Single photonabsorptiometry (SPA) is one of noninvasive techniques, with which bone mineral content in animals or human can be measured in vivo.
单光子吸收法（SPA）是活体测定人或动物骨矿含量的非侵入性方法之一。
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The status of osteoporosis in 54 volunteers was measured by Single PhotonAbsorptiometry 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。
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Objectives To improve the accuracy of diagnosis of osteoporosis and promote the clinical use of dual-energy x-ray photonabsorptiometry for assessment of osteoporosis.