Criteria are discussed, which a set of parameters must have, to be suitable in practical use for quality assurance in radiodiagnostics. lbe choosen parameters are described by 1.: definition ( if necessary) 2.: a melhod for measurement 3.: absolute values and tolerances. On1y film-processing and radiological standard-melhods are described, lhat means direct radiography and tluoroscopy wilh image - intensifier. Digital melhods ( DSA or CT ), spccial teehniques ( tomography) and applications in dentistry (panorama) are not regarded. Some fmt experiences concerning lhe most common faults of radiographic equipment are mentioned.

Criteria are discussed, which a set of parameters must have, to be suitable in practical use for quality assurance in radiodiagnostics. lbe choosen parameters are described by 1.: definition ( if necessary) 2.: a melhod for measurement 3.: absolute values and tolerances. On1y film-processing and radiological standard-melhods are described, lhat means direct radiography and tluoroscopy wilh image - intensifier. Digital melhods ( DSA or CT ), spccial teehniques ( tomography) and applications in dentistry (panorama) are not regarded. Some fmt experiences concerning lhe most common faults of radiographic equipment are mentioned.