[1] Tarapaca Univ, Fac Hlth Sci, Radiol Sci Ctr, Arica, Chile
[2] Diego Portales Univ, Fac Hlth & Odontol, Manuel Rodriguez Sur 415, Santiago 8370179, Chile
[3] Nucl Technol Dev Ctr CDTN CNEN, Postgrad Sci & Technol Radiat Minerals & Mat, Ave Presidente Antonio Carlos 6-627,Campus UFMG, BR-31270901 Belo Horizonte, MG, Brazil
[4] Hosp Fornecedores Cana, INCORPI, Ave Barao Valenca 716, BR-13405233 Piracicaba, Brazil
[5] Tarapaca Univ, Fac Hlth Sci, Radiol Sci Ctr, Ave Gen Velasquez 1775, Arica 1000000, Chile