Radiographic analysis of a X-Ray semiconductor detector with digital sensor for the determination of its efficiency - Silva, Marcia Carvalho; Herdade, Silvio Bruni; Nersissian, Denise Yanikian; Pereira, Marco Aurélio Guedes; Costa, Paulo Roberto; Terini, Ricardo Andrade (WORLD CONGRESS ON MEDICAL PHYSICS AND BIOMEDICAL ENGINEERING, 2000)