3D artefact for concurrent scale calibration in Computed Tomography

Alessandro Stolfi, Leonardo De Chiffre

Research output: Contribution to journalJournal articleResearchpeer-review


A novel artefact for calibration of the scale in 3D X-ray Computed Tomography (CT) is presented. The artefact comprises a carbon fibre tubular structure on which a number of reference ruby spheres are glued. The artefact is positioned and scanned together with the workpiece inside the CT scanner providing a reference system for measurement. The artefact allows a considerable reduction of time by compressing the full process of calibration, scanning, measurement, and re-calibration, into a single process. The method allows a considerable reduction of the amount of data generated from CT scanning. A prototype was calibrated and its applicability demonstrated.
Original languageEnglish
JournalC I R P Annals
Issue number1
Pages (from-to)499-502
Publication statusPublished - 2016


  • Calibration
  • Computed Tomography (CT)
  • Metrology

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