Hi,

Thank you for this useful tool for Photoacoustic Tomography. I was a new student in this field. I was thinking about the negative pressures of the first example 'Homogeneous Propagation Medium Example'. I'm confused about the computing results of the negative pressures when the initial pressure distributions are all positive. How do the negative pressures produce? I think it should be all positive when the initial pressures are all positive.

Thank you for your help.

Remy.