眼球突出度的CT测量及其临床意义

目的探讨眼眶CT眼球突出度测量方法与Hertel眼球突出计测量方法之间的关系,及其对眼眶病患者眼球突出诊断中的意义。方法对42例临床资料完整的眼眶病患者的眼球突出度进行回顾性分析。所有病例均进行RB线横轴位2mm薄层螺旋CT扫描。选取眼球最大径层面,在图像工作站上测量其眼球突出度(CT眼突度)。与其临床上采用Hertel眼球突出计测量所得眼球突出度(Hertel眼突度)进行统计学分析。结果两种方法测量眼突度有差异,CT眼突度显著高于Hertel眼突度(P<0.001);两种方法之间有直线相关关系(r=0.864,P<0.001);而两种方法对两眼眼突差的测量,差异无统计学意义(P>0.05)。结论Hertel眼球突出计在测量眼眶病双眼眼突差中常规使用,具有简便可靠的特点。而眼眶CT为眼球突出的测量提供了更直观、准确的数据,有一定的临床价值,可以作为异常眼球突出更精确测量的补充参数,尤其客观地反映了异常眼球突出的程度及提供了治疗前后的影像。

CT measurement of exophthalmos of orbital patients and its clinical significance

Objective To investigate the relationship between CT and Hertel exophthalmometer to the orbital patients, and to study the diagnostic value of the means of CT. Methods Axial ocular CT scan was performed in 42 orbital patients. On the plane where the biggest diameter of the eyeballs was selected, the exophthalmos data were measured and were analyzed with the data by the Hertel exophthalmometer. Results The data from two methods in measurement of exophthalmos are different; CT exophthalmos degree is significantly higher than that of Hertel(P<0.001). The former is linear with the later(r=0.864,P<0.001). But there is no statistic significance as comparing the exophthalmos difference of CT between the eyes of each ones with that of Hertel. Conclusions While Hertel exophthalmometer is reliable in diagnosing the exophthalmia, CT provides more direct and precise data and has its clinical consequence. As the supplementary parameter in measurement of exophthalmos data, CT reflects the symptom and degree of exophthalmia and offers the image after the treatment.