
Proceedings Paper
Rotational x-ray angiography: a method for intra-operative volume imaging of the left-atrium and pulmonary veins for atrial fibrillation ablation guidanceFormat | Member Price | Non-Member Price |
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Paper Abstract
Catheter-based ablation in the left atrium and pulmonary veins (LAPV) for treatment of atrial fibrillation
in cardiac electrophysiology (EP) are complex and require knowledge of heart chamber anatomy. Electroanatomical
mapping (EAM) is typically used to define cardiac structures by combining electromagnetic
spatial catheter localization with surface models which interpolate the anatomy between EAM point locations
in 3D. Recently, the incorporation of pre-operative volumetric CT or MR data sets has allowed for more detailed
maps of LAPV anatomy to be used intra-operatively. Preoperative data sets are however a rough guide
since they can be acquired several days to weeks prior to EP intervention. Due to positional and physiological
changes, the intra-operative cardiac anatomy can be different from that depicted in the pre-operative data.
We present an application of contrast-enhanced rotational X-ray imaging for CT-like reconstruction of 3D
LAPV anatomy during the intervention itself. Depending on the heart size a single or two selective contrastenhanced
rotational acquisitions are performed and CT-like volumes are reconstructed with 3D filtered back
projection. In case of dual injection, the two volumes depicting the left and right portions of the LAPV are
registered and fused. The data sets are visualized and segmented intra-procedurally to provide anatomical
data and surface models for intervention guidance. Our results from animal and human experiments indicate
that the anatomical information from intra-operative CT-like reconstructions compares favorably with preacquired
imaging data and can be of sufficient quality for intra-operative guidance.
Paper Details
Date Published: 21 March 2007
PDF: 9 pages
Proc. SPIE 6509, Medical Imaging 2007: Visualization and Image-Guided Procedures, 65090T (21 March 2007); doi: 10.1117/12.708485
Published in SPIE Proceedings Vol. 6509:
Medical Imaging 2007: Visualization and Image-Guided Procedures
Kevin R. Cleary; Michael I. Miga, Editor(s)
PDF: 9 pages
Proc. SPIE 6509, Medical Imaging 2007: Visualization and Image-Guided Procedures, 65090T (21 March 2007); doi: 10.1117/12.708485
Show Author Affiliations
R. Manzke, Philips Research North America (United States)
L. Zagorchev, Philips Research North America (United States)
A. d'Avila, Experimental Electrophysiology Lab., Cardiac Arrhythmia Service (United States)
L. Zagorchev, Philips Research North America (United States)
A. d'Avila, Experimental Electrophysiology Lab., Cardiac Arrhythmia Service (United States)
A. Thiagalingam, Experimental Electrophysiology Lab., Cardiac Arrhythmia Service (United States)
V. Y. Reddy, Experimental Electrophysiology Lab., Cardiac Arrhythmia Service (United States)
R. C. Chan, Philips Research North America (United States)
V. Y. Reddy, Experimental Electrophysiology Lab., Cardiac Arrhythmia Service (United States)
R. 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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