Source of Support: None, Conflict of Interest: None
On January 1, 1988 the amended Radiation Protection Regulation for X-ray Sources came into force in Germany. With that the old regulation which was valid since 1973 was discontinued. This amendment established the regulation on quality assurance in diagnostic radiology. The main objective of the quality assurance is the optimization of the image quality while maintaining the demand of the smallest possible exposure of the patient. In that connection the user of diagnostic X-ray equipment is asked to perform acceptance and constancy tests. Regulations of this kind also lead to a significant improvement of the image quality while lowering the exposure of the patient.