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Quantification of Metal Artifacts on Cone Beam Computed Tomography Images by Ruben Pauwels; Harry Stamatakis; Hilde Bosmans; Ria Bogaerts; Reinhilde Jacobs; Keith Horner; Kostas Tsiklakis is a Dentistry article available to read on EtoBox.

What is Quantification of Metal Artifacts on Cone Beam Computed Tomography Images about?

## Abstract ## Objectives To quantify metal artifacts obtained from a wide range of cone beam computed tomography (CBCT) devices and exposure protocols, to compare their tolerance to metals of different densities, and to provide insights regarding the possible implementation of metal artifact analysis into a QC protocol for CBCT. ## Materials and methods A customized polymethyl methacrylate (PMMA) phantom, containing titanium and lead rods, was fabricated. It was scanned on 13 CBCT devices and one multi‐slice computed tomography (MSCT) device, including high‐dose and low‐dose exposure protocols. Artifacts from the rods were assessed by two observers by measuring the standard deviation of voxel values in the vicinity of the rods, and normalizing this value to the percentage of the theoretical maximum standard deviation. ## Results For CBCT datasets, artifact values ranged between 6.1% and 27.4% for titanium, and between 10.% and 43.7% for lead. Most CBCT devices performed worse than MSCT for titanium artifacts, but all of them performed better for lead artifacts. In general, no clear improvement of metal artifacts was seen for high‐dose protocols, although certain devices showed som

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Author

Ruben Pauwels; Harry Stamatakis; Hilde Bosmans; Ria Bogaerts; Reinhilde Jacobs; Keith Horner; Kostas Tsiklakis

Publisher

Wiley

Published

2011

Language

EN

Field

Dentistry (Health Sciences)