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International Journal of Biomedical Imaging
Volume 2013, Article ID 472971, 10 pages
http://dx.doi.org/10.1155/2013/472971
Research Article

Endoscopy-MR Image Fusion for Image Guided Procedures

1Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, Canada L1H 7K4
2Department of Medical Imaging, University of Toronto, Toronto, ON, Canada M5T 1W7

Received 11 April 2013; Revised 27 August 2013; Accepted 13 September 2013

Academic Editor: Tiange Zhuang

Copyright © 2013 Anwar Abdalbari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Minimally invasive endoscope based abdominal procedures provide potential advantages over conventional open surgery such as reduced trauma, shorter hospital stay, and quick recovery. One major limitation of using this technique is the narrow view of the endoscope and the lack of proper 3D context of the surgical site. In this paper, we propose a rapid and accurate method to align intraoperative stereo endoscopic images of the surgical site with preoperative Magnetic Resonance (MR) images. Gridline light pattern is projected on the surgical site to facilitate the registration. The purpose of this surface-based registration is to provide 3D context of the surgical site to the endoscopic view. We have validated the proposed method on a liver phantom and achieved the surface registration error of  mm.