Abstract
Accurate and fast fusion and display of real-time images of anatomy and associated data is critical for effective use in image guided procedures, including image guided cardiac catheter ablation. We have developed a piecewise patch-to-model matching method, a modification of the contractive projection point technique, for accurate and rapid matching between an intra-operative cardiac surface patch and a pre-operative cardiac surface model. Our method addresses the problems of fusing multi-modality images and using non-rigid deformation between a surface patch and a surface model. A projection lookup table, K-nearest neighborhood search, and a final iteration of point-to-projection are used to reliably find the surface correspondence. Experimental results demonstrate that the method is fast, accurate and robust for real-time matching of intra-operative surface patches to pre-operative 3D surface models of the left atrium.
Original language | English (US) |
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Pages (from-to) | 324-332 |
Number of pages | 9 |
Journal | Computerized Medical Imaging and Graphics |
Volume | 35 |
Issue number | 4 |
DOIs | |
State | Published - Jun 2011 |
Keywords
- Cardiac catheter ablation
- Contractive point projection
- Imaged-guided surgery
- Patch-to-model matching
- Point-to-projection
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Computer Vision and Pattern Recognition
- Health Informatics
- Computer Graphics and Computer-Aided Design