Photographic Quality Control Required Tests The following tests must be performed at the indicated frequencies and records kept of the results. To promote any means to reduce patient exposure without sacrificing image quality.To advise the director of X-ray safety of any accident involving over-exposure to a patient.For posterior bitewing films, these limits are listed in Chart 1. To ensure entrance exposure dose to patients does not exceed specified limits.To conduct yearly quality assurance tests on the x-ray machines and daily processing tests and maintain records of such tests.To ensure appropriate acceptance tests are carried out on any new installations or relocations.To notify the Ministry of Health - X-ray Inspection Service of any new installation or relocation of existing dental X-ray units and ensure appropriate shielding is put in place.To ensure that the X-ray equipment is maintained in a safe working order.To ensure that only qualified persons operate the dental X-ray unit.In a group practice or a clinic, one specific dentist must be designated as the RPO. In a solo practice, the dentist is the RPO. ![]()
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