Interpolation methods for economical pulse-echo signal synthesis

Models for pulse-echo simulations use a distribution of point scatterers to generate realistic computer phantoms. In these simulations, the contribution from a pair of transmit-receive transducer elements evaluated at a single scatterer produces the same signal on each A-line with different time delays and amplitude scale factors. Instead of re-calculating the pressure signals for each A-line, a much more efficient approach delays and scales the pressure signals before superposing the contributions from different transducer elements to obtain each simulated A-line.