A computerized X-ray dose-monitoring system.

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Abstract
An X-ray dose-monitoring system using a small digital computer is described. Initially and for every 6 mo. afterward, the system is calibrated using an exposure meter. For each exposure, the computer receives values of X-ray technique and beam geometry from the X-ray generator through a specially designed electronic interface. Then, by means of calibration data, entrance exposure, area exposure product and integral dose are obtained and printed for each patient examined. The overall accuracy of the system is better than .+-. 20%. Operation is semiautomatic, requiring minimum operator intervention. Over 2000 patients were monitored with the device. Because the system is computer-based, it offers the opportunity for statistical analysis of the data base created, as the results for each patient are stored on computed disk.

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