http://www.k-wave.org/forum/topic/power-law-absorption-modelling Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:39:09 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/power-law-absorption-modelling#post-8666 Tue, 15 Nov 2022 07:59:49 +0000 Bradley Treeby 8666@http://www.k-wave.org/forum/ <p>Hi LL,</p> <p>You can use the function <code>neper2db</code> to check the calculation.</p> <p>Brad </p> http://www.k-wave.org/forum/topic/power-law-absorption-modelling#post-8665 Tue, 15 Nov 2022 05:10:19 +0000 LL 8665@http://www.k-wave.org/forum/ <p>Hi,Brad.<br /> When I set the frequency to 10MHz and I found that the absorption coefficient of water is 0.25Np/m, now I want to convert it to [dB/(MHz^y cm)].<br /> alpha_power=1.1,Would be the correct value for medium.alpha_coeff in [dB/(MHz^y cm)] can be obtained with the conversion function : alpha_coeff=0.25*8.686/100/10^1.1 ?</p> <p>Kind regards<br /> LL </p> http://www.k-wave.org/forum/topic/power-law-absorption-modelling#post-8652 Tue, 08 Nov 2022 10:30:41 +0000 Bradley Treeby 8652@http://www.k-wave.org/forum/ <p>You could take a look in the <a href="https://itis.swiss/virtual-population/tissue-properties/database/">https://itis.swiss/virtual-population/tissue-properties/database/</a>. </p> http://www.k-wave.org/forum/topic/power-law-absorption-modelling#post-8633 Tue, 25 Oct 2022 03:05:52 +0000 LL 8633@http://www.k-wave.org/forum/ <p>In the ultrasound simulation, how to query the value of high frequency ultrasound attenuation constant α0 [dB/(MHz cm)]in different tissues </p>