Lead numbers and letters

Lead numbers and letters are one of the darkroom accessories for the regular performance of radiographic film and handling processes. In this case for the unambiguous identification of radiograms. The numbers and lead letters were ordered and imprinted in a special area on the radiogram. In the X-ray cassettes there is a small rectangular area where the reinforcement screens are absent. In this area the film does not remain impressed and, therefore, can be subsequently used to mark the data relating the patient.