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3D Time Reversal Reconstruction For A Planar Sensor Example

Overview

This example demonstrates the use of k-Wave for the reconstruction of a three-dimensional photoacoustic wave-field recorded over a planar sensor array. The sensor data is simulated and then time-reversed using kspaceFirstOrder3D. It builds on the 3D FFT Reconstruction For A Planar Sensor and 2D Time Reversal Reconstruction For A Line Sensor examples.

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Simulating the sensor data

The sensor data is simulated using kspaceFirstOrder3D in the same way as in the preceeding examples. The utilised initial pressure distribution and the sensor mask are shown in 3D FFT Reconstruction For A Planar Sensor. The time-reversal reconstruction is then performed by setting the optional input 'TimeRev' to true.

% add time reversal flag to the input options
input_args = [input_args, {'TimeRev', true}];

% run the time-reversal reconstruction
p0_recon = kspaceFirstOrder3D(sensor_data, kgrid, c, rho, t_array, sensor_mask, input_args{:});

A plot of the reconstructed initial pressure distribution with a positivity condition is shown below.

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© 2009 Bradley Treeby and Ben Cox.