AUTOMATIC FILM DENSITY READING SYSTEM

An automatic film density reading system is described in which dosimetry film is identified with a film badge number preassigned to a particular individual; densities resulting from radiation exposure are observed and converted to voltage readings for each of four fields corresponding to exposures through four filtered media; and these identification and density data, together with additional pertinent information, are automatically recorded on punched paper tape in a format compatible to data processing equipment. Theory of the system is discussed; operating instructions are given; the electronic system is described; and detailed board theory and wiring diagrams are included. (auth)