ИСТИНА

Background and Purpose. The research is aimed at specifying the morphological components forming the quantitative characteristics of the structure and composition of atherosclerotic plaques. Materials and methods. 75 patients with stenoocclusive damage of internal carotid arteries of atherosclerotic genesis were examined. Comparison between values of intensity of acoustic signal at duplex scanning from 50 various areas of atherosclerotic plaques with results of morphological research of these areas, removed during carotid endarterectomy was performed. Ultrasonic research was carried out on system Philips «iE33», estimation of values of intensity of the acoustic signal strength was carried out by means of program Region of interest. Results. The quantitative estimation of the plaque content and the morphological research that followed show that the scope of the ultrasonic signal intencivity meanings emanating from the atheromatosis zones, as well as from fibrosis seats with a small quantity of lipophages and/or newly emerged vessels, as well as calcification seats differed to a great degree and were 1,0 - 5,0 dB; 22,0 - 31,5 dB and 42,0 – 45,0 dB correspondingly. Calcificats found in the seats of atheromatosis and fibrosis resulted in a considerable increase of intencivity of the ultrasonic signal - 9,0- 20,0 dB и 32,0 – 39,0 dB correspondingly. On the contrary, a graite quantity of lipophages in the fibrosis seats and/or newly emerged vessels reduces the intencivity of the ultrasonic signals (10,0 - 20,0 dB). Conclusions. Intencivity of the ultrasonic signal from the atheromatosis zones, as well as from fibrosis seats, as well as calcification seats differed to a great degree. Calcificats found in the seats of atheromatosis and fibrosis resulted in a considerable increase of intencivity of the ultrasonic signal. On the contrary, a graite quantity of lipophages in the fibrosis seats and/or newly emerged vessels reduces the intencivity of the ultrasonic signals. The quantitative ultrasonic estimation of atherosclerotic plaques promotes the competent and proved choice of individual tactics of management patients. In the future researches use of the given technique will probably allow to predict development asymptomatic damages of a brain after angiosurgery operations on internal carotid artery.