With increasing interest in the use of reject/retake analysis as an integral part of a routine quality assurance program in diagnostic radiology comes the need for a better understanding of the information obtained. The present study investigated the reject/retake profiles in a pediatric radiology department on a long-term basis. Retake profiles have been continually analyzed for a period of 24 months. Emphasis of the analysis were placed upon understanding the characteristics of the profiles observed and the effectiveness of the corrective actions implemented. The analysis indicated that after the implementation of a comprehensive quality assurance program, the overall rejection profile is predominantly determined by the rate of positioning errors.

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The increasing cost and complexity of state-of-the-art radiological equipment, and the need for more comprehensive safety and performance assurance, have increased maintenance expenditures to a level where they have become one of the largest operating expenses of radiology departments. To cope with this ever increasing expenditure, a comprehensive in-house maintenance program was implemented in our institution. This program properly balanced the capability of the radiology department's in-house technical personnel with support provided by equipment manufacturers' service organizations. Quality assurance activities are also included as an integral part of the entire program. Since the implementation of the program, an average 40% reduction in the annual maintenance expenditure has been observed.