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Second-harmonic generation in focused shear wave beams in tissue-like media with arbitrary amplitude shading at the source

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Numerical analysis reveals effects of amplitude shading on second-harmonic generation in tissue phantoms, improving accuracy.

Second-harmonic generation in shear wave beams is significantly influenced by amplitude shading conditions.
The study utilized a fourth-order Runge-Kutta method to solve nonlinear equations associated with second-harmonic generation.
Realistic source conditions, such as super-Gaussian amplitude shading, were shown to enhance the accuracy of second-harmonic modeling.
The analysis also included the calculation of longitudinal displacement from transverse displacement, contributing to the understanding of wave behavior.

Kaufinger et al. (2025) studied this question.

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