High-Intensity Focused Ultrasound (HIFU) Induced Tissue Heating
Application ID: 143171
This tutorial studies tissue heating induced by high-intensity focused ultrasound (HIFU). The nonlinear propagation of the HIFU signal is modeled using the Nonlinear Pressure Acoustics, Time Explicit physics interface. In this example, the source amplitude is sufficient to generate harmonics up to the third order.
The model then transforms the transient acoustic solution into the frequency domain and calculates the acoustic intensity and energy dissipation for each frequency component up to the third harmonic. This approach enables the incorporation of frequency-dependent absorption characteristics, leading to a more accurate prediction of energy deposition.
Finally, tissue heating and cooling are modeled using the Bioheat Transfer equation, while tissue damage is assessed through the Arrhenius Kinetics model.
The material properties of the liver tissue used in this study are obtained from published literature.
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