CALIBRATION OF ULTRASONIC, BASED ON ELASTICITY, IMAGING OF THE LESION FOCUS Russian patent published in 2019 - IPC A61B8/08 A61N7/02 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medical equipment, specifically to use of imaging for spatial display of elasticity. Ultrasonic elastographic imaging device comprises ultrasonic scanner and shear wave elastography processor configured to control operation of ultrasonic scanner for target medium and forming a preliminary map of spatial distribution of elasticity, based at least in part on the result of interrogation, wherein the shear wave elastography processing processor is further configured to determine the calibrated map of the spatial distribution of elasticity by calibrating the pre-map of the spatial distribution of elasticity on the reference map of the spatial distribution of elasticity, containing a set of different values of elasticity corresponding to reference medium, which is not said target medium and is not located in it. Ablation imaging apparatus connected to the ultrasonic elastographic imaging device comprises an ablation visualization device and an ablation imaging processor configured to respond to commands from the imaging apparatus, control the operation of said ablation imaging device for requesting said target medium, measurement, from monitored positions on opposite sides of ablated tissue boundary, propagation delay of first shear wave in target medium and the second shear wave formed as a result of corresponding different pushing, which are performed separately, and making a decision, based on the propagation delay function of the first shear wave and propagation delay of the second shear wave, on whether said boundary intersects between said two positions.

EFFECT: use of inventions makes it possible to minimize distortions in shear wave measurement caused by presence of rigid tools.

14 cl, 5 dwg