The thorax phantom is elliptical in shape and properly represents an average human torso in proportion, density and two-dimensional structure.  It measures 30 cm long x 30 cm wide x 20 cm thick.  The phantom is constructed of proprietary tissue equivalent epoxy materials.  Linear attenuations of the simulated tissues are within 1% of actual attenuation for water and bone, and within 3% for lung from 50 keV to 15 MeV.

Numerous options are available.

Documentation