Symbolic Image Reco
The CT Reconstruction Module calculates three-dimensional volume data sets from the images taken by your CT scanner

CT Reconstruction

The improved CT Reconstruction Module quickly and precisely calculates three-dimensional volume data sets from the images taken by your CT scanner. You can then analyze and visualize these volume data set in VGStudio MAX 3.0 or VGStudio 3.0.

It's designed to work on off-the-shelf PCs – there is no special hardware required. Reconstruction is done either on a standard graphics card (GPU) or the CPUs (multi-processor/multi-core system).

The module:

  • uses, by incorporating OpenCL, one or multiple GPUs to speed up calculations;
  • offers interactive reconstruction previews;
  • supports cone beam, fan beam, parallel beam, planar, and helical (spiral) CT;
  • offers better support of planar CT including CT geometry misalignment correction;
  • uses the algorithms Feldkamp, Davis, and Kress (FDK) and Algebraic Reconstruction Technique (ART) for the image reconstruction of, e.g., planar or helical (spiral) scans;
  • reduces metal and ring artifacts;
  • uses more robust automatic scan geometry corrections (e.g., horizontal detector offset correction and axis tilt correction); and
  • improves the image quality using the standard Volume Graphics beam hardening correction or the optional Iterative Artifact Reduction (IAR)*.

* Technology licensed by Fraunhofer EZRT

Without beam hardening correction (above): Incorrect display of gray values (2D slices) causes, amongst others, holes in the object (3D view). With beam hardening correction (below): Clear presentation without artifacts (2D slices) leads to a closed detailed object (3D view).


By incorporating the OpenCL framework, the module can use one or multiple GPUs to speed up calculations.