Dosimetry and image quality assessment in a direct radiography system.
OBJECTIVE
To evaluate the mean glandular dose with a solid state detector and the image quality in a direct radiography system, utilizing phantoms.


METHODS
Irradiations were performed with automatic exposure control and polymethyl methacrylate slabs with different thicknesses to calculate glandular dose values. The image quality was evaluated by means of the structures visualized on the images of the phantoms.


RESULTS
Considering the uncertainty of the measurements, the mean glandular dose results are in agreement with the values provided by the equipment and with internationally adopted reference levels. Results obtained from images of the phantoms were in agreement with the reference values.


CONCLUSIONS
The present study contributes to verify the equipment conformity as regards dose values and image quality.
Masters, Fellow PhD degree, Course of Science and Technology of Radiations, Minerals and Materials - Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/ CNEN), Belo Horizonte, MG, Brazil.
Bruno Beraldo
BB
Oliveira
Master, Teacher, Department of Anatomy and Imaging, School of Medicine - Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.
Marcio Alves
MA
de Oliveira
Masters, Fellow PhD degree, Course of Science and Technology of Radiations, Minerals and Materials - Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/ CNEN), Belo Horizonte, MG, Brazil.
Lucas
L
Paixão
MD, Radiologist, Technical Director of Clínica Dra. Maria Helena Araújo Teixeira, Belo Horizonte, MG, Brazil.
Maria Helena Araújo
MH
Teixeira
PhD, Titular Researcher-Professor, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, MG, Brazil.
Maria do Socorro
Mdo S
Nogueira
Direct radiography; Image; Mean glandular dose