Dort process-based method and system for adaptive beamforming in estimating the aberration in a medium

摘要

A method and system for adapting a focused beam of focused ultrasound imaging signals from an ultrasound probe ( 14 ) for compensating for the presence of an aberration (X) in a medium (OBJ) transmits a focused ultrasound imaging signal (FOC) into a region of a medium using a plurality of focused beams from a plurality of probe array elements (P). The return focused ultrasound imaging signals are received and a focused decomposition of time-reversal operator process determines the presence of an aberration in the region and correlates the aberration to selected probe array elements. The method and system adapt selected characteristics associated with the transmission of the ultrasound imaging signals and reception of the return focused ultrasound imaging signals from the selected probe array elements for compensating for the presence of the aberration in the region. The method and system further involve transmitting adapted focused ultrasound imaging signals into the region for generating a homogeneous wave front having reduced inhomogeneities arising from the aberration.