PUBLICATION TITLE
A pseudo-spectral time-domain method for ultrasound wave propagation in soft biological tissue
TYPE OF PUBLICATION
Article in journal
YEAR OF PUBLICATION
30 October 2024
AUTHORS
Carlos Spa, and Josep de la Puente
Bibliographic citation
Spa, C., & de la Puente, J. (2025). A pseudo-spectral time-domain method for ultrasound wave propagation in soft biological tissue. Journal of Computational Physics, 521, 113527.
Short summary
We introduce a Pseudo-Spectral Time-Domain (PSTD) method to simulate acoustic wave propagation in soft biological tissues, incorporating frequency-dependent power-law absorption and dispersion. A comprehensive Von-Neumann stability analysis highlights the influence of material parameters, time step, and spatial discretization on numerical stability. Validation is conducted through one-dimensional tests comparing numerical results with theoretical predictions for dispersion and attenuation, and two-dimensional simulations benchmarked against analytical Green’s functions. Additionally, forward simulations on a breast phantom model using typical ultrasound parameters demonstrate the method’s accuracy in modeling wave attenuation and dispersion. This PSTD method provides a reliable and efficient computational tool for advanced biomedical ultrasonics research.
Conference / Journal
Journal of Computational Physics
Publisher
Elsevier
