Analyzing radiation absorption difference of dental substance by using Dual CT |
| |
Authors: | H Yu HK Lee HJ Yang YS Ju |
| |
Institution: | 1. Department of International Radiological Science, Hallym University of Graduate Studies, Seoul 410–769, Republic of Korea;2. Department of Radiology, Kyung Hee University Hospital at Gang-dong, Seoul 134–727, Republic of Korea;3. Department of Computer Science and Engineering, Soonchunhyang University, Asan 336–745, Republic of Korea;4. Department of Dental Medicine, Kyung Hee University Dental Hospital at Gang-dong, Seoul 134–727, Republic of Korea |
| |
Abstract: | The purpose of this study was to evaluate the changes of noise and computer tomography (CT) number in each dental substance, by using the metal artefact reduction algorithm; we used dual CT for this study. For the study, we produced resin, titanium, gypsum, and wax that are widely used by dentists. In addition, we made nickel to increase the artefact. While making the study materials, we made sure that there is no difficulty when inserting the substances inside phantom. In order to study, we scanned before and after using the metal artefact reduction algorithm. We conducted an average analysis of CT number and noise, before and after using the metal artefact reduction algorithm. As a result, there was no difference in CT number and noise before and after using the metal artefact reduction algorithm. However, when it comes to the noise value in each substance, wax's noise value was the lowest whereas titanium's noise value was the highest, after applying the metal artefact reduction algorithm. In nickel, CT number and noise value from artefact area showed a decreased noise value when applying the metal artefact reduction algorithm. In conclusion, we assumed that we could increase the effectiveness of CT examination by applying dual energy's metal artefact reduction algorithm. |
| |
Keywords: | metal artefact reduction algorithm dual computer tomography computer tomography number noise dental substance |
|
|