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. Author manuscript; available in PMC: 2022 Aug 1.
Published in final edited form as: Ultrasound Med Biol. 2021 May 11;47(8):2296–2309. doi: 10.1016/j.ultrasmedbio.2021.03.035

Figure 5:

Figure 5:

Ultrasound images acquired during HIFU treatment at 2.0 MPa for three microbubble concentrations. The left-side orange-colored images are nonlinear contrast-enhanced ultrasound images (obtained with amplitude modulation) and the right-side greyscale images are conventional fundamental B-mode images. The echoes in the contrast images are produced by resonant nonlinearly oscillating microbubbles and in the B-mode images are produced by larger (not-resonant) bubbles produced during the HIFU treatment.