Experimental analysis of binary mixture model for ultrasound scattering from cancellous bone

Ultrasound experiments were performed to collect in vivo calcaneal measurements in different orientations and at different frequencies and the experimental data were used for the evaluation and analysis of broadband ultrasound backscatter coefficients of the binary mixture model for the concellous bone. The results of experiments first revealed that the broadband ultrasound backscatter coefficient does not increase beyond 5 MHz frequency in accordance with prior research studies but contrary to the Binary Mixture model´s cubic frequency dependence at all frequencies. Secondly, the experimental coefficients in different directions differ significantly. This is also contrary to the theoretical model´s indifference to different directions.