定量CT用于测量颅骨力学强度的实验研究

AN EXPERIMENTAL STUDY ON MEASUREMENT AND PREDICTION OF SKULL BONE STRENGTH BY MEANS OF QUANTIT ATIVE COMPUTED T0MOGRAPHY

利用尸体颅顶骨标本80例，在用理化方法测定骨中水、盐及有机质成份比例和半静态抗弯、抗压力学实验的基础上，将标本首次进行矿物质含量（密度）的定量CT测定。运用统计学方法对定量CT测定值和骨质的抗弯、抗压强度之间的关系进行了分析。实验结果表明，颅顶骨抗弯强度与颅项骨松质的矿物质含量和颅项骨抗压强度与颅顶骨内板皮质矿物质含量之间存在较好的正相关，其相关系数分别为O．51和O．34（P＜0.01）。

This investigation determined the content of water,organic components and mineral of 80 skullparital bones from cadavers. Basing on semistatic test of anti-bending and anti-compressive mechanicsthe bone mineral contents were measured by quantitative computed tomogrophy. The relationship be-tween bone mineral contents and the mechanical properties was showed. The results suggested thatthere are positive interrelationship between anti-bending strength and skull spongiosa and betweenanti. compressive strength and skull compacta interna (r = O. 51 and O. 34, P< O' Ol respectively ).The results and their applications were discussed.