A pseudo-spectral time-domain method for ultrasound wave propagation in soft biological tissue
Year: 2024
Type: article
Abstract: 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.
Source: Journal of Computational Physics
Authors: Carlos Spa, Josep de la Puente
Institution: Barcelona Supercomputing Center
Language: English
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: hybrid
Estimated APC paid: $3,860
OpenAlex ID: W4403930951