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Titre : | Imagerie dentaire : Étude comparative de doses dans les techniques d'évaluation radiologique dentaire au panoramique, au cone beam CT et au scanner |
Auteurs : | Paul Yagne Belmbok, Auteur ; M. Frerotte, Promoteur |
Type de document : | Travail de fin d'études |
Année de publication : | 2017 |
Langues: | Français |
Index. décimale : | TFE - Imagerie médicale |
Résumé : |
The use of devices in dental imaging is on the rise. The arrival a few years ago of the CBCT has even more revolutionized the diagnosis of dental imaging. The CBCT uses a low power medical fluoroscopy tube that provides continuous imaging throughout the scan. The scanner or computer tomography then uses a high-output rotating anode X-ray tube made up of several generators, and to complete the process, the panoramic registers in one rotation a medical image of the whole of the teeth, maxilla and temporo-mandibular joints. The aim of this study is to compare the effective doses for the three modalities performing during a dental examination of the maxilla and to determine organs doses. The results based of retrospective patient examinations was collected during the TFE traineeship. The machines used here are the Planmeca for panoramic, somatom siemens 16 and 128 slices for computer tomography scan and Planmeca 3D Max for CBCT.
The effective radiation dose in this case, is calculated based on the ICRP 103 instructions of 2007. Following a comparison, an effective dose is obtained for the CBCT around the half of the scanner, and a tenth of the panoramic. The proportion of the calculated dose of the CBCT is 50% relative to the CT whereas the panoramic displays 10% of the CBCT. Organs doses are determined by two softwares PCXMC and ImPACT CT Patient Dosimetry using Anthropomorphic mathematical ghosts. The data analysis shows that for these three imaging modalities, organs such as the thyroid, bone marrow, and salivary glands absorb more radiation than organs such as the brain, skin and skeleton. We can take from the experiments that the effective doses of CBCT are higher than those of the panoramic while the CT is the highest dose of all the modalities. |
Disponible en ligne : | Non |
Lieu du stage : | Cliniques de l'Europe, site Saint-Michel |
Département : | Imagerie médicale |
Exemplaires (1)
Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|
YAG 17 | Travail de fin d'études | Woluwe | Espace livres | Prêt autorisé Disponible |