High intensity ultrasound phased array for surgical applications

In this paper, we present a method for simulating the field intensity of ultrasound beam using a two dimensional phased array transducer for High Intensity Focused Ultrasound (HIFU) based surgery. The parameters used and the field modeling is based on Huygen´s principle. We further simulated the field intensity of ultrasound beam in two media, taking into consideration the effect of different attenuation coefficients and beam refraction at the interface. Simulation results show that a focused HIFU beam can be obtained by means of manipulating the phase of the signal in each of the elements in a generic ntimesn-element square array transducer.