http://www.osirix-viewer.com/

OsiriX 3.3 has just been released !

OsiriX is an medical image processing software dedicated to DICOM
images.

Major new features:
- DICOM Validator of David Clunie is now included in the Meta-Data
window
- Lens
- Database optimizations : manage up to 200'000 studies, with more
than 100 millions of images
- Merge Volume
- Save/Load all ROIs of a series

http://www.osirix-viewer.com/