NIfTI Studio is an open-source Matlab toolbox for NIfTI and Analyze (img/hdr) image visualization, editing, and 3D rendering. This toolbox was used to manually trace regions of interest (ROIs) for our custom zebra finch brain template in Layden et al. (2019), and also to create figures for several papers. Below are some example use cases for the toolbox:
3D rendering of the human MNI brain template with regions of interest (ROIs) [Code]

Mosaic of slices from the human MNI brain template with segmented grey matter [Code]

A 3D rendering of a zebra finch brain template with embedded ROIs [Code]

Slice mosaic of zebra finch brain template with ROIs [Code]
