DICOM数据的三维重建与协同可视化系统的开发

复杂手术常需多科医生协商制定综合性治疗方案,网络协同三维可视化软件可使方案制定直观而精确。我们采用VTK工具包对DICOM格式CT图像数据进行三维重建并作网格简化,将结果所得多边形网格模型无缝集成到用HOOPS/3DAF所开发的图形系统进行显示,并用HOOPS/Stream工具包转成适合网络传输的HSF无损压缩流文件,再用HOOPS/NET工具包实现基于Client/Server架构的协同三维交互可视化系统。所得三维重建结果清晰,协同三维可视化操作实时度高。本研究实现了一个协同手术仿真开发平台,该架构易于进一步添加模拟手术操作与修复体设计功能。

The Development of a System for 3D Reconstruction from DICOM Data and Collaborative Visualization

Complex surgeries often need multi-disciplinary surgeons to work collaboratively and set synthesized operation plans.Aided by collaboration enabled three dimensional visualization software over network,operation plans can be made more intuitively and accurately.Because different disciplinary surgeons often work at different locations,a distributed collaboration virtue environment over network should be provided.By our knowledge,such a system does not exist yet.Toward this,we implement a platform upon Client/Server architecture over network.The 3D model is reconstructed from CT image data of DICOM format and the resulting mesh is then simplified,using the Visualization Toolkit(VTK).The simplified polygon mesh data is further seamlessly integrated into our 3D graphics system developed with the HOOPS/3DAF for displaying,where the model is converted to the lossless compression stream file format-HSF,which is suited for network transmission.Using this format,a collaboration enabled interactive visualization system is implemented upon Client/Server architecture,developed with HOOPS/NET toolkit.The reconstructed 3D model is clear,and the interactive collaboration with 3D visualization is fairly real-time.We then implemented a platform for developing collaborative surgery simulation software,into which the surgery operation simulation and prosthesis design function can be easily added.