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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Ultrasound Med Biol. 2017 Jun 20;43(9):1975–1985. doi: 10.1016/j.ultrasmedbio.2017.04.030

Fig. 1.

Fig. 1

(a) Schematic diagram of the experimental arrangement; (b) photograph of the custom-built 12-element HIFU transducer array. The center frequency of the array was 1.5 MHz, and the range of operable frequencies was 1.0–1.9 MHz. HIFU = high-intensity focused ultrasound.