Computer-controlled non-metallic phantom platform to simulate head motion with two degrees of freedom

A computer-controlled non-metallic head phantom platform was designed and constructed from 3D-printed parts. Driven by pneumatic stepper motors, the platform can simulate head motion with two degrees of freedom: tilting and rolling, with angular step resolution of 0.0833 degree and 0.227 degree, respectivily. A "neck/spine" design allows different static head phantoms to be mounted to the platform while still be able to fit inside standard head coils. The platform was tested on a PET/MRI scanner and successfully produced motion artifact with simulated motion.