The applicability of using different energy levels in CT imaging for differentiation or identification of dental restorative materials.
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BORIS DOI
Publisher DOI
PubMed ID
25115671
Description
PURPOSE
The goal of this study was to investigate whether different computed tomography (CT) energy levels could supply additional information for the differentiation of dental materials for forensic investigations.
METHODS
Nine different commonly used restorative dental materials were investigated in this study. A total of 75 human third molars were filled with the restorative dental materials and then scanned using the forensic reference phantom in singlesource mode. The mean Hounsfield unit values and standard deviations (SDs) of each material were calculated at 120, 80 and 140 kVp.
RESULTS
Most of the dental materials could be differentiated at 120 kVp. We found that greater X-ray density of a material resulted in higher SDs and that the material volume could influence the measurements.
CONCLUSION
Differentiation of dental materials in CT was possible in many cases using single-energy CT scans at 120 kVp. Because of the number of dental restorative materials available and scanner and scan parameter dependence, as well as the CT imaging artifacts, the identification (in contrast to differentiation) was problematic.
The goal of this study was to investigate whether different computed tomography (CT) energy levels could supply additional information for the differentiation of dental materials for forensic investigations.
METHODS
Nine different commonly used restorative dental materials were investigated in this study. A total of 75 human third molars were filled with the restorative dental materials and then scanned using the forensic reference phantom in singlesource mode. The mean Hounsfield unit values and standard deviations (SDs) of each material were calculated at 120, 80 and 140 kVp.
RESULTS
Most of the dental materials could be differentiated at 120 kVp. We found that greater X-ray density of a material resulted in higher SDs and that the material volume could influence the measurements.
CONCLUSION
Differentiation of dental materials in CT was possible in many cases using single-energy CT scans at 120 kVp. Because of the number of dental restorative materials available and scanner and scan parameter dependence, as well as the CT imaging artifacts, the identification (in contrast to differentiation) was problematic.
Date of Publication
2014-12
Publication Type
article
Subject(s)
600 - Technology::610 - Medicine & health
Language(s)
en
Contributor(s)
Kutschy, Josef M | |
Ampanozi, Garyfalia | |
Berger, Nicole | |
Thali, Michael J | |
Ebert, Lars C |
Additional Credits
Universitätsinstitut für Diagnostische, Interventionelle und Pädiatrische Radiologie
Series
Forensic science, medicine, and pathology
Publisher
Springer
ISSN
1556-2891
Access(Rights)
open.access