| 摘要 |
FIELD: physics.SUBSTANCE: group of inventions relates to systems and methods for diagnostic ultrasonic imaging. The system comprises an array sensor which transmits a pushing pulse along a predefined vector to generate a shear wave and tracking pulses along tracking lines adjacent to the vector of the pushing pulse, and which receives echo signals from points along the tracking lines. The system also includes A-line memory for storing data of echo signals of the tracking line, a motion detector which responds to the tracking line data to detect motion as a result of the shear wave passing through the position of the tracking line, a speed sensor which measures the speed of the shear wave passing through the position of the tracking line. A display device displays shear wave measurement results. The system additionally includes a multi-linear beam former connected to the array sensor, which controls the array sensor to retransmit, in a time-alternating sequence, focused tracking pulses along tracking lines with a beam profile, which irradiates a plurality of adjacent tracking lines with ultrasound and, in response to the transmission of tracking pulses, for simultaneous reception of echo signals along the plurality of adjacent tracking lines for reproducing coherent echo signals along each of the plurality of adjacent tracking lines.EFFECT: use of the invention provides fast collection of data on a short-duration shear wave.13 cl, 7 dwg |
