CAJ | 학술논문

针对医学图像的建模与仿真分析需要解决的几何模型精度以及物理模型的正确性问题。本文以人体牙齿CT图像为例实现建模过程，在牙齿分割方面提出了改进。通过读取DICOM图像，对断层图像进行裁剪和分割等预处理，使用移动立方体（MC）算法进行表面重构，同时使用二次误差度量（QEM）方法消减和平滑三角面片，使用德洛奈（Delaunay）方法由面网格推出体网格模型。最后根据目标组织选择相应的物理模型采用有限元（FEM）方法做分析，使用OpenGL显示等效应力的受力云图。分析结果显示，本文所进行的SPECT医学图像重建及三维可视化研究结果与理论相符，通过SPECT图像的重建，更加准确的了解到人体组织器官的功能和代谢情况，提高了医护人员对疾病诊断的准确率。
침대의학도상적건모여방진분석수요해결적궤하모형정도이급물리모형적정학성문제。본문이인체아치CT도상위례실현건모과정，재아치분할방면제출료개진。통과독취DICOM도상，대단층도상진행재전화분할등예처리，사용이동립방체（MC）산법진행표면중구，동시사용이차오차도량（QEM）방법소감화평활삼각면편，사용덕락내（Delaunay）방법유면망격추출체망격모형。최후근거목표조직선택상응적물리모형채용유한원（FEM）방법주분석，사용OpenGL현시등효응력적수력운도。분석결과현시，본문소진행적SPECT의학도상중건급삼유가시화연구결과여이론상부，통과SPECT도상적중건，경가준학적료해도인체조직기관적공능화대사정황，제고료의호인원대질병진단적준학솔。
Aiming at solving the problem of medical image accuracy of geometry model and physical model in the analysis of modeling and simulation. This paper took teeth CT image as an example to realize human teeth modeling process, and put forward to improve the tooth segmentation. By reading the DICOM image, the tomographic images were cropped and segmenting, and used the marching cubes (MC) algorithm for surface reconstruction. At the same time, we used two quadric error metric (QEM) method to reduce and smooth triangle piece, and used the method of Delaunay to deduce the surface mesh to the solid mesh. Finally, we analyzed the target tissue with the finite element method (FEM) according to the choice of the corresponding physical model, and used the OpenGL to display the stress cloud atlas of equivalent stress. The results showed that the reconstruction of medical image SPECT and 3D visualization were consistent with the theory. Doctors could understand the human tissue and organ more accurately through the reconstruction of SPECT images, and the correct rate of diagnosis on disease had been improved.