Abstract
As a basic study on the echo trigger pulse propagation in the human body in relation to the Extracorporeal Shock Wave Lithotripter, an investigation on the problems of propagation and convergence of ultrasonic pulses ejected from arc-shaped piezoceramic transducers into the human body model was carried out, together with a comparative study of the results of a computer simulation with those of the experiment. The numerical analysis was performed using a newly-devised method similar to the so-called FE-TD method widely used for analyzing electromagnetic fields.
