Simulation of ultrasonic source code
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FOCUS is a continuous and transient wave ultrasound simulator designed to simulate ultrasound waves in a variety of media. FOCUS takes advantage of two primary simulation methods: the Fast Nearfield Method (FNM) and the Angular Spectrum Approach (ASA). ke FNM is used for calculating pressure fields near the transducer face, while the Angular Spectrum Approach is used to quickly calculate the farfield pressure.