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Ultrasound penetration depth?

  1. Mar 19, 2015 #1
    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?
     
  2. jcsd
  3. Mar 20, 2015 #2

    sophiecentaur

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    Gold Member

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