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. Author manuscript; available in PMC: 2017 Sep 28.
Published in final edited form as: Phys Med Biol. 2017 Jul 13;62(15):6144–6163. doi: 10.1088/1361-6560/aa77df

Figure 1.

Figure 1

Experimental setup (not to scale). Polyacrylamide hydrogels with and without PSNE were placed in a sample holder at the focus of a high intensity focused ultrasound (HIFU) transducer. The acoustic emissions were monitored using an ultrasound linear array aligned with the focal point. Transverse and axial directions were defined relative to the center of the front face of the imaging array. The assembly was placed in a tank of degassed deionized water at 37°C and placed within the bore of a 3T clinical MRI scanner.