A Robust Technique for 2D-3D Registration

TitleA Robust Technique for 2D-3D Registration
Publication TypeConference Paper
Year of Publication2006
AuthorsGong, R. H., P. Abolmaesumi, and J. Stewart
Conference NameEngineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Pagination1433 -1436
Date Publishedaug.
Keywords3D computed tomography, bone, computerised tomography, consumer-grade graphics cards, CT data sets, diagnostic radiography, digitally reconstructed radiographs, femur, hardware rendering, image reconstruction, image registration, intra-operative fluoroscope images, Kalman filters, medical image processing, nonlinear dynamics, pelvis, phantom models, phantoms, rendering (computer graphics), robust 2D-3D registration method, scaphoid, single bone fragment, unscented Kalman filter

A robust 2D-3D registration method with a wide capture range is presented. The method registers pre-operatively collected 3D computed tomography (CT) data sets of a single bone fragment to its intra-operative fluoroscope images. The registration technique relies on hardware rendering of CT data on consumer-grade graphics cards to generate digitally reconstructed radiographs (DRRs) in real time. We also employ unscented Kalman filter to solve for the non-linear dynamics governing this 2D-3D registration problem. The method is validated on phantom models of three different anatomies, namely scaphoid, pelvis and femur. We show that, under the same testing conditions, our proposed technique outperforms the conventional simplex-based method in capture range and robustness while providing comparable accuracy and computation time


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