人体跟骨宽带超声衰减参数测量方法的研究

Study on the Method of Measuring Broadband Ultrasonic Attenuation in Human Calcaneus

探讨超声测量骨钙密度的重要参数—宽带超声衰减(BUA)的测量方法,提出了用脉冲信号作为发射信号,通过数值平均法提高信噪比,采用最小二乘法,提取宽带超声衰减参数。实验结果表明,该方法简单有效,可以准确地从接收的超声波信号中,提取宽带超声衰减参数。

A measurement method for bone density broadband ultrasonic attenuation （BUA） was proposed, which send and received seve ral pulses, averaged them for better SNR and linear fitting in a least- squares sense was done and a parameter was output. Results show that our method is simple and effective and can extrat BUA from ultrasound signals exactly.