Figure 5.
Representative images of 4‐mm anechoic spheres at 3.0 cm depth from the 2D (IC5‐9‐D) (a) and 3D (RIC5‐9‐D) (b) transducers, and 2‐mm anechoic spheres at 2.5 cm depth from the IC5‐9‐D (c) and RIC5‐9‐D (d).
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