Method for tissue characterization by ultrasound wave attenuation measurements and ultrasound system for tissue characterization

    公开(公告)号:US11612381B2

    公开(公告)日:2023-03-28

    申请号:US16935311

    申请日:2020-07-22

    申请人: ESAOTE S.p.A

    摘要: A method for tissue characterization by ultrasound wave attenuation measurements is provided that comprises: a) transmitting at least an ultrasound pulse in a target body; b) receiving ultrasound pulses reflected by the target body and transforming the reflected ultrasound pulses into RF reception signals; c) extracting an envelope of the received RF signals; d) carrying out a logarithmic compression of the extracted envelope and e) computing a propagation depth dependent attenuation coefficient of the tissues crossed by the ultrasound pulse in the target body as the slope of the line fitting the logarithmic compressed envelope data along the penetration depth of the ultrasound pulse in the target body. The disclosure relates also to an ultrasound system for carrying out the method.

    Method and system for performing retrospective dynamic transmit focussing beamforming on ultrasound signals

    公开(公告)号:US11624816B2

    公开(公告)日:2023-04-11

    申请号:US16931482

    申请日:2020-07-17

    申请人: ESAOTE S.p.A.

    摘要: Performing retrospective dynamic transmit focusing beamforming for ultrasound signals by a) transmitting plural transmit beams, each transmit beam centered at a different position along array, having width or aperture encompassing plural laterally spaced line positions, each transmit beam width or aperture overlapping width or aperture of adjacent transmit beam or more laterally spaced transmit beams; b) receiving echo signals; c) processing echo signals to produce plural receive lines of echo signals at laterally spaced line positions within width or aperture of transmit beam; d) repeating steps b), (c) for additional transmit beams of plural transmitted transmit beams; e) equalizing phase shift variance among receive lines at common line position resulting from transmit beams of different transmit beam positions concurrently with steps c), d); f) combining echo signals of receive lines from different transmit beams spatially related to common line position to produce image data; g) produces an image using image data.