Visual Optimality and Stability Analysis of 3DCT Scan Positions

Information

• Publication Type: Journal Paper with Conference Talk
• Workgroup(s)/Project(s):
  • Visualization Group
• Date: October 2010
• Date (from): 24. October 2010
• Date (to): 29. October 2010
• Event: VisWeek2010
• Journal: IEEE Transactions on Visualization and Computer Graphics
• Lecturer: Artem Amirkhanov
• Pages (from): Page 1477
• Pages (to): 1487

Abstract

Industrial cone-beam X-Ray computed tomography (CT) systems often face problems due to artifacts caused by a bad placement of the specimen on the rotary plate. This paper presents a visual-analysis tool for CT systems, which provides a simulation-based preview and estimates artifacts and deviations of a specimen’s placement using the corresponding 3D geometrical surface model as input. The presented tool identifies potentially good or bad placements of a specimen and regions of a specimen, which cause the major portion of artefacts. The tool can be used for a preliminary analysis of the specimen before CT scanning, in order to determine the optimal way of placing the object. The analysis includes: penetration lengths, placement stability and an investigation in Radon space. Novel visualization techniques are applied to the simulation data. A stability widget is presented for determining the placement parameters’ robustness. The performance and the comparison of results provided by the tool compared with real world data is demonstrated using two specimens.

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BibTeX

@article{amirkhanov2010AMA,
  title =      "Visual Optimality and Stability Analysis of 3DCT Scan
               Positions",
  author =     "Artem Amirkhanov and Christoph Heinzl and Michael Reiter and
               Meister Eduard Gr\"{o}ller",
  year =       "2010",
  abstract =   "Industrial cone-beam X-Ray computed tomography (CT) systems
               often face problems due to artifacts caused by a bad
               placement of the specimen on the rotary plate. This paper
               presents a visual-analysis tool for CT systems, which
               provides a simulation-based preview and estimates artifacts
               and deviations of a specimen’s placement using the
               corresponding 3D geometrical surface model as input. The
               presented tool identifies potentially good or bad placements
               of a specimen and regions of a specimen, which cause the
               major portion of artefacts. The tool can be used for a
               preliminary analysis of the specimen before CT scanning, in
               order to determine the optimal way of placing the object.
               The analysis includes: penetration lengths, placement
               stability and an investigation in Radon space. Novel
               visualization techniques are applied to the simulation data.
               A stability widget is presented for determining the
               placement parameters’ robustness. The performance and the
               comparison of results provided by the tool compared with
               real world data is demonstrated using two specimens.",
  month =      oct,
  journal =    "IEEE Transactions on Visualization and Computer Graphics",
  pages =      "Page 1477 --1487",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2010/amirkhanov2010AMA/",
}