The Model 9404 Perma-Doc Phantom provides the necessary permanent documentation required by the
NRC's new and stringent quality assurance tests associated with HDR. The Perma-Doc, with its centimeter scale
automatically transferred to the film by fluorescent radiation, readily identifies up to 20 source positions and
their stepping accuracy.
Two matching 0.375" acrylic plates allow for insertion of a 10" x 12" ready-pack film. The film is exposed by the HDR Iridium-192 source with dwell times of 1 second over a maximum of 20 positions spaced 1cm apart. The resulting film displays the source images superimposed on the image of the centimeter scale.