. Author manuscript; available in PMC: 2018 Oct 1.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2017 Jul 11;64(10):1439–1449. doi: 10.1109/TUFFC.2017.2725839

TABLE IV.

Measured safety parameters with three Δϕ’s (0°, 140°, and 180°)

Δϕ	MI	I_SPTA (mW/cm²)	I_SPPA (W/cm²)
0°	1.73	70.49	117.48
140°	0.77	11.40	19.00
180°	0.72	9.45	15.76

FDA limit	1.9	720	190