Patent ID: 6866633

Claim:
A method for receiver beamforming for use in ultrasonic imaging, said method comprising the steps of: transmitting by means of at least one electroacoustic transducer at least one beam of acoustic wave signals into a body under examination, said signals being transmitted at a first frequency; receiving said acoustic wave signals reflected by said body under exmination through an array of receiving electroacoustic transducers; synchronizing said signals received by each of said receiving transducers by applying delays to said received signals, said delays being a function of the focusing of said transducers on said area, line or point of said body under examination; summing said synchronized signals from said transducers; separating from said summed signals components having even harmonics of said first frequency; transforming said separated components of said summed signals into image data of the structure of said body under examination; displaying said image data by display means; and wherein said delays are also determined as a function of said even harmonics of said first frequency and as a function of the position of said receiving transducers in said array of receiving transducers.