What Factors Affect Ultrasound Penetration Depth?

[BobbyBrown]

Hi,

I want to calculate the penetration depth of some different frequency ultrasound transducers. I know that it depends on the attenuation of the medium but not sure where these types of figures will be hiding. I assume that once the dB lost for the depth is equal to the dB generated, this is the maximum penetration depth.Thanks
Bobby?

 

[sophiecentaur]

I googled 'ultrasound transmission loss' and there were many hits. This wiki hit could possibly help you.

once the dB lost for the depth is equal to the dB generated

I am not sure what you mean by this. There is no "maximum penetration depth". The depth at which a given level of power density can be measured will depend upon transmitted power, a coupling factor and then the transmission loss (dB per metre times distance). More input power means greater useful penetration depth.