ined using a Gaussian distribution. In this example, an acoustic simulation is first performed using <code><a href="kspaceFirstOrder2D.html">kspaceFirstOrder2D</a></code> to calculate the volume rate of heating from a focused ultrasound transducer in 2D. This is then used as an input to a thermal simulation to calculate the temperature map and ablated tissue volume. The volume rate of heat deposition can be approximated using the plane wave relationship <code>Q = alpha * p^2 / (c0 * rho0)</code>. For nonlin