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(Color online) Nonlinear waveforms measured through water, phantoms, and ex vivo body wall, including derated waveforms to compensate for attenuation in the presence of a phantoms or body wall. (a) Comparison of focal waveforms for propagation through water (free field) and the wedge phantom. (b) Focal waveforms through water and aberrating phantom. (c) Focal waveforms through water and 4-cm thick body wall.
