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Quasimonochromatic Radiation for Dental Radiography

To obtain a high quality dental radiograph, it is advantageous to use 40 kiloelectron volt (kev) monochromatic radiation. The feasibility of obtaining this type of radiation by filtering rays of rare earth elements was studied by a computer program before experimentation. By use of 40 kev monochromatic radiation, skin exposure was reduced by a factor of two to three.