. Author manuscript; available in PMC: 2007 Dec 6.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2006 Jun;53(6):1150–1159. doi: 10.1109/tuffc.2006.1642513

TABLE II.

Measured Computation Times Corresponding to a Peak Error of 1% for the Rayleigh-Sommerfeld Integral, Schoch Integral, Field II, DREAM, the Impulse Response Method (Numerical + Analytical and Numerical), and Time-Space Decomposition Applied to the FNM Integral.

Method	Input parameters	Computation time (seconds)	Time required relative to time-space decomposition
Rayleigh-Sommerfeld	121 abscissas	32.1521	844x
DREAM	40,000 elements at 1024 MHz	12.8355	269x
Field II	3,480 elements at 512 MHz	8.9723	188x
Schoch	20 abscissas	4.5396	95x
Impulse response (numerical)	2048 MHz	2.6999	56x
Impulse response (numerical + analytical)	512 MHz	0.8127	17x
Time-space decomposition	9 abscissas	0.0478	—