Computer-assisted CT-guided stereotactic biopsy and brachytherapy of brain tumors Quiñones-Molina, R; Alaminos, A; Molina, H; Muñoz, J; López, G; Alvarez, L; Ortega, I; Piedra, J; Soler, W; Torres, A; Morales, F; Candentey, L. Braquiterapia, Iridium Metallicum, Neoplasias Encefálicas/cirugía