Frequency-dependent attenuation and backscatter coefficients in bovine trabecular bone from 0.2 to 1.2 MHz

摘要

The frequency-dependent attenuation and backscatter coefficients were measured in 25 bovine femoral trabecular bone samples from 0.2 to 1.2 MHz. When the average attenuation coefficient was fitted to a nonlinear power law (f) = 0 + 1 f n, the exponent n was found to be 1.65. In contrast, the average backscatter coefficient was fitted to a power law (f) = 1 f n and the exponent n was measured as 3.25. The apparent bone density was significantly correlated with the parameter 1 (0.2-0.7 MHz: r 0.852, 0.6-1.2 MHz: r 0.832) as well as the backscatter coefficient (0.5 MHz: r 0.751, 1.0 MHz: r 0.808).