Measurement of Bone Mass from Ultrasonic Transmission Time.∗
Measurement of Bone Mass from Ultrasonic Transmission Time.∗
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通过超声波传输时间测量骨量。*
DOI：
10.3181/00379727-123-31467
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发表时间：
1966
影响因子：
--
通讯作者：
Ben Graham
中科院分区：
文献类型：
--
作者：
C. Rich;Eli Klinik;Ray Smith;Ben Graham
当一束脉冲声在两个相隔固定距离的换能器之间通过时，传播时间取决于声音在分隔它们的介质中的速度。由于软组织中的声速与骨中的声速相似且比骨中的声速小得多，因此可以使用记录传输时间变化的仪器来确定完整肢体中存在的骨质量。当测量皮质骨和肱骨样本的兔子（无论是完整的或剥离的软组织）有很好的协议之间的预测和随后的化学测定质量的钙存在。
Summary When a beam of pulsed sound is passed between two transducers a fixed distance apart, the transit time depends upon the velocity of sound in the medium separating them. Because the velocities of sound in soft tissues are similar and much less than in bone, an instrument which records changes in transmission time can be used to determine the mass of bone present in an intact limb. When measurements were made on samples of cortical bone and of the humerus of a rabbit (either intact or stripped of the soft tissues) there was good agreement between the predicted and subsequently chemically determined mass of calcium present.