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用单光子吸收测定仪对４４例整月龄（４～９月胎龄）正常胎儿股骨中段的骨矿含量进行测定。结果表明：骨矿含量（ｂｏｎｅｍｉｎｅｒａｌｃｏｎｔｅｎｔ，ＢＭＣ）、骨宽度（ｂｏｎｅｗｉｄｔｈ，ＢＷ）和骨密度（ＢＭＣ／ＢＷ）随胎龄的增加而增加。ＢＭＣ、ＢＭＣ／ＢＷ在４～７月胎龄为加速增长期，７月胎龄以后为迟缓增长期；ＢＷ在４～５月胎龄增长速度快，５月胎龄以后较慢、但仍以相对稳定的速度增长。本研究还证实胎儿期骨矿含量各参数无性别差异，也无左、右侧差异。ＢＭＣ，ＢＭＣ／ＢＷ与体重、顶臀长、股骨长、胎龄呈正相关，而且其曲线相关优于其直线相关，并推导出其回归方程。ＢＷ与胎龄呈直线相关。骨矿含量是反映胎儿生长发育的一项客观指标。
Bone mineral content in the middle part of normal fetus femur of 44 full-term (4 ~ 9-month-old) fetuses was measured by single-photon absorption detector. The results showed that bone mineral content (BMC), bone width (BW) and bone mineral density (BMC / BW) increased with the increase of gestational age. BMC and BW increased from 4 to July in gestational age, and slowed to increase in July after gestational age. BW increased in gestational age from April to May, but slowed in May after gestational age Relatively steady speed growth. The study also confirmed that the fetal bone mineral content of the parameters of no gender differences, there is no left and right differences. BMC and BMC / BW were positively correlated with body weight, top hip length, femur length and gestational age, and their correlations were better than those of their straight lines. The regression equation was also deduced. BW and gestational age were linearly related. Bone mineral content is an objective indicator of fetal growth and development.