mrtrix software package provides diffusion-weighted MRI white matter tractography, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install mrtrix
mrtrix is installed in your system.
Make ensure the mrtrix package were installed using the commands given below,
$ sudo dpkg-query -l | grep mrtrix *
You will get with mrtrix package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Science |
| Package | mrtrix |
| Version | 0.2.11-1 |
| Description | diffusion-weighted MRI white matter tractography |
| Sub Section | Science |