Assessment of scattered radiation from hand-held dental x-ray equipment using the Monte Carlo method
| Autor: | Jacqueline Machado Gurjão Rios, Linda V.E. Caldas, José Luís Javier Vega Ramirez, Antonio Carlos dos Santos Souza, Maria Rosangela Soares, Wilson Otto Batista, Isabelle Matos Pinheiro |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Photons
Materials science Photon Scattering business.industry Equivalent dose X-Rays Radiography Monte Carlo method Public Health Environmental and Occupational Health General Medicine Radiation law.invention Lens (optics) Radiation Protection Optics law Scattering Radiation business Monte Carlo Method Waste Management and Disposal Beam (structure) |
| Zdroj: | Journal of Radiological Protection. 41:654-668 |
| ISSN: | 1361-6498 0952-4746 |
| DOI: | 10.1088/1361-6498/abf3cd |
| Popis: | The objective of the present study was to evaluate the intensity and spatial distribution of the scattered radiation caused by the use of hand-held x-ray equipment in the zone occupied by the operator, using the Monte Carlo simulation for radiographic views of the upper and lower incisor teeth, and the consequent evaluation of the equivalent dose in the lens. In order to carry out this evaluation, the geometry of a typical dental facility with plaster walls containing the scattering object was used for the computational scenario implemented for the Monte Carlo method simulation. The PENELOPE code for Monte Carlo simulation of electron and photon transport was used with the radiation beam represented by a 60 kV spectrum, 1.5 mm Al and tungsten target. The simulations were carried out with typical parameters for workload and the number of radiographs/week. The results showed that the exposure levels varied significantly according to the angle of the x-ray beam and with the distance to the scattering object. It is concluded that the incorporation of hand-held equipment in dental radiology must be accompanied by the surveillance of occupational exposure levels and a review of the training structure of professionals in dental radiology regarding aspects of radiological protection and the particularities of using this type of equipment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|