A data management system, implemented on a minicomputer, has been developed to provide rapid and convenient access to parts, service, performance, and radiation safety records for diagnostic x-ray equipment. The system is designed to provide on-line information retrieval and reporting for the regional medical physics/x-ray service organization for our seven medical centers and their associated clinics. The on-line data base contains: complete information describing each x-ray system; parts inventories at each medical center and at regional service headquarters; and detailed summaries of all service, preventive maintenance, performance, and radiation safety reports for the previous two years and the current year-to-date. Data includes, in part, labor times, system downtime, problem areas and types, parts used, tube potential and current calibration, half-value layers, and radiation safety noncompliances to be corrected. In addition to retrieval of information for display on a CRT terminal, printed reports can be obtained on demand which summarize the financial transactions on a monthly and year-to-date basis. Additional reports describing parts inventories, x-ray system histories, and statistical summaries of service problems may also be printed on demand. The specific contents of the data base, correlative capabilities of the system, and examples of available reports will be discussed.