title: System to guide transcatheter aortic valve implantations based on interventional C-arm CT imaging.
abstract: 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.
authors.affiliation: Siemens AG, Healthcare Sector, Forchheim, Germany. matthias.mj.john@siemens.com
authors.forename: Matthias
authors.initials: M
authors.lastname: John
authors.forename: Rui
authors.initials: R
authors.lastname: Liao
authors.forename: Yefeng
authors.initials: Y
authors.lastname: Zheng
authors.forename: Alois
authors.initials: A
authors.lastname: Nöttling
authors.forename: Jan
authors.initials: J
authors.lastname: Boese
authors.forename: Uwe
authors.initials: U
authors.lastname: Kirschstein
authors.forename: Jörg
authors.initials: J
authors.lastname: Kempfert
authors.forename: Thomas
authors.initials: T
authors.lastname: Walther
mesh_terms: D006328:Cardiac Catheterization / Q000379:methods*; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015641:Radiography, Interventional / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014584:User-Computer Interface