Hi,

Thanks for this wonderful toolbox!

The k-Wave solves 3 first order equations (or second order wave equation for homogeneous media), which, at least in my opinion, is valid when the ambient density rho_0 is constant.

Therefore, I am wondering if you can solve the wave equation that models the sound speed, density and absorption heterogeneities. To my knowledge, it should be

where α(r) is the ultrasonic absorption distribution.

Thanks,

Chao

Edit: I don't know why the image does not show properly, but you can find it here:

http://img225.imageshack.us/f/86132079.jpg/ (ADMIN: Fixed - you need the direct image link)