@conference{NRDS15a,
Author = {M. Neidhardt and O. Rajput and D. Drömann and A. Schlaefer},
Title = {Mobile C-arm Deformation and its implication on Stereoscopic Localization.},
Journal = {<em>Tagungsband der 14. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie CURAC'15</em>.},
Year = {(2015).},
Volume = {<strong>1</strong>.},
Pages = {183-187},
Month = {September},
Address = {Bremen, Germany},
Isbn = {978-3-00-050359-7},
Booktitle = {<em>Tagungsband der 14. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie</em>},
Abstract = {Accurate localization in minimally invasive procedures is challenging, particularly in the presence of nonideal imaging systems. Mobile C\-arms present a widely used tool for image guidance, including stereoscopic localization of tools, e.g., during bronchoscopy. However, the localization accuracy is susceptible to non\-idealities like gravitational deformation of the C\-arm gantry. We present a simulation study quantifying the effects of the deformation on two different approaches, namely, external tracking of the gantry pose and marker based pose estimation from within the X\-ray images. A finite element model for a typical C\-arm geometry is used to estimate deformations and their effect on the localization error is determined. Results show possible offsets between the C\-arm source and detector position of up to 12 mm and a detector rotation of 1\°. Furthermore, we demonstrate that localization based on the X\-ray images is superior to external tracking of the gantry, with a target localization error of (0.67 \± 0.25) mm and (4.29 \± 0.69) mm, respectively}
}

@COMMENT{Bibtex file generated on 2026-5-15 with typo3 si_bibtex plugin. Data from https://www.tuhh.de/mtec/publications/2019-2013 }