先天性心脏病三维超声虚拟内窥镜可视化研究

目的 研究开发三维心脏超声虚拟内窥镜系统并对先天性心脏病进行可视化研究.方法 正常小儿10例、先天性心脏病患儿22例(房间隔缺损10例,室间隔缺损6例,法洛四联症6例),将计算机虚拟现实技术和科学计算可视化技术结合,使用C++6.0语言编写和可视化工具库(VTK)开发平台对心脏超声数据集进行三维重建,创建虚拟现实环境系统,建立三维超声虚拟心脏,通过心内导航实现虚拟心内漫游.结果 三维心脏超声虚拟内窥镜系统实现了心脏超声数据的心内三维可视化和心内导航.结论 三维心脏超声虚拟内窥镜系统为先天性心脏病的诊断提供了一种新的可视化方法.

Study on visualization of congenital heart disease by three-dimensional echocardiographic virtual endoscopy

Objective To research the visualization of congenital heart disease by three-dimensional echocardiographic(3DE) virtual endoscopy(VE) system. Methods Datasets.from 10 healthy children and 22 patients with congenital heart disease were collected (10 patients with atrial septal defects, 6 patients with ventricular septal defects and 6 patients with tetralogy of Fallot). 3DE heart models were reconstructed by virtual reality computing techniques and visualization in scientific computing techniques. The VE system was programmed under the C++ 6.0 language condition,the visualization toolkit (VTK) platform was employed to carry out the graphics and visualization utilities. The virtual eye can move along the navigation paths in the heart by manual camera movements. Results The VE can provide special information in aspects of intracardiac anatomy, The visible heart models show precisely complex anatomy structure and spatial relationships. 3DE intracardiac endoscopic imaging can thus be visualized and navigated successfully by the VE system. Conclusions 3DE VE is a new system for the visualization of congenital heart disease.