通过双光子吸收法测定全身骨矿物质和去脂体重。II. 与中子活化分析法测定的全身钙含量的比较。
Total body bone mineral and lean body mass by dual-photon absorptiometry. II. Comparison with total body calcium by neutron activation analysis.
作者信息
Mazess R B, Peppler W W, Chesnut C H, Nelp W B, Cohn S H, Zanzi I
出版信息
Calcif Tissue Int. 1981;33(4):361-3. doi: 10.1007/BF02409456.
Total body bone mineral (TBBM) was measured in vivo using dual-photon absorptiometry (DPA) in 10 subjects. The total body calcium (TBCa) was measured in the same subjects using neutron activation analysis. The correlation between the two methods was very high (r greater than 0.99) and the standard error of estimate was low. The TBCa relative to TBBM was about 39%. The two noninvasive methods provided nearly identical indications of skeletal mass, but the radiation exposure with DPA was 500 to 5000 times smaller (0.6 mrem vs 300 to 3000 mrem). The radius shaft bone mineral content was highly correlated with the TBBM (0.97) and the TBCa (0.98) and could be used to estimate the latter variables with errors (1 SEE) of 9% and 6%, respectively.
采用双光子吸收法（DPA）对10名受试者进行了体内全身骨矿物质（TBBM）测量。使用中子活化分析法对同一批受试者进行了全身钙（TBCa）测量。两种方法之间的相关性非常高（r大于0.99），估计标准误差较低。TBCa相对于TBBM约为39%。这两种非侵入性方法对骨骼质量的指示几乎相同，但DPA的辐射暴露量要小500至5000倍（0.6毫雷姆对300至3000毫雷姆）。桡骨干骨矿物质含量与TBBM（0.97）和TBCa（0.98）高度相关，可分别用于估计后两个变量，误差（1个标准误）分别为9%和6%。
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