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. 2019 Dec 26;17:100160. doi: 10.1016/j.pacs.2019.100160

Fig. 2.

Fig. 2

The example of a toroidally focused LU array and the acoustic probe pulse field emitted by the PA generator in the Gaussian beam approximation for rf=30 mm, R=20 mm, Φ=22.5°, Θ=20°. Solid black lines are the isolines of Tgr.