Computer-aided quantitative control applied to image and radiation of x-ray equipment

Complete test of publication follows. Introduction. Using of digital x-ray equipment allows to limit the radiation effect on patients and to improve the quality of medical images. In this paper the comparative research of film and digital x-ray equipment was performed by computer-aided quantitative control. Materials and methods. Film x-ray equipment RUM-20M (Mostrentgen, Russian) and digital x-ray equipment Multix Pro (Siemens, Germany) were compared. For radiation control of micro-roentgen radiation the monitor RM-60 (Aware Electronix, USA) connected with computer was used. The quality of medical images was estimated with an aid of test object TRS-2 (Ukraine). The medical images were tested by evaluation of contours deformation level and quantitative heterogeneous pattern. The proposed algorithm and software for estimation of spatial chaos in digital medical image is based on calculation of the skew and the spread parameters and autocorrelation function. Results. Comparative experimental study showed that x-ray diagnostic system Multix Pro has higher value of the scale characteristic and the relative sensitivity by 55% and 32% respectively in comparison with to RUM-20M, as well as resolution was also higher by 41%. Thus the air dose x-radiation on a surface of the detector is 7,7 times lower. Conclusion. Performed analysis spoke about the necessity to upgrade the x-ray instrumentation of low-doses by receivers with digital image processing and harmonization of domestic rules for dose loads and image quality in accordance with European standards.