Mohamed Moustafa M, Shaat Laila T, Mahmoud Ahmed Nashaat
Biophysics and Medical Engineering, Medical Research Institute, Alexandria University, El-Hadara, Alexandria 21561, Egypt.
IEEE Trans Ultrason Ferroelectr Freq Control. 2003 Mar;50(3):279-88. doi: 10.1109/tuffc.2003.1193621.
Ultrasonic velocity is determined in a number of bovine cancellous (spongy) bone samples by using a double-probe-through-transmission ultrasonic pulse technique. The ultrasonic velocity, total mineral content, bone density, and solid volume fraction of the specimen were determined. The relation between fast velocity and each of the other parameters was examined to explore the best correlation using linear, logarithmic, power, and exponential relationships. There is a strong positive relationship between ultrasonic velocity and each of the other parameters. The exponential model fits the data better than the linear model, logarithmic model, and power model. Biot's theory also is used to predict the velocity of ultrasound in the demineralized bone. It is shown that the transmission of ultrasonic pulses in the cancellous bone samples can be adequately described using Biot's theory. The different parameters occurring in the Biot theory have been measured independently, and the calculation has been compared with measured velocity of water-saturated bone samples. The correlation coefficients for regression analysis between the experimental velocities and those predicted by Biot's theory are greater than 0.86.
通过使用双探头穿透传输超声脉冲技术，在多个牛松质（海绵状）骨样本中测定超声速度。测定了样本的超声速度、总矿物质含量、骨密度和固体体积分数。研究了快速速度与其他每个参数之间的关系，以使用线性、对数、幂和指数关系探索最佳相关性。超声速度与其他每个参数之间存在很强的正相关关系。指数模型比线性模型、对数模型和幂模型更适合数据。比奥理论也用于预测脱矿骨中的超声速度。结果表明，使用比奥理论可以充分描述超声脉冲在松质骨样本中的传输。独立测量了比奥理论中出现的不同参数，并将计算结果与水饱和骨样本的测量速度进行了比较。实验速度与比奥理论预测速度之间的回归分析相关系数大于0.86。
