Horos - A free, open source 64-bit DICOM medical image viewer
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Weasis - Weasis is a multipurpose standalone and web-based DICOM viewer.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
MicroDicom - DICOM viewer. MicroDicom is a free DICOM viewer. Export to the most common picture formats, movie, clipboard. It is equipped with most common tools for manipulation of DICOM images.
ZBrush - ZBrush is a digital sculpting and painting software solution.