数字化大鼠动脉血管系统三维模型的建立

采用含造影剂及显色剂的填充剂对成年SD大鼠动脉血管系统进行灌注,并借助数字X射线成像设备对灌注效果进行实时监测,通过断层解剖成像系统获取切削间距为100 μm的二维断面解剖数据集(图像分辨率为4917×3446×24 bit,共1 464张),最后利用Visual C 结合可视化工具包编程实现数据集的动脉分割及三维可视化,得到数字化SD大鼠动脉血管系统的三维模型.该模型能提供大鼠动脉血管系统的空间结构信息,为实验大鼠血管系统的研究提供了更为准确可靠的形态学参考.

3D Model Construction for Arterial Vessels System of Digital Rat

This paper is aimed to construct a 3D model of arterial vessels system of digital rat. Firstly, the special injection medium was perfused into the arterial blood vessels of Sprague-Dawley rat; the quality of perfusion through the digital radiography system was evaluated at the same time. Then we used the sectional anatomy imaging system and achieved the digital rat atlas of sectional anatomy (sectional anatomy images were captured at 100 microm intervals, with the resolution of 4,917 x 3,446 x 24 bit and in a total of 1,464 slices). Finally, the 3D model of arterial vessels system of digital rat was constructed by segmentation, and the visualization programs were developed on Visual C+ + and Visualization ToolKit (VTK). By use of this model, the 3D microstructure of arterial system of digital rat can be obtained accurately. Remarkably, it will benefit the study of the blood vessels system on laboratory rat.