Experimental Verification of Modeled Thermal Distribution Produced by a Piston Source in Physiotherapy Ultrasound

Figure 2

Acoustic fields of transducer and ideal piston without attenuation. (a) Normalized pressure on the propagation axis. (b) and (c) Complete acoustic field of piston and transducer, respectively (linear grayscale of normalized acoustic pressure with respect to the last maximum peak at Rayleigh distance). Comparisons between FE acoustic field and Rayleigh integral gave insignificant variations (less than 0.04% of error in certain points).

(a)

(b)

(c)