Application of Multi-slice Spiral CT Scan and Reconstruction in Diagnosis of Eye Trauma-induced Orbital Wall Fracture

Objective To explore the value of multi-slice spiral CT scan and reconstruction in the diagnosis of eye trauma-induced orbital wall fracture.Methods Thin-slice CT scan was performed with 16-slice spiral CT scanner in 36 cases of ocular trauma-induced orbital wall fracture.Volume rendering(VR),shaded surface display(SSD) and multi-planar reconstruction(MPR) were made at the Extended Brilliance Workspace(EBW,V4.5.2.4031) workstation.Results Among the 36 patients,burst fractures were found in 17,direct fractures in 11 and compound fractures in 8.Of the 45 fractures,medial orbital wall fractures were found in 22,orbital floor fractures in 8,supraorbital wall fractures in 8,lateral orbital wall fractures in 5,and orbital apex and optic canal fractures in 2.In addition,single-wall fractures were found in 17 patients,double-wall fractures in 11,three-wall fractures in 6 cases,and four-wall fractures in 2.Conclusion Multi-slice spiral CT scan and reconstruction can improve the diagnosis of orbital wall fracture and provide a more intuitive understanding of the actual size,shape,location of orbital wall fracture and its anatomical relationship to surrounding structures in three-dimensional space.Therefore,multi-slice spiral CT scan and reconstruction may provide a reliable diagnostic imaging basis for clinical treatment of orbital wall fracture.