Synthetic B-scan images by numerical solution of a wave equation.
We describe an efficient method for obtaining model sector-scan images by direct solution of a linear wave equation characterizing pulse scattering from spatially varying bulk modulus and density distributions. Using a pseudospectral approach, the wave equation is solved numerically for each transducer orientation to obtain a set of A-line signals. After preprocessing the raw data, sector-scan images are constructed and displayed. Examples are given for several scattering object configurations, illustrating both specular and diffractive scattering in inhomogeneous media and demonstrating the utility of the model.
Finette
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Department of Biomedical Engineering, Rutgers University, Piscataway, NJ 08855.
D003198:Computer Simulation; D006801:Humans; D014463:Ultrasonography / Q000379:methods*