Buckingham S H, Jeffcott L B, Anderson G A, McCartney R N
Department of Veterinary Science, University of Melbourne, Victoria, Australia.
Med Biol Eng Comput. 1992 Jan;30(1):41-5. doi: 10.1007/BF02446191.
The in vivo precision of ultrasound velocity measurement and single photon absorptiometry for the assessment of equine bone quality is discussed. In vivo precisions for ultrasound velocity measurements were less than 0.5 per cent, whereas cortical cross-sectional area, compact bone density and modulus of elasticity were around 1 per cent, and bone mineral content and density were just over 2 per cent. Except for ultrasound velocity, substantial improvements could be achieved by taking the mean of five readings for each measurement. The long-term precision of the techniques was also high, with all precision values being less than 3 per cent. The possible sources of variation in ultrasound velocity measurements were also investigated. The method for combining ultrasonic and photon absorptiometric data for equine bone quality assessment has been proven to be highly accurate and precise. There appears to be no reason why the same principles cannot be applied with equal success to the noninvasive assessment of bone quality in humans.
本文讨论了超声速度测量和单光子吸收测定法在评估马骨质量方面的体内精度。超声速度测量的体内精度小于0.5%，而皮质横截面积、密质骨密度和弹性模量约为1%，骨矿物质含量和密度略高于2%。除超声速度外，每次测量取五次读数的平均值可显著提高精度。这些技术的长期精度也很高，所有精度值均小于3%。还研究了超声速度测量中可能的变异来源。已证明，将超声和光子吸收测定数据相结合用于评估马骨质量的方法具有很高的准确性和精确性。似乎没有理由不能将相同的原理同样成功地应用于人体骨质量的无创评估。
