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目的:探讨16层螺旋CT在颌面部多发骨折中的应用价值。方法:20例颌面部外伤病例,均行16层螺旋CT扫描和二维及三维重建,扫描层厚3 mm,重建方法包括多平面重建法(MPR)、表面阴影显示法(SSD)和容积再现法(VRT),将二维和三维图像进行对照分析和验证。结果:上、下颌骨骨折、颧骨骨折并移位三维图像显示明显优于二维图像,筛骨、蝶骨、腭骨等中深面部骨折二维图像显示更清晰。结论:二维图像仍是诊断颌面部骨折最根本依据,三维重建的优势在于对复杂、粉碎骨折的多方位立体显示,清晰显示病变的空间解剖关系。
Objective: To explore the value of 16-slice spiral CT in the diagnosis of maxillofacial multiple fractures. Methods: Twenty cases of maxillofacial trauma were performed 16-slice spiral CT and 2D and 3D reconstruction respectively. The reconstruction thickness was 3 mm. The reconstruction methods included multiplanar reconstruction (MPR), surface shadow display (SSD) and volume Reproduction method (VRT), two-dimensional and three-dimensional images for comparative analysis and verification. Results: The upper and mandibular fractures, zygomatic fractures and displacement of three-dimensional images were significantly better than the two-dimensional images, ethmoid, sphenoid, palatal and other facial fractures two-dimensional images show clearer. Conclusion: Two-dimensional images are still the most basic basis for the diagnosis of maxillofacial fractures. The advantage of three-dimensional reconstruction lies in the multi-directional stereoscopic display of complex and comminuted fractures, which clearly shows the spatial anatomic relationship of the lesions.