he reconstruction</h2>
    
<p>A plot of the initial pressure distribution and the reconstructed distribution using time-reversal are shown below (the three displayed image planes intersect at the centre of ball shown above). The plot scale for the reconstructed image has the plot limits reduced by a factor of 20.</p>

<img vspace="5" hspace="5" src="images/example_pr_3D_tr_spherical_sensor_02.png" style="width:560px;height:420px;" alt="">
<img vspace="5" hspace="5" src="images/example_pr_3D_tr_spherical_se