# Head CT MRI fusion/registration

**URL:** <https://discourse.slicer.org/t/head-ct-mri-fusion-registration/1333>\
**Category:** Support\
**Tags:** registration\
**Created:** [October 31, 2017, 3:13pm UTC](https://discourse.slicer.org/t/head-ct-mri-fusion-registration/1333 "2017-10-31T15:13:48Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 2, 2017, 2:54pm UTC](https://discourse.slicer.org/t/head-ct-mri-fusion-registration/1333/8 "2017-12-02T14:54:33Z")

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To modify Elastix registration parameters, open `Advanced` section and click `Show database folder` button. It should show the registration preset database folder. You can edit ElastixParameterSetDatabase.xml to add new presets (name, description, etc. and a list of registration steps) and edit/add .txt files to edit registration steps.

If you upload a set of images to dropbox, onedrive, google drive, … and post the link here then I can have a quick look

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_[View the full topic](https://discourse.slicer.org/t/head-ct-mri-fusion-registration/1333)._