@inproceedings{9e9a4811ceaf4593ae4832aea622976f,
title = "An iterative framework for improving the accuracy of intraoperative intensity-based 2D/3D registration for image-guided orthopedic surgery",
abstract = "We propose an iterative refinement framework that improves the accuracy of intraoperative intensity-based 2D/3D registration. The method optimizes both the extrinsic camera parameters and the object pose. The algorithm estimates the transformation between the fiducials and the patient intraoperatively using a small number of X-ray images. The proposed algorithm was validated in an experiment using a cadaveric phantom, in which the true registration was acquired from CT data. The results of 50 registration trials with randomized initial conditions on a pair of X-ray C-arm images taken at 32° angular separation showed that the iterative refinement process improved the translational error by 0.32 mm and the rotational error by 0.61 degrees when compared to the 2D/3D registration without iteration. This tool has the potential to allow routine use of image guided therapy by computing registration parameters using only two X-ray images.",
keywords = "Image-guided therapy, Intensity-based 2D/3D registration",
author = "Yoshito Otake and Mehran Armand and Ofri Sadowsky and Armiger, {Robert S.} and Peter Kazanzides and Taylor, {Russell H.}",
year = "2010",
month = dec,
day = "1",
doi = "10.1007/978-3-642-13711-2_3",
language = "English (US)",
isbn = "3642137105",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
pages = "23--33",
booktitle = "Information Processing in Computer-Assisted Interventions - First International Conference, IPCAI 2010, Proceedings",
note = "1st International Conference on Information Processing in Computer-Assisted Interventions, IPCAI 2010 ; Conference date: 23-06-2010 Through 23-06-2010",
}