Pohlhammer J, O'Brien W D
J Acoust Soc Am. 1981 Jan;69(1):283-5. doi: 10.1121/1.385349.
The difference between literature values of ultrasonic attenuation and absorption coefficients, defined as the scatter coefficient, was related to percent wet weight collagen concentration for brain, heart, liver, kidney, and tendon, in the range of 0.7 to 7 MHz. The comparison shows that as the ultrasonic frequency increases, the scatter coefficient increases, and the dependence of scattering upon collagen concentration decreases.
