title: Mean glandular dose in six digital mammography services in Santiago, Chile: preliminary reference levels.
abstract: The purpose of this paper was to estimate mean glandular dose levels (DG) in six digital mammography systems in Santiago, Chile, and to propose preliminary reference levels to execute mammography in Chile. The study was carried out assessing two direct digital systems and four computer-based radiography (CR) systems. Estimates of DG were calculated for different thicknesses of polymethyl methacrylate according to the quality control protocol in digital mammography of the Spanish Society of Medical Physics and NHSBSP Equipment Report 0604 Version 3. DG values ranged between 0.64 and 7.26 mGy for a range of 20- to 70-mm thickness, respectively. Thirty-six per cent of DG was higher than the acceptable dose level and 100 % of DG was higher than the desirable level. It is therefore necessary to optimise doses. The initial proposal to establish dose reference levels for DG would range between 0.90 and 6.40 mGy for a thickness range of 20 to 70 mm.
authors.affiliation: Faculty of Health and Odontology, Diego Portales University, Santiago, Chile Study Center in Radiological Sciences (CECRAD), Tarapacá University, Arica, Chile leyton.fernando@gmail.com.
authors.forename: Fernando
authors.initials: F
authors.lastname: Leyton
authors.affiliation: Nuclear Technology Development Center-CDTN/CNEN, Belo Horizonte, MG, Brazil.
authors.forename: Maria Do Socorro
authors.initials: Mdo S
authors.lastname: Nogueira
authors.affiliation: Industrias Nucleares do Brasil-INB, Caldas, Brazil.
authors.forename: Marcelino
authors.initials: M
authors.lastname: Dantas
authors.affiliation: Clínica Alemana, Santiago, Chile.
authors.forename: Maria Paz
authors.initials: MP
authors.lastname: Duran
authors.affiliation: Medical Technology Department, Study Center in Radiological Sciences (CECRAD), Health Sciences Faculty and CHIDE, Tarapacá University, Arica, Chile.
authors.forename: Carlos
authors.initials: C
authors.lastname: Ubeda
mesh_terms: D001940:Breast / Q000528:radiation effects*; D002677:Chile; D005260:Female; D006801:Humans; D008327:Mammography / Q000295:instrumentation / Q000379:methods*; D019904:Polymethyl Methacrylate; D011786:Quality Control; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000379:methods*; D011874:Radiometry; D012016:Reference Values
chemical_list: D019904:Polymethyl Methacrylate