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Permanent link (DOI): https://doi.org/10.7939/R3ZG6GM6D

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Density Conversion Factor Determined using a Cone-Beam Computed Tomography Unit NewTom QR-DVT 9000 Open Access

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Author or creator
Lagravère, Manuel O.
Fang, Y.
Carey, Jason
Toogood, Roger W.
Packota, Garnet V.
Major, Paul W.
Additional contributors
Subject/Keyword
Hounsfield Value
Computerized Tomography
Bone Density
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Objective: The purpose of this study was to determine a conversion coefficient for Hounsfield Units (HU) to material density (g cm−3) obtained from cone-beam computed tomography (CBCT-NewTom QR-DVT 9000) data. Methods: Six cylindrical models of materials with different densities were made and scanned using the NewTom QR-DVT 9000 Volume Scanner. The raw data were converted into DICOM format and analysed using Merge eFilm and AMIRA to determine the HU of different areas of the models. Results: There was no significant difference (P=0.846) between the HU given by each piece of software. A linear regression was performed using the density, ρ (g cm−3), as the dependent variable in terms of the HU (H). The regression equation obtained was ρ=0.002H−0.381 with an R2 value of 0.986. The standard error of the estimation is 27.104 HU in the case of the Hounsfield Units and 0.064 g cm−3 in the case of density. Conclusion: CBCT provides an effective option for determination of material density expressed as Hounsfield Units.
Date created
2006
DOI
doi:10.7939/R3ZG6GM6D
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© 2006 Manuel O. Lagravère et al. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
Lagravère, M., Fang, Y., Carey, J., Toogood, R., Packota, G., and Major, P. (2006). Density Conversion Factor Determined using a Cone-Beam Computed Tomography Unit NewTom QR-DVT 9000. Dentomaxillofacial Radiology, 35(6), 407-409.
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