METHOD FOR STANDARDIZATION OF QUALITY OF IMAGE OBTAINED FROM ORTHOPANTOMOGRAM BY MEANS OF SCANNING Russian patent published in 1999 - IPC

FIELD: roentgenology for bringing- up of images of orthopantomograms differing in quality to a single standard. SUBSTANCE: shooting and photographic processing of X-ray photographs is performed at observation of all physico-technical conditions of these processes. Preliminarily an aluminium standard measuring 2x9 cm, 1 mm thick, is introduced in a metal magazine, 3 cm from its lower right-hand edge. Three qualitative X-ray photographs are selected and alternately scanned at the same illuminance of the negatoscope and scanning device, introduced in the computer. The computed average density of graphic representation of the aluminium plate on three X-ray photographs is taken as a criterion of quality of X-ray photographs. EFFECT: static processing of X-ray photographs differing in quality, examination of the dynamics of pathologic process of one and the same patient. 1 cl, 1 ex