【摘要】 目的 探讨多层螺旋CT(MSCT)在胸骨发育与年龄相关性的价值。方法 回顾性分析428例1月～19岁11月因肺部感染、异物吸入、其他原因接受胸部MSCT检查的患者资料。观察胸骨柄、各胸骨体节段和剑突中存在的骨化中心及其数量，评估骨化中心之间的垂直水平融合及其与年龄的相关性。结果 428例患者中，胸骨柄有单一骨化中心383例(89.5%),2～4个骨化中心45例(10.5%);胸骨体含有2个节段10例(2.3%),3个节段229例(53.5%),4个节段189例(44.2%)。剑突缺乏190例(44.4%),单一骨化中心234例(54.7%),2个骨化中心4例(0.9%)。胸骨柄与胸骨体间融合(r=0.283,P<0.001)、胸骨体与剑突间融合(r=0.219,P=0.001)均与年龄呈低度正相关，胸骨体融合与年龄呈中度正相关(r=0.634,P<0.001)。结论 MSCT能够评价胸骨的发育，胸骨体垂直融合与年龄具有较好的相关性。更多还原

【Abstract】 Objective To explore the value of multi-slice spiral CT(MSCT) in the correlation between sternum development and age.Methods The data of 428 patients aged from January to 19 years and November who underwent chest MSCT for pulmonary infection,foreign body inhalation and other reasons were analyzed retrospectively.To observe the ossification centers and their numbers in the manubrium,each individual segment of the mesostrnum and the xiphoid process,and to evaluate the correlation between the vertical and horizontal fusion of ossification centers and age.Results Among the 428 participants,383(89.5%) subjects had an ossification center and 45(10.5 %) subjects had 2-4 ossification centers in the manubrium.Ten cases(2.3%) had 2 segments,229 cases(53.5%)had 3 segments,and 189 cases(44.2%) had 4 segments in the mesostrnum.There were 190 cases(44.4%) without xiphoid process,234 cases(54.7%) with single ossification center,and 4 cases(0.9%) with 2 ossification centers.The fusion of the manubrium and mesostrnum(r=0.283,P< 0.001) and the fusion of the mesostmum and xiphoid(r=0.219,P=0.001) were low positively correlated with age,while the fusion of mesostrnum was moderate positively correlated with age(r=0.634,P<0.001).Conclusion The development of the sternum could be evaluated by MSCT,and the vertical fusion of the mesostrnum is well correlated with age.更多还原