OPERATIONAL MONITORING OF THE OPERABILITY OF DIGITAL X-RAY DIAGNOSTIC DEVICES BEFORE THE START OF PATIENT ADMISSION

For qualitative work of  X-ray diagnostic equipment and simple detection of the fact of malfunction should be carried out routine checks and focused on the X-ray operator. The purpose of the article was to develop a simplified approach to periodical technical control of X-ray equipment and to verify the equipment functioning stability without the use of a specialized test object. The article presents the results of theoretical and experimental study of the method of operative checking the operability of X-ray diagnostic machines with digital receptor in the conditions of continuous functioning of the department. The presented method is oriented on the estimation of digital X-ray diagnostic apparatus operability based on the determination of the parameters of the registered image obtained in the absence of the test-object in the input plane of the receptor and the further estimation of the output signal-to-noise ratio and the receptor transmission coefficient. An algorithm for operational control of the digital X-ray diagnostic apparatus efficiency was developed. The expert method was used to determine the valid ranges of key image parameters changes. The study shows the operability of the method and its simplicity.

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