ITK-SNAP

SNAP is a software application used to segment structures in 3D medical images. It provides semi-automatic segmentation using active contour methods, as well as manual delineation and image navigation. In addition to these core functions, SNAP provides a number of supporting utilities. Some of the core advantages of SNAP include

* Linked cursor for seamless 3D navigation
* Manual segmentation in three orthogonal planes at once
* Simplified user interface for selecting parameters for the active contours method
* Support for many different 3D image formats
* 3D cut-plane tool for fast post-processing of segmentation results
* Extensive tutorial
* Companion program Convert3D allows command-line operation