计算机X 线片骨放射密度法在蛋鸡骨质 疏松症研究中的应用

应用灰度对比法的原理建立了计算机X线片蛋鸡骨放射密度法。结果表明，铝阶厚度与灰度之间呈显著的线性关系（P〈0．01，r=0．997），铝阶厚度变化可准确反映蛋鸡骨骼骨量变化，不同曝光条件对骨量值无明显的影响（P〉0．05）。该方法简便，精确，重复性好，经济，为研究蛋鸡骨质疏松症提供重要的检测手段。

Application of the bone radiography density method with computer- assisted X- ray film to osteoporosis research in hens

The bone radiography density method with Computerassisted X-ray film was established in layers according to grayscale-contrast theory.The results showed that Aluminium wedge thickness had good linear relationship with its grayscale(P<0.01,r=0.997),the change of Aluminium wedge thickness could reflect variation of bone volume exactly,different exposure parameters had not significant effects on value of bone volume(p>0.05).This method plays an important role in the cage layer osteoporosis research,with convenient,accurate,economical and good repetition.