放射吸收法(RA)骨密度(BMD)测定原理及关键点

Principles and Key Points of Qualitifying BMD in RA

目的:探讨分析放射吸收法(RA)骨密度(BMD)测定原理及关键点。方法:综合运用数学、物理工具,根据X线成像原理进行理论推导计算,分析放射吸收法骨密度测定关键点。结果:根据公式推导,详细解说如何建立铝楔厚度-灰度特性曲线。结论:基于放射吸收法骨密度测量不仅成本低廉,而且应用方便,具有很高的实用价值和广泛的应用前景。铝楔作为参照物在RA骨密度测量起关键作用。

Objective:To explore the principles and key point of bone mineral density measurement in radiography absorption method.Methods:The mathematics and physics were applied in the study of key points in BMD based on X-ray imaging theory.Results:According to the formula,the thickness-gray level curve of aluminum wedge was introduced in details how to established.Conclusions:The bone mineral density measurement method based on radiography absorption is not only cheap but also convenient,so it will be applied broad...