Schweikard A, Shiomi H, Adler J
Informatik, Universitaet Lübeck, 23538 Lübeck, Germany.
Int J Med Robot. 2005 Jan;1(2):19-27. doi: 10.1002/rcs.38.
In robotic radiosurgery, a focused beam of radiation is moved by a robot arm. We investigated methods for soft-tissue navigation using robotic radiosurgery. In previous work we described a method for real-time tracking based on correlation between the motion of implanted fiducial markers and external skin markers. In this work we extend our method of correlation-based tracking to tracking without implanted fiducials. We propose to use deformation algorithms on CT data sets combined with registration of digitally reconstructed radiographs and intra-treatment X-ray images to obtain intermittent information on the target location. This information is then combined with our basic correlation method to achieve real-time tracking. Our study investigates the feasibility of this approach from the point of view of computing time and required level of user interaction. The term 7D registration is coined to describe the underlying method for performing this task.
在机器人放射外科手术中，一束聚焦的辐射由机器人手臂移动。我们研究了使用机器人放射外科手术进行软组织导航的方法。在之前的工作中，我们描述了一种基于植入基准标记物和外部皮肤标记物运动之间相关性的实时跟踪方法。在这项工作中，我们将基于相关性的跟踪方法扩展到无植入基准标记物的跟踪。我们建议对CT数据集使用变形算法，并结合数字重建射线照片和治疗中X射线图像的配准，以获取有关目标位置的间歇性信息。然后将此信息与我们的基本相关方法相结合，以实现实时跟踪。我们的研究从计算时间和所需用户交互水平的角度研究了这种方法的可行性。创造了术语“7D配准”来描述执行此任务的基础方法。
