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



K. J. Batenburg, W. Van Aarle, and J. Sijbers, "A Semi-Automatic Algorithm for Grey Level Estimation in Tomography", Pattern Recognition Letters, vol. 32, no. 9, pp. 1395-1405, July, 2011. Download full paper (1.06 MB)
K. J. Batenburg, and J. Sijbers, "DART: A practical reconstruction algorithm for discrete tomography", IEEE Transactions on Image Processing, vol. 20, no. 9, pp. 2542-2553, 2011.
R. Pinho, K. G. Tournoy, and J. Sijbers, "Assessment and Stenting of Tracheal Stenosis using Deformable Shape Models", Medical Image Analysis, vol. 15, no. 2, pp. 250-266, 2011.


R. Pinho, "A Decision Support System for the Assessment and Stenting of Tracheal Stenosis", Department of Physics, Antwerp, University of Antwerp, 18/11/2010. Download thesis (3.48 MB)
K. J. Batenburg, J. Sijbers, H. F. Poulsen, and E. Knudsen, "DART: A Robust Algorithm for Fast Reconstruction of 3D Grain Maps", Journal of Applied Crystallography, vol. 43, pp. 1464-1473, 2010. Download full paper (1 MB)