Translator Disclaimer
22 March 2007 Rapid fusion of 2D x-ray fluoroscopy with 3D multislice CT for image-guided electrophysiology procedures
Author Affiliations +
Interventional cardiac electrophysiology (EP) procedures are typically performed under X-ray fluoroscopy for visualizing catheters and EP devices relative to other highly-attenuating structures such as the thoracic spine and ribs. These projections do not however contain information about soft-tissue anatomy and there is a recognized need for fusion of conventional fluoroscopy with pre-operatively acquired cardiac multislice computed tomography (MSCT) volumes. Rapid 2D-3D integration in this application would allow for real-time visualization of all catheters present within the thorax in relation to the cardiovascular anatomy visible in MSCT. We present a method for rapid fusion of 2D X-ray fluoroscopy with 3DMSCT that can facilitate EP mapping and interventional procedures by reducing the need for intra-operative contrast injections to visualize heart chambers and specialized systems to track catheters within the cardiovascular anatomy. We use hardware-accelerated ray-casting to compute digitally reconstructed radiographs (DRRs) from the MSCT volume and iteratively optimize the rigid-body pose of the volumetric data to maximize the similarity between the MSCT-derived DRR and the intra-operative X-ray projection data.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lyubomir Zagorchev, Robert Manzke, Ricardo Cury, Vivek Y. Reddy, and Raymond C. Chan "Rapid fusion of 2D x-ray fluoroscopy with 3D multislice CT for image-guided electrophysiology procedures", Proc. SPIE 6509, Medical Imaging 2007: Visualization and Image-Guided Procedures, 65092B (22 March 2007);

Back to Top