The status of osteoporosis in 54 volunteers was measured by Single Photon Absorptiometry and measurement of the X-ray film with a self-control trial design.
用单光子吸收扫描与X线摄片计测法，对54例测试者的骨质疏松情况进行了自身对照测定和比较。
It is feasible that to use CCD device and image processing system in measurement of the modulation transfer function (MTF) of X-ray film and luminescent screen.
本文论证了利用CCD测定X射线胶片和增感屏调制传递函数的可行性，并给出了一种适用于CCD测试数据的处理方法。
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