Nielsen S P, Bärenholdt O, Munck O
Scand J Clin Lab Invest. 1975 May;35(3):197-203.
By application of a power function model, fractional intestinal calcium absorption was investigated with a new technique involving whole-body counting after successive oral and intravenous administration of standard doses of 47Ca. The fractional calcium retention 7 days after the oral load of 47Ca was also measured. Fractional calcium retention averaged 30.3% in normal subjects and 11.5% in 11 patients with intestinal malabsorption. In the same groups fractional calcium absorption averaged 46.6% and 16.4%, respectively. Fractional calcium retention and intestinal calcium absorption were significantly correlated to body surface area, and there was a well-defined relation between fractional retention and absorption of calcium...
通过应用幂函数模型，采用一种新技术对小肠钙吸收分数进行了研究，该技术涉及在连续口服和静脉注射标准剂量的47Ca后进行全身计数。还测量了口服47Ca负荷后7天的钙保留分数。正常受试者的钙保留分数平均为30.3%，11例肠道吸收不良患者的钙保留分数平均为11.5%。在同一组中，钙吸收分数分别平均为46.6%和16.4%。钙保留分数和小肠钙吸收与体表面积显著相关，并且钙保留分数与吸收之间存在明确的关系……
