix: v5.6. Check out history versions

Acknowledgements: Brian Hargreaves, Kyung Sung, Michael Moseley. Original ADCMap source code was provided by Brian Hargreaves.

DTI Map