John Matthias, Liao Rui, Zheng Yefeng, Nöttling Alois, Boese Jan, Kirschstein Uwe, Kempfert Jörg, Walther Thomas
Siemens AG, Healthcare Sector, Forchheim, Germany.
Med Image Comput Comput Assist Interv. 2010;13(Pt 1):375-82. doi: 10.1007/978-3-642-15705-9_46.
Transcatheter aortic valve implantation is an emerging technique to be applied in patients with aortic valve defects. Angiographic and fluoroscopic X-ray imaging with a C-arm system is crucial in these minimally invasive procedures. We describe a prototypical system based on the ability to acquire a 3D C-arm CT image during transcatheter aortic valve implantations. It supports the physician in measuring critical anatomical parameters, finding an optimum C-arm angulation, and guiding the positioning and deployment of the prosthesis by 3D overlay with fluoroscopic images. To yield high acceptance by the physicians in the operating room, our approach is fast, fully integrated into an angiographic C-arm system, and designed to minimize the necessary user interaction. We evaluate the accuracy of our system on 20 clinical cases.
经导管主动脉瓣植入术是一种应用于主动脉瓣缺损患者的新兴技术。使用C形臂系统进行血管造影和荧光透视X射线成像在这些微创手术中至关重要。我们描述了一种基于在经导管主动脉瓣植入术中获取三维C形臂CT图像能力的原型系统。它通过与荧光透视图像进行三维叠加，辅助医生测量关键解剖参数、找到最佳C形臂角度，并指导假体的定位和展开。为了在手术室中获得医生的高度认可，我们的方法速度快、完全集成到血管造影C形臂系统中，并且旨在尽量减少必要的用户交互。我们在20个临床病例上评估了我们系统的准确性。
