Fauchet M, Andrieux P, Roux C, Sebert J L
Compiègne Technolgy Unit, France.
Rev Rhum Engl Ed. 1998 Apr;65(4):257-66.
We evaluated a new contact ultrasound device, developed and manufactured in France, for measuring broadband ultrasound attenuation at the calcaneus. We first studied the influence on measurement results of a number of parameters including the nature of the coupling agent, heel position, transducer temperature, and foot vasodilation. We then determined the reproducibility of the measurements (2.14 +/- 1.07% in the medium-term) and established reference values in women (n = 612) and men (n = 106). Broadband ultrasound attenuation decreased between 25 and 85 years of age by 34% in women and 17% in men. Sensitivity and specificity for detection of decreased bone mass at the calcaneus were 85.5% and 81.5%, respectively. Sensitivity and specificity of the measurement at the calcaneus as compared to the lumbar spine were 90.7% and 89.1%, respectively. This unit intended for screening purposes is very easy to use, and the measurements it provides are immediately available. It can be expected to help determine the optimal strategy for use of ultrasound in the management of osteoporosis.
我们评估了一款在法国研发制造的新型接触式超声设备，用于测量跟骨处的宽带超声衰减。我们首先研究了包括耦合剂性质、足跟位置、换能器温度和足部血管舒张等多个参数对测量结果的影响。然后我们确定了测量的可重复性（中期为2.14±1.07%），并建立了女性（n = 612）和男性（n = 106）的参考值。25至85岁之间，女性的宽带超声衰减下降了34%，男性下降了17%。跟骨处骨量减少检测的敏感性和特异性分别为85.5%和81.5%。与腰椎相比，跟骨测量的敏感性和特异性分别为90.7%和89.1%。这款用于筛查目的的设备使用非常简便，所提供的测量结果即时可得。有望帮助确定在骨质疏松症管理中使用超声的最佳策略。
