基于VTK的DICOM医学图像三维重建研究

3D Reconstruction of DICOM Medical Image Based on VTK

医学图像三维重建技术利用二维医学图像序列重建出三维模型,为医生提供直观、全面、准确的病灶和正常组织信息,是当今医学影像领域研究的热点之一。VTK是国际上广泛应用的可视化工具包,具有优秀的架构和运行机制。本文研究了DICOM 3．0标准,提出了正确解读DICOM医学图像的方法;深入VTK内部机制,解决了VTK和DICOM医学图像读取模块问的数据接口问题;在三维重建过程中,为解决数据量巨大、成像时间漫长、阶梯效应、交互性不强等问题,重点剖析了VTK的数据处理机制,并给出相关优化方法。实验结果表明本文提出的解决方案和优化方法实用可靠,为进一步开发医学三维图形系统打下了基础。

Medical image visualization technologies build 3D models with 2D medical image series to provide useful and precise information for doctors. It is one of the crucial technologies in CAS （=Computer Aided Surgery） system, IGS （=hnage Guide Surgery） and MiS（=Minimal lnvasive Surgery）. VTK （=Visualization Tool Kit） is an advanced toolkit for 3D visualization. In this paper, firstly, DICOM （=Digital hnaging and Communication in Medicine） standard is analyzed to load the medical image series; Secondly, the data interface between DICOM loading module and visualization module is build; Thirdly, to solve the problems of huge memory and time consumption and poor interaction, optimizations such as Data Preprocessing, bnage Shrinking are proposed. Finally, the results analyzed have shown that the solutions and optimal methods presented in this paper are practical and reliable, which lays a solid foundation for further developing 3D models in medical image.