TABLE I.

Virtual imaging system and discretization parameters

Ultrasound system		Discretization
Number of receivers J	256	Grid size Nx	360
Number of transmitters I	64	Grid intervals δx	0.6 mm
Transducer radius R	110.4 mm	Points per wavelength $\frac{c_{min}}{{f_0}^{\delta x}}$	5.0
Pulse frequency f0	0.5 MHz	Number of time steps K	640
Sampling frequency	5 MHz	Time steps δt	0.2 μs
Acquisition time (per source)	128 μs	CFL Number $\frac{c_{ma{x}^{\delta t}}}{\delta x}$	0.53