2.3.1. Production of 3D models

A dual-source spiral CT was used to scan the spinal tuberculosis lesion area in the observation group to obtain tomographic images of lesion segments that were saved in DICOM format and input to the computer. The MIMCS software was used to generate 3D images. A fully fitted and interactive screen display design method was used to locate and sort defects around the Computer Aided Design 3D model through image segmentation and registration to extract the area of interest. The surface is drawn without data loss to obtain a triangular mesh image. The 3D model is generated after filling. After “slicing” the STL file, the information is processed using the program to control the 3D printing equipment in turn, and the diseased vertebra is copied layer by layer. Reconstruction results are outputted in STL format, and the 3D model data of the vertebral body is inputted to a 3D printer through a digital interface.