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目的 探讨螺旋 CT三维 (3D)重建的方法和技巧。 材料与方法 使用 Hi Speed CT/ i扫描机 ,准直 1.0～ 5 .0 m m、螺距 1.0～ 2 .0 ,骨或标准算法 ,重建间隔 0 .1～ 2 .0 mm,应用软件功能 (Advantage Windows3.1工作站 )对 30 0例病人进行了各种 3D成像 (包括 MIP、Min IP、SSD、Ray Sum或叠加成像 )。 结果 所有病例都获得了满意的 3D图像。 3D重建可从不同角度和方位了解病变的形态、起源及其与周围结构的关系。 结论 高质量的 3D图像依赖于扫描及图像重建参数的合理选择和匹配 ,选择合适的重建方式及阈值 ,以及操作者的技巧和熟练程度。
Objective To explore the methods and techniques of three-dimensional (3D) reconstruction of spiral CT. Materials and Methods Using a Hi Speed CT / i scanner with a 1.0 to 5.0 mm alignment, a pitch of 1.0 to 2.0, a bone or standard algorithm, a reconstruction interval of 0.1-2.0 mm, an application software function (Advantage Windows 3 .1 workstation) Various 3D imaging (including MIP, Min IP, SSD, Ray Sum, or overlay imaging) was performed on 30 0 patients. Results All cases received satisfactory 3D images. 3D reconstruction can be from different angles and orientation of lesion morphology, origin and its relationship with the surrounding structure. Conclusion High-quality 3D images rely on reasonable selection and matching of scan and image reconstruction parameters, selection of appropriate reconstruction methods and thresholds, and operator skill and proficiency.