一种基于光学定位的自由式三维超声系统研发

自由式三维超声成像是一种新型的采用二维超声原理进行任意部位三维成像的设备,可以在传统的二维超声探头上固定用于空间定位的标记物,对扫描对象进行任意部位、大范围的三维扫描成像。文章介绍了一种可应用于微创手术导航的自由式三维超声成像系统,并详细分析了当前基于距离加权的三维超声重建算法的性能和优缺点。通过对体模和动物器官的超声图像扫描,并使用三维重建系统分别进行超声三维重建,得出了比较满意的结果,验证了三维重建算法及三维重建系统的可行性和有效性。

Development of Freehand 3D Ultrasound Imaging System Based on Optical Tracking Mechanism

The freehand 3D ultrasound is a new imaging tool based on the ultrasonic imaging mechanism and spatial positioning apparatus. It can be used to image all kinds of samples and in-vivo human subjects freely by integrating the spatial positioning senor on the conventional 2D probe of the 2D ultrasound system. In this paper, a freehand 3D ultrasound with the application of minimally invasive surgery was developed. The popular distance-weighted interpolation method was well studied and applied in our imaging system. Experimental results on both phantom and chicken kidney demonstrate that the developed freehand 3D ultrasound system can produce satisfied images to prove the feasibility of the system.