64排螺旋CT多平面重建和容积再现图像在面中部复杂骨折中的临床应用

Clinical application of multiplanar reconstruction and volume rendering with 64-slice spiral CT in the complex midfacial fracture

目的:探讨64排螺旋CT多平面重建(MPR)及容积再现(VR)图像在面中部复杂骨折中的临床应用价值。方法:对46例面中部复杂骨折患者进行64排螺旋CT薄层扫描,容积数据传送到工作站进行MPR和VR三维成像。结果:46例面中部366处骨折,MPR图像对面中部各部位骨折的显示率为100%;VR图像对颧骨、颧弓、下颌骨骨折的显示率为100%,对上颌骨骨折的显示率为94.3%、眼眶骨折为93.2%、筛骨骨折为13.0%、蝶骨骨折为55.6%,平均显示率为86.3%。VR图像能够通过图像旋转、切割等功能从不同方向观察骨折的位置、范围、骨碎块的移位,了解骨折线的走行及外伤所致的畸形情况。结论:MPR结合VR成像对面中部骨折的诊断治疗具有很高的临床应用价值。64排螺旋CT图像能提高对深部细微骨折的显示。

Objective：To evaluate the value of clinical application of multiplanar reconstruction （MPR） and volume rendering （VR） with 64-slice spiral CT in the complex midfacial fracture. Method： Forty-six patients with the complex midfacial fracture were examined with 64-slice spiral CT, then MPR and VR were performed in work station. Result：Of 46 patients, there are 366 fractures. MPR imaging clearly showed all（the rate were 100 %0）. VR imaging could show all zygomatic fracture and mandidular fracture（the rate were 100%）, but the showed rate were 94.3% in maxillary fracture, 93.2% in orbital fractures, 13.0 % in ethmoid fractures, 55.6% in sphenoid bone fracture,the mean rate were 86.3 %. VR imaging could show the fracture location, range, fragment displacement from different direction by rotating picture and demonstrate the course of fracture line and deformities caused by fracture. Conclusion： MPR imaging combination with VR imaging has important clinical value in diagnosing the complex midfacial fracture. 64 slice CT may improve displaying tiny and deep fracture.