目的评价胫骨定量超声（QUS）和双能X线吸收法（DXA）在骨密度（BMD） 测量和骨质疏松（OP）诊断中的一致性。
Objective To evaluate consistency of bone mineral density(BMD) measurement and osteoporosis(OP) diagnosis between tibial quantitative ultrasonometry(QUS) and dual energy X-ray absorptiometry(DXA).
这表明超声波测量仪主要测量骨的结构变化，而骨密度测量仪则是测量骨量的变化。
Calcaneus ultrasound is used mainly for determining change in bone structure and DEXA mainly for determining change in bone mass.
方法对2 80例不同孕期的孕妇用超声骨密度测定仪测量跟骨骨密度（BMD） ，同期选择30例正常健康非孕期妇女做对照组。
Methods 280 cases gravidas in different gestation were determined in calcaneum bone density by using the apparatus. 30 cases normal healthy non-pregnant women were selected as the control group.
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