Before starting this tutorial
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#. Make sure that you have the following files in your working directory:

   * ``single_subject/data/mt/mt0.nii.gz``: The image without the magnetization transfer pulse.
   * ``single_subject/data/mt/mt1.nii.gz``: The image with the magnetization transfer pulse.

   You can get these files by downloading :sct_tutorial_data:`data_mtr-computation.zip`.

#. Open a terminal and navigate to the ``single_subject/data/mt/`` directory:

.. code:: sh

   cd {PATH_TO_DOWNLOADED_DATA}/single_subject/data/mt/