Langton C M, Ali A V, Riggs C M, Evans G P, Bonfield W
Applied Physics Department, Sheffield City Polytechnic, UK.
Clin Phys Physiol Meas. 1990 Aug;11(3):243-9. doi: 10.1088/0143-0815/11/3/007.
A portable system using a direct contact for the measurement of ultrasonic velocity and broadband attenuation in bone is described (contact ultrasonic bone analyser, CUBA). Soft-tissue compensation is performed using an ultrasonic pulse-echo technique. CUBA has been successfully validated using reference materials, the precision of velocity and broadband attenuation measurements being typically 0.2% and 0.5% respectively. The clinical reproducibility has been assessed on the equine third metacarpal bone. The reproducibility of velocity measurement is typically 0.5% for cortical bone and 1% for cancellous bone. For broadband attenuation the reproducibility is typically 7% for cortical bone and 6% for cancellous bone. The lower reproducibility of the attenuation data is attributed to the high sensitivity to variations in the material properties of bone with small changes in transducer positioning. Coupling difficulties through an intact equine coat have been overcome and the system may now be assessed in the clinical environment, in both human and animal populations.
描述了一种使用直接接触方式测量骨中超声速度和宽带衰减的便携式系统（接触式超声骨分析仪，CUBA）。采用超声脉冲回波技术进行软组织补偿。CUBA已通过参考材料成功验证，速度和宽带衰减测量的精度通常分别为0.2%和0.5%。已在马的第三掌骨上评估了临床可重复性。皮质骨速度测量的可重复性通常为0.5%，松质骨为1%。对于宽带衰减，皮质骨的可重复性通常为7%，松质骨为6%。衰减数据的可重复性较低归因于换能器位置稍有变化时，对骨材料特性变化的高敏感性。已克服了通过完整马皮耦合的困难，现在可以在人类和动物群体的临床环境中对该系统进行评估。
