MRIcroGL is a cross-platform tool for viewing DICOM and NIfTI format images. It comes with an easy-to-use, drag-and-drop user interface as well as a scripting language.

MRIcroGL is a general-purpose medical image viewer that allows you to load overlays (e.g. statistical maps), draw regions of interest (e.g. create lesion maps).

It runs on Windows, Linux and OSX.


  • A friendly user-interface
  • View large numbers of medical imaging formats
  • Built-in volume rendering
  • Allow loading  Overlays
  • Drawing Regions of Interest (ROI)
  • Supports advanced drawing
  • Neurological versus radiological convention: allow you to choose whether the 2D axial and coronal slices are shown in neurological or radiological convention
  • Mosaic Views
  • Built-in scripting support with scripting editor

Supported File Formats

MRIcroGL supports NIfTI, DICOM, MGH, MHD, NRRD, AFNI format images.

Here is a full list of the supported formats:


  1. Windows
  2. Linux
  3. macOS


The Software has been developed for research purposes only and is not a clinical tool.
Copyright (c) 2014-2019 Chris Rorden. All rights reserved.