Karar M E, Gessat M, Walther T, Falk V, Burgert O
Innovation Center Computer Assisted Surgery, Universitaet Leipzig, Germany.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:3645-8. doi: 10.1109/IEMBS.2009.5332516.
We propose a new image guidance system for assisting transapical minimally invasive aortic valve implantation. The goal is to define the exact positioning of aortic valve prosthesis, preventing the misplacement of the valve. The proposed system consists of two stand-alone modules. First, preoperative planning software uses DynaCT images with manual anatomical landmarks to calculate the size and optimal position of the prosthesis. Second, an intraoperative system is developed for tracking of the prosthesis and the coronary ostia in 2-D fluoroscopic images. Then the safe area of implantation is defined. The preliminary experimental results of preoperative planning and intraoperative tracking system are promising.
我们提出了一种用于辅助经心尖微创主动脉瓣植入的新型图像引导系统。目标是确定主动脉瓣假体的确切位置，防止瓣膜错位。所提出的系统由两个独立模块组成。首先，术前规划软件使用带有手动解剖标志的DynaCT图像来计算假体的尺寸和最佳位置。其次，开发了一种术中系统，用于在二维荧光透视图像中跟踪假体和冠状动脉口。然后确定安全植入区域。术前规划和术中跟踪系统的初步实验结果很有前景。
