眼眶容积的CT测量在眼眶爆裂性骨折中的应用

目的探讨眼眶容积的CT测量在眼眶爆裂性骨折中的应用。方法应用CT测量和计算机软件,对78例眼眶爆裂性骨折患者的患侧和对侧正常眼的眼眶分别行轴扫和冠状扫描,并计算双侧眼眶容积平均值之差。结果患眼眼眶容积比对侧键眼眼眶容积增加,其增加量与眼球内陷度接近正相关即眼眶容积增加1 ml,眼球内陷数约为0.9 mm。采用轴位和冠状位两种方法测量两侧眼眶容积的平均值之差分别为:眼眶下壁骨折为0.35 ml、2.251 ml,内壁骨折为3.06 ml0、.51 ml,内壁联合下壁骨折为3.64 ml、3.31 ml。行眼眶整复手术的患者患侧与健侧的眶容积差值的平均值为3.43 ml。结论眼眶内壁骨折可选择轴位扫描,下壁骨折可选择冠状位扫描,内壁联合下壁骨折选择两种扫描均可。外伤后早期进行眼眶容积测量,可预测发生眼球内陷的程度,为是否行手术治疗提供客观依据。

The application of orbital volume measuring by CT in orbital blowout fracture

Objective The application of orbital volume measuring by CT in orbital blowout fracture.Methods By CT measurements and computer software in 78 cases of orbital blowout fracture in patients with normal eye ipsilateral and contralateral eyes were scanning the row axis and coronal scans,and calculated the difference of the average values of bilateral orbital volume.Results The eye orbital volume on the ill side is bigger than the good side,the orbital volume increases 1ml,the degree of enophthalmos is about 0.9 mm.The differences of the average values of orbital volume using two different methods were 0.35ml and 2.251 ml in patients with blow out fracture of orbital floor,and differences of that were 3.06 ml and 0.51 ml in patients with medical wall fracture,differences of that were 3.64 ml and 3.31 ml in patients with medical and floor wall fracture,The bilateral orbital volume difference of the average values is 3.43 ml in patients with orbital reconstructive surgery.Conclusion To choose axial scanning in patients with floor wall fracture,to choose coronal scanning in patients with medical wall fracture,to choose both of two methods is rational in patients with medical and floor wall fracture.Early post-traumatic orbital volume measurements can predict the degree of enophthalmos occurred,and provide an objective basis for surgical treatment.