Assessment of scattered radiation from hand-held dental x-ray equipment using the Monte Carlo method

Autor(es)

Batista, Wilson Otto ^[1] ; Soares, Maria Rosangela ^{[2, 3]} ; Gurjao Rios, Jacqueline Machado ^[1] ; Dos Santos Souza, Antonio Carlos ^[1] ; Pinheiro, Isabelle Matos ^[1] ; Javier Vega Ramirez, Jose Luis ^[4] ; Caldas, Linda V. E. ^[3]

Afiliação do(s) autor(es)

^[1] Inst Fed Educ Ciencia & Tecnol Bahia IFBA, Salvador, BA - Brazil

^[2] Fundacao Univ Rondonia UNIR, Porto Velho, RO - Brazil

^[3] Comissao Nacl Energia Nucl IPEN CNEN, Inst Pesquisas Energet & Nucl, Sao Paulo, SP - Brazil

^[4] Univ Nacl San Augustin Arequipa UNSA, Arequipa - Peru

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF RADIOLOGICAL PROTECTION; v. 41, n. 4, p. 654-668, DEC 2021.
• Citações Web of Science: 0

Resumo

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. (AU)

• Processo FAPESP: 18/05982-0 - P&D&I em metrologia das radiações na área da saúde
• Beneficiário: Linda Viola Ehlin Caldas
• Modalidade de apoio: Auxílio à Pesquisa - Temático