眼眶爆裂性骨折软组织的CT改变

The soft tissue changes on CT scan in orbital blowout fracture

目的分析眼眶爆裂性骨折软组织的CT改变。方法应用眼眶CT冠状位层面扫描，结合横轴位和矢状重建层面，分析眼眶内各种软组织的改变。结果眼外肌除与周围有粘连和嵌顿外，还可见自身有形状、厚度、位置、长轴旋转等改变；内壁骨折极少引起内直肌嵌顿，下壁骨折中下直肌嵌夹及疝出则常见；未成年人下直肌嵌夹及疝出较成人常见；CT横轴位和冠状位，以及矢状重建在观察软组织变化中价值不同。结论眼眶爆裂性骨折软组织改变是多样的，CT冠状位层面对观察该病软组织，特别是眼外肌改变有重要价值。

Objective To investigate the soft tissue changes on CT scan in orbital blowout fracture. Methods Applied CT scan, especial coronal scanning,binding horizontal scanning and anteroposterior axes recoustitution,analyzed the changes of soft tissue in orbital blowout fracture. Results The changes of extraoeular muscles were not only the adhension with surrounding and incarceration with the fracture, but also the aspects themselves,appearanee,location,thickness,macroaxis turning, and so on; Incarceration and herniation were few in medial orbital wall fracture,but often in orbital floor fracture; Incarceration and herniation were more frequently in children than in adults;Coronal scanning,horizontal scanning and anteroposterior axes reeonstitution had the different value. Conclusions CT scan, especial coronal scanning, was useful to investigate the soft tissue changes in orbit blowout fracture.