不同年龄正常眼眶容积的CT测量  

Study on the growth of orbital volume in ind ividuals at different ages by computed tomography

作　　者：陈哲[1,2] 郑晓华[1] 谢宝君[1] 袁家骥[1] 喻汉华[1] 李守红[1] 

机构地区：[1]武汉大学人民医院放射科 [2]郑州大学第二附属医院放射科,450014

出　　处：《中华眼科杂志》2006年第3期222-225,共4页Chinese Journal of Ophthalmology

摘　　要：目的探讨正常眼眶容积的发育规律,建立人群眼眶容积计算机体层成像(CT)测量的正常参考值。方法选择123例眼部无阳性病征的患者,男性64例、女性59例,根据年龄分为5组,应用螺旋CT轴位、冠状位扫描及重建技术,在重建图像上逐层测量眼眶面积、眼球的最大横径和前后径,分别计算眼眶容积和眼球体积,分析眼眶容积与年龄、性别、眼球体积的关系。结果眼眶容积在各年龄阶段左右对称,20岁之前眼眶容积增长迅速,大约男性17岁、女性13岁时平均眼眶容积分别为23.54、21.75ml,达正常成年人眶容积的95%,正常成人眼眶容积男性大于女性,男女性平均眼眶容积分别为(25.04±2.37)ml、(22.89±2.67)ml。眼眶容积与年龄呈显著正相关(P<0.05),但14岁之前男女性眼眶容积比较差异无统计学意义(P=0.315);眼球发育与眼眶容积发育相适应;眼球/眼眶比值随年龄增长由0.40降至0.26。结论正常人眼眶容积左右对称,其大小与年龄、性别有关,且20岁之前增长迅速,40岁之后仍缓慢增长。(中华眼科杂志,2006,42:222-225)Objective To study the growth aspects of orbital volume and to establish the normal value of orbital volume by computed tomography （CT）. Methods One hundred and twenty three individuals without eye diseases （64 males, 59 females） were divided into 5 groups according to the age, Orbital volume and length of horizontal transverse axis and anterior-posterior axis of the eye were measured at different levels in original or reconstructive CT images. The relationship between orbital volume and age, gender and eyeball volume was analyzed. Results There was no difference between the left and right orbital volume in all age groups. Orbital volume grew rapidly before 20 years of old, Mean orbital volume in males aged 17 and females aged 13 was 23.54 and 21.75 ml, respectively, which reached 95% of the adult orbital volume. In normal adult, orbital volume in the male was larger than that of the female. The mean orbital volume of adult male and female was （25.04 ± 2. 37） ml and （22. 89 ± 2. 67 ） ml, respectively. A strong linear correlation was presented between the age and orbital volume （ P 〈 0. 05 ）. The difference of orbital volume between the male and female was statistically non-significant before 14 years old （P = 0. 315 ）. The growth of eyeball volume was consistent with that of the orbital volume, the ratio of eyeball/orbit volume was decreased with age from 0. 40 to 0. 26. Conclusions There is no difference between the right and left orbital volume. Orbital volume is correlated with age and gender. Orbital volume grows rapidly before 20 years of old and still grows slowly after 40 years old.

关 键 词：眼眶 人体测量术 体层摄影术 X线计算机 

分 类 号：R816.97[医药卫生—放射医学]