用双加速度计在体和离体测试了骨组织的声传递函数。结果表明:骨组织具有声低通滤波特性,且可产生多种振动模式。声传递函数的特征因人而有较大差异,但同一对象左右两肢的测试结果可以对照。声传递函数的主频能很好地反映骨的缺陷大小,可用于诊断骨病和估计骨折愈合程度。 The acoustic transmission function of bone tissue was tested both in vivo and ex vivo with a double accelerometer. The results show that the bone tissue has acoustic low-pass filter characteristics, and can produce a variety of vibration modes. The characteristics of the acoustic transfer function vary greatly from one person to another, but the test results of the left and right limbs of the same subject can be compared. The dominant frequency of acoustic transfer function can well reflect the size of bone defects, which can be used to diagnose bone disease and estimate the degree of fracture healing.