Abstract
This paper is concerned with the calibration of the intrinsic and extrinsic parameters of a X-ray angiographic system for 3D reconstruction of coronary vessel centerlines. We discuss whether the isocentric model is an accurate model for the movement of the C-arm, and analyse the assumptions made by this model. We propose a methodology which takes into account these facts and we propose for each model a calibration method. The calibration only needs a phantom that is commonly available by the physicians, since it is used to calibrate geometrical distortion. Then, we test the models with the calibration grid, as well as with a phantom imaged three months later. Experimental results show that by using the proposed models, it is not necessary neither a calibration nor a refinement at each acquisition.
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Cañero, C., Nofrerías, E., Mauri, J., Radeva, P. (2002). Modelling the Acquisition Geometry of a C-Arm Angiography System for 3D Reconstruction. In: Escrig, M.T., Toledo, F., Golobardes, E. (eds) Topics in Artificial Intelligence. CCIA 2002. Lecture Notes in Computer Science(), vol 2504. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36079-4_28
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DOI: https://doi.org/10.1007/3-540-36079-4_28
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