摘要
目的:探讨多层螺旋CT容积漫游技术(VRT)三维重建成像方法,评价其在脊柱损伤诊断的价值。方法:对65例脊柱损伤患者进行CT容积扫描,将原始图像进行低对比及高对比薄层重建,然后将重建图像导入CT3D工作站,选择合适CT值范围、不透明度、明亮度对脊柱损伤及术后病例脊柱进行VRT成像。并由2位CT诊断医生共同对相应图像进行观察分析。结果:VRT图像可清楚显示脊柱骨折移位、骨折线走向及脊柱损伤的三维空间关系;对内固定术后脊柱,VRT图像能清楚显示固定物与周围结构立体关系,基本无金属伪影。结论:多层螺旋CT-VRT后处理成像能清楚、立体、直观、多方位地显示脊柱损伤及术后改变,可为临床医生治疗及随访提供依据。
Objective： To investigate the imaging methods of multi-slice spiral CT（MSCT） with volume rendering technique （VRT） 3D renconstruction, and evaluate its clinical application in the diagnosis of spinal trauma. Material and Methods： There were 65 cases in this group. MSCT with volume rendering were performed in all cases. Then thin slice low and high constrast image were reconstructed. After that, all the source images were input into a 3D work station. High quality VRT-3D images of spinal trauma and after spinal internal fixation were obtained by selecting appropriate CT value. All the pictures were observed and analysed by two radiologist. Results： The optimal VRT images clearly showed alignment and displacement of fracture, and displayed space changes of spinal trauma. In observing spinal internal fixation with metal fixer, the optimal VRT images clearly showed the metal fixer and its surrounding structures. Conclusion： VRT-3D images of MSCT can directly, stereoscopically and multi-angularly show spinal trauma and after spinal internal fixation for the surgeons to decide clinical management.
出处
《中国临床医学影像杂志》
CAS
北大核心
2006年第3期151-153,共3页
Journal of China Clinic Medical Imaging
