Simulations of ultrasonic fields of radial ultrasonic array

Abstract

Objective of this study was to develop an ultrasound probe small enough (diameter – less then 10mm, length less then 6mm) The probe must send and receive signals in 360 degrees, obtaining in this way the information needed for the software to generate a 2D image. In order to choose best suitable dimensions and frequency of the ultrasonic radial array, simulations of different array configurations were performed. The fields of elementary rectangular transducers were obtained by means of the impulse response method. Ultrasonic fields in a transmission mode of 10MHz and 5 MHz transducers with different dimensions (length 5 mm, width – 2mm, 1mm and 0.7mm) were simulated. The coverage of the field of the radial array with 16 and 32 elements, with different transducer frequencies were simulated. Performed simulations show, that the best results could be achieved using 5MHz 32 transducers array with dimensions of elementary transducers 5x0.7 mm.