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Proceedings Paper

Rapid fusion of 2D x-ray fluoroscopy with 3D multislice CT for image-guided electrophysiology procedures
Author(s): Lyubomir Zagorchev; Robert Manzke; Ricardo Cury; Vivek Y. Reddy; Raymond C. Chan
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Paper Abstract

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.

Paper Details

Date Published: 22 March 2007
PDF: 10 pages
Proc. SPIE 6509, Medical Imaging 2007: Visualization and Image-Guided Procedures, 65092B (22 March 2007); doi: 10.1117/12.708180
Show Author Affiliations
Lyubomir Zagorchev, Philips Research North America (United States)
Robert Manzke, Philips Research North America (United States)
Ricardo Cury, Massachusetts General Hospital (United States)
Harvard Medical School (United States)
Vivek Y. Reddy, Massachusetts General Hospital (United States)
Harvard Medical School (United States)
Raymond C. Chan, Philips Research North America (United States)


Published in SPIE Proceedings Vol. 6509:
Medical Imaging 2007: Visualization and Image-Guided Procedures
Kevin R. Cleary; Michael I. Miga, Editor(s)

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