The Radiology Art project features scans submitted by different folks.

Scans are acquired as DICOM images using a GE CT scanner, then processed in Osirix software on a Macintosh iMac computer. Colors are assigned based on the varying densities of materials present throughout the object. Depending on the spread of densities within a particular subject, black or white backgrounds are chosen. Images are further processed in Adobe Photoshop for proper contrast and balance.

See the inner density of a wide variety of objects, in still images and in video. Link -via the Presurfer