METHOD OF ANGULAR ULTRASOUND RADIOGRAPHIC OPACIFICATION OF INHOMOGENEITY BORDERS AND INHOMOGENEITY IN BIOLOGICAL TISSUES DURING AN ULTRASOUND DIAGNOSTICS

摘要

FIELD: measuring equipment.;SUBSTANCE: invention relates to ultrasound diagnostics and may be useful for obtaining contrast radiography of the diagnosed organs. Method of ultrasound radiographic opacification consists in carrying out an ultrasound examination of the tissue region of interest by placing it on the surface of the skin ultrasonic sensor of the diagnostic ultrasound device, carrying out ultrasonic action and obtaining, when fixing the position of the diagnostic sensor of a control ultrasound image, while the additional radiator or several additional radiators are made acoustic to heat the boundaries of inhomogeneities in the tissues, they are installed on the skin with the ability to move and direct at angles of incidence of the longitudinal wave in relation to the direction of each acoustic radiator in the range from 0 to 180 degrees, the range of angular displacements of additional acoustic radiators includes the critical angles of transformation of longitudinal waves into shear waves in the range of 20 to 90 degrees, the exposure time does not exceed one minute when radiation intensities, which do not exceed the limiting therapeutic levels. Additional ultrasound image is obtained and a control image is subtracted from it, after which a differential image is obtained and added to the reference image, the echogenicity of the inhomogeneities in the tissues is increased by further heating the boundaries of the inhomogeneities in the tissues to enhance the brightness of the differential image at a ratio of the acoustic impedances of the inhomogeneity and surrounding tissue is greater than 1 and the echogenicity of the surrounding tissue heterogeneity increases with the ratio of the acoustic impedances of the inhomogeneity and the surrounding tissue is less than 1.;EFFECT: use of the invention makes it possible to increase the contrast of the images.;1 cl, 17 dwg