Ambient radiation levels in positron emission tomography/computed tomography (PET/CT) imaging center

Objective: To evaluate the level of ambient radiation in a PET/CT center. Materials and Methods: Previously selected and calibrated TLD-100H thermoluminescent dosimeters were utilized to measure room radiation levels. During 32 days, the detectors were placed in several strategically selected points inside the PET/CT center and in adjacent buildings. After the exposure period the dosimeters were collected and processed to determine the radiation level. Results: In none of the points selected for measurements the values exceeded the radiation dose threshold for controlled area (5 mSv/year) or free area (0.5 mSv/year) as recommended by the Brazilian regulations. Conclusion: In the present study the authors demonstrated that the whole shielding system is appropriate and, consequently, the workers are exposed to doses below the threshold established by Brazilian standards, provided the radiation protection standards are followed.

Bibliographic Details

Main Authors:	Santana,Priscila do Carmo, Oliveira,Paulo Marcio Campos de, Mamede,Marcelo, Silveira,Mariana de Castro, Aguiar,Polyanna, Real,Raphaela Vila, Silva,Teógenes Augusto da
Format:	Digital revista
Language:	English
Published:	Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem 2015
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842015000100008
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