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Article

Geometry Calibration of a Modular Stereo Cone-Beam X-ray CT System

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Imec—Vision Lab, Department of Physics, University of Antwerp, 2610 Antwerp, Belgium
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Biophysics and BioMedical Physics (BIMEF) Lab, University of Antwerp, 2020 Antwerp, Belgium
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Functional Morphology Lab (FunMorph), University of Antwerp, 2610 Antwerp, Belgium
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Authors to whom correspondence should be addressed.
Academic Editor: Gonzalo Pajares Martinsanz
J. Imaging 2021, 7(3), 54; https://doi.org/10.3390/jimaging7030054
Received: 4 February 2021 / Revised: 7 March 2021 / Accepted: 9 March 2021 / Published: 13 March 2021
(This article belongs to the Special Issue 2020 Selected Papers from Journal of Imaging Editorial Board Members)
Compared to single source systems, stereo X-ray CT systems allow acquiring projection data within a reduced amount of time, for an extended field-of-view, or for dual X-ray energies. To exploit the benefit of a dual X-ray system, its acquisition geometry needs to be calibrated. Unfortunately, in modular stereo X-ray CT setups, geometry misalignment occurs each time the setup is changed, which calls for an efficient calibration procedure. Although many studies have been dealing with geometry calibration of an X-ray CT system, little research targets the calibration of a dual cone-beam X-ray CT system. In this work, we present a phantom-based calibration procedure to accurately estimate the geometry of a stereo cone-beam X-ray CT system. With simulated as well as real experiments, it is shown that the calibration procedure can be used to accurately estimate the geometry of a modular stereo X-ray CT system thereby reducing the misalignment artifacts in the reconstruction volumes. View Full-Text
Keywords: stereo cone-beam geometry; geometry calibration; modular X-ray system stereo cone-beam geometry; geometry calibration; modular X-ray system
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MDPI and ACS Style

Nguyen, V.; Sanctorum, J.G.; Van Wassenbergh, S.; Dirckx, J.J.J.; Sijbers, J.; De Beenhouwer, J. Geometry Calibration of a Modular Stereo Cone-Beam X-ray CT System. J. Imaging 2021, 7, 54. https://doi.org/10.3390/jimaging7030054

AMA Style

Nguyen V, Sanctorum JG, Van Wassenbergh S, Dirckx JJJ, Sijbers J, De Beenhouwer J. Geometry Calibration of a Modular Stereo Cone-Beam X-ray CT System. Journal of Imaging. 2021; 7(3):54. https://doi.org/10.3390/jimaging7030054

Chicago/Turabian Style

Nguyen, Van, Joaquim G. Sanctorum, Sam Van Wassenbergh, Joris J. J. Dirckx, Jan Sijbers, and Jan De Beenhouwer. 2021. "Geometry Calibration of a Modular Stereo Cone-Beam X-ray CT System" Journal of Imaging 7, no. 3: 54. https://doi.org/10.3390/jimaging7030054

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