The work describes the performance characteristics of roentgenographic screen-optics-CCD-matrix systems based on the KRTs-1 digital roentgenographic system developed at SpektrAp, Ltd. The efficiency of X-ray detection is estimated from the minimum detectable contrast and maximum resolution. The effect of the X-ray imaging system components on the efficiency of detection is studied. The X-ray screen structure is shown to have a crucial effect on the efficiency of detection as estimated from the image resolution.
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