System to guide transcatheter aortic valve implantations based on interventional c-arm CT imaging

Authors:
Matthias John;Rui Liao;Yefeng Zheng;Alois Nöttling;Jan Boese;Uwe Kirschstein;Jörg Kempfert;Thomas Walther
Affiliations:
Siemens AG, Healthcare Sector, Forchheim, Germany;Siemens Corporate Research, Princeton;Siemens Corporate Research, Princeton;Siemens AG, Healthcare Sector, Forchheim, Germany;Siemens AG, Healthcare Sector, Forchheim, Germany;Siemens AG, Healthcare Sector, Forchheim, Germany;Department of Cardiac Surgery, Heart Center, University of Leipzig, Germany;Department of Cardiac Surgery, Kerckoff Heart Center, Bad Nauheim, Germany
Venue:
MICCAI'10 Proceedings of the 13th international conference on Medical image computing and computer-assisted intervention: Part I
Year:
2010

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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.