基于VTK软件的结直肠段三维数字可视化***☆

背景：将二维断层图像序列转变为具有直观立体效果的图像，展现人体器官的三维结构与形态，提供传统手段无法获得的解剖结构信息，是医学数据场可视化的基本任务。 目的：利用医学图像的三维可视化技术，建立肠道切片数据的三维可视化模型，为口服胶囊机器人在肠道中的空间位置跟踪研究、粪便嵌塞性肠梗阻情况下肠道承受水压冲洗能力的数值模拟研究提供肠道的几何空间结构参考依据。 方法：医学图像切片可视化的一般过程，包括图像获取、配准、三维面绘制重建，以及在Visual C++中利用VTK软件实现三维数字可视化。 结果与结论：利用VTK软件，实现了结直肠的三维数字可视化，可实现结直肠三维图像的旋转、缩放、平移，并将其集成到MFC图形用户界面中。实际得到的三维可视化模型可为口服胶囊机器人在肠道中的空间位置跟踪研究、粪便嵌塞性肠梗阻情况下肠道承受水压冲洗能力的数值模拟研究提供图像参考依据。

Visualization toolkit-based three-dimensional model of the colorectal segment

BACKGROUND: Converting the two-dimensional (2D) tomographic image sequences into an intuitive three-dimensional (3D) image, exhibiting the 3D structure of human organs and morphology, and providing anatomical information which are not available by traditional methods, are basic tasks to achieve visualization of medical data. OBJECTIVE: To establish a 3D visualization model based upon the intestinal slice data using 3D visualization technology for medical images for tracking the spatial position of a swallowable capsule robot within the intestinal tract, and for numerical simulation researching of intestinal ability to withstand water flushing of patients who suffered from fecal impaction or intestinal obstruction. METHODS: General process of visualization for medical image slices includes image acquisition, registration, 3D surface-rendering reconstruction, and implementation of 3D digital visualization using the visualization toolkit (VTK) in visual C++. RESULTS AND CONCLUSION: Using the VTK software, we implemented 3D digital visualization of colorectal image slices, including its rotation, zoom, pan of the 3D colorectal image, and integrated it into MFC graphical user interface. Actually achieved 3D visualization model could provide a reference image for researching on tracking the spatial position of a swallowable capsule robot within the intestinal tract, and for numerical simulation researching of intestinal ability to withstand water flushing of those patients who suffered from fecal impaction or intestinal obstruction.