【摘要】 目的探讨多层螺旋CT(MSCT)三维重建在腰椎骨折中的诊断价值。方法 40例腰椎骨折患者均行MSCT容积扫描及三维重建。重建方法包括多平面重建法(MPR)/最大密度投影(MIP)、表面遮盖显示法(SSD)和容积再现法(VR)。结合轴位图像,观察这三种重建图像在显示骨折线、骨碎片以及移位方向和程度的效果。结果 MPR/MIP对于显示骨折线及骨折碎片、椎体移位情况较好;SSD及VR则显示空间立体结构较为直观。结论 MSCT轴位图像是诊断腰椎骨折的基础,三维重建的优势在于对复杂性、粉碎性骨折的多方位立体显示,清晰显示病变的空间解剖关系。更多还原

【Abstract】 Objective To investigate the diagnostic value of three dimension(3D) reconstruction with multi-slice spiral CT(MSCT) for lumbar vertebra fractures.Methods 40 patients with lumbar vertebra fractures underwent the scanning of MSCT with 3D reconstruction.The methods of 3D reconstruction included multi-planar reconstruction(MPR)/maximum intensity projection(MIP),surface shaded display(SSD),and volume rendering(VR).Based on trans-axial images,the effect of the three reconstruction images were observed and evaluated in displaying fracture lines,fragments,displacement direction and degree.Results MPR/MIP is better to show fracture lines and fracture fragments,vertebra displacement,but SSD and VR were significantly superior to MPR in showing complex lumbar vertebra fractures,especially providing space relationship information of fragment misplacement.Conclusion The trans-axial scanning is the basis of diagnosis of lumbar vertebra fracture.The advantages of 3D reconstruction with MSCT are remarkable to reveal stereoscopically complex fractures and comminuted fractures.更多还原