Study on Mass Health Examination of Osteoporosis

本研究的目的是建立一种高效、准确的骨质疏松症大规模筛查方法。Norland XR-26作为双能X线骨密度仪(DEXA)具有良好的准确度和精密度，但该系统测量脊柱前后位所需的时间太长，无法测量足够多的体检对象。我们对该系统进行了改进，所需时间缩短了30%。使用这种方法，每天可以进行50到60次骨密度(BMD)测量。此外，我们还研究了另一种方法，并选择超声骨密度仪(US)作为肿块检查的合适替代方法。约1300名女性考生接受了LUNAR A-1000US系统的测量。用这种方法，每天可以测量70名考生。超声法从跟骨的骨硬度难以准确掌握全身骨体积，但弥补了DEXA的不足，可用于筛查。因此，我们推荐一种以超声为主要检查手段，以地塞米松为辅助检查的骨质疏松症普查系统。通过该系统的大量检查，我们发现了有关骨密度或骨硬度与生活方式关系的知识，如年轻时的运动习惯归因于骨骼的良好状况。

The aim of this study was to establish the efficient and accurate method for mass-screening of osteoporosis. Norland XR-26 as the Dual Energy X-ray Absorptiometry (DEXA) system had excellent accuracy and precision, but the time required for the anterior-posterior spine measurement by this system was too long to measure the enough number of candidate for health examination. We modified this system, and required time was 30% shorten. With this method, it is possible to make 50 to 60 Bone Mineral Density (BMD) measurements per day. Furthermore we researched another method, and selected the ultrasound bone densitometry (US) as a suitable substitute method for mass examination. About 1300 female examinees were measured by Lunar A-1000 US system. With this method 70 examinees could measured per day. From the bone stiffness of the calcaneus in an ultrasound method, it is difficult to come to accurate grip with the systemic bone volume, but this method makes up for the disadvantages of DEXA and is of use for screenings. So that we recommend a mass screening system for osteoporosis in which the ultrasound method is made the primary examination and DEXA is made the secondary one. From the Mass examination by this system we found the knowledge about the relationship between BMD or bone stiffness and life style, for example that the exercise habit in young age were attribute to the good condition of bone.