In this talk we show the use of high frequency asymptotic approximation to the solution of the wave equation in photoacoustic tomography (PAT). We consider ray tracing, a technique that involves solving the wave equation along the trajectories of a Hamiltonian system. We evaluate the quality of the ray tracing solutions to both the forward and inverse problem against a full wave solution obtained using a k-space method implemented in k-Wave Toolbox [1]. The major benefit of ray tracing approach versus the full wave solution is that the solution along each ray can be obtained independently and at a much lower cost than the full solution. [1] B. E. Treeby and B. T. Cox, k-wave: Matlab toolbox for the simulation and reconstruction of photoacoustic wave fields, Journal of biomedical optics, 15 (2010), pp. 021314–021314.

This presentation is part of Minisymposium “MS44 - 3D Image Depth/Texture/Reflectivity Tracking, Modelling and Reconstruction”
organized by: Catherine Higham (University of Glasgow) , Roderick Murray-Smith (University of Glasgow) .

Authors:

Francesc Rullan (University College London)

Marta Betcke (University College London)

Keywords:

computed tomography, inverse problems