ANALYSIS OF BEAMFORMING FROM VARIOUS TRANSDUCER SHAPE

Medical ultrasound data suffers from blur caused by the volume expansion of the pressure field of the mechanical wave. This blur is dependent on the used excitation signal and focusing of the ultrasonic wave and can therefore be examined and manipulated to compute a set of better parameters for deconvolution on the data in order to improve overall system resolution. Looking at the ultrasound transfer function we can focus on the examination of the “point spread function” and ways to influence its size especially in the lateral direction. A method of simulating sound pressure with the aid of the impulse response is applied to a various shaped ultrasonic radiators. We focus our attention on the peak appearance in the pressure response of the transducers.