Tomography is an imaging technique that combines projections taken from different directions into a reconstruction of the interior of a patient or an object. The ASTRA research group (“All Scales Tomographic Reconstruction Antwerp”) of imec-Vision Lab develops tomographic reconstruction algorithms for electron, X-ray, neutron, and magnetic resonance imaging. The ASTRA group developed the ASTRA-Toolbox, which is an open source, GPU accelerated software platform for the development of novel tomographic reconstruction methods; it can be downloaded from

Key expertises:

  • Discrete tomography
  • X-ray tomography for non-standard acquisition geometries
  • Electron tomography
  • Dynamic (4D) tomography

Journal publications


A. Dabravolski, K. J. Batenburg, and J. Sijbers, "Dynamic Angle Selection in X-ray Computed Tomography", Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 324, pp. 17-24, 2014. Download full paper (392.06 KB)


T. Roelandts, "Local Prior Knowledge in Tomography", Department of Physics, vol. PhD in Sciences: Physics, 11/2013. Download PhD thesis (15.6 MB)
K. Zarei Zefreh, W. Van Aarle, K. J. Batenburg, and J. Sijbers, "Super-Resolution of License Plate Images using Algebraic Reconstruction Technique", Journal of Image and Graphics, vol. 1, issue 2, USA, Engineering and Technology Publishing (ETP), pp. 94 - 98, 2013.
H. Segers, W J. Palenstijn, K. J. Batenburg, and J. Sijbers, "Discrete Tomography in MRI: a Simulation Study", Fundamenta Informaticae, vol. 125, issue 3-4, pp. 223-237, 2013.
K. J. Batenburg, W J. Palenstijn, P. Balazs, and J. Sijbers, "Dynamic angle selection in binary tomography", Computer Vision and Image Understanding, vol. 117, issue 5, pp. 306–318, 2013.


P. Lo, B. van Ginneken, J. M. Reinhardt, T. Yavarna, P. A. de Jong, B. Irving, C. Fetita, M. Ortner, R. Pinho, J. Sijbers, et al., "Extraction of airways from CT (EXACT'09).", IEEE Transactions on Medical Imaging, vol. 31, issue 11, pp. 2093-107, 2012 Nov.