Numerical optimization method of the ultrasonic beam path

摘要

PROBLEM TO BE SOLVED: To solve a problem that transmit beam, which is created by dual beam steering by apodization, is optimized for only a single depth and significant line warping can occur away from this depth while an ideal transmit beam should have two peak locations, each following one of the receive beams, in 2-for-1 ultrasound beamforming. ;SOLUTION: The transmit beam shape in ultrasound multiline acquisition is improved by numerically optimizing the transmit beam, that is, the aperture function, such that no line warping occurs over the entire depth of field. The aperture function is numerically optimized by numerically optimizing a cost function, which is dependent on the aperture function. The numerically optimized aperture function is then used in a multiline acquisition mode of an ultrasound imaging system.;COPYRIGHT: (C)2001,JPO