3D Slicer is a free, open source software for visualization, processing, segmentation, registration, and analysis of medical, biomedical, and other 3D images and meshes; and planning and navigating image-guided procedures.
Highlights:
Free, open-source software available on multiple operating systems: Linux, macOS and Windows.
Multi organ: from head to toe.
Support for multi-modality imaging including, MRI, CT, US, nuclear medicine, and microscopy.
Real-time interface for medical devices, such as surgical navigation systems, imaging systems, robotic devices, and sensors.
Highly extensible: users can easily add more capabilities by installing additional modules from the Extensions manager, running custom Python scripts in the built-in Python console, run any executables from the application’s user interface, or implement custom modules in Python or C++.