Department of Physics, Kangwon National University, Chuncheon 24341, Republic of
J Acoust Soc Am. 2019 May;145(5):EL393. doi: 10.1121/1.5107435.
The ultrasonic backscatter coefficient and the exponent n (frequency dependence of the backscatter coefficient) were measured in 24 bovine femoral trabecular bone samples. The binary mixture model for ultrasonic scattering from trabecular bone was applied to predict the variations of the ultrasound parameters with the bone volume fraction (BV/TV) and the trabecular thickness (Tb.Th) in trabecular bone. The backscatter coefficient exhibited significant, positive correlations with the BV/TV (R = 0.82) and the Tb.Th (R = 0.79). In contrast, the exponent n was found to be significantly, negatively correlated with the BV/TV (R = -0.77) and the Tb.Th, (R = -0.71).
在 24 个牛股骨小梁骨样本中测量了超声背散射系数和指数 n（背散射系数的频率依赖性）。应用双相混合模型来预测超声参数随小梁骨骨体积分数（BV/TV）和小梁厚度（Tb.Th）的变化。背散射系数与 BV/TV（R=0.82）和 Tb.Th（R=0.79）呈显著正相关。相比之下，指数 n 与 BV/TV（R=-0.77）和 Tb.Th（R=-0.71）呈显著负相关。
