Quality assurance of 3D-CRT: Indications and difficulties in their applications

Begnozzi, L; Benassi, M; Bertanelli, M; Bonini, A; Cionini, L; Conte, Leopoldo; Fiorino, C; Gabriele, P; Gardani, G; Giani, A; Magri, S; Morelli, M; Morrica, B; Olmi, P; Orecchia, R; Penduzzu, G; Raffaele, L; Rosi, A; Tabocchini, M. A.; Valdagni, R; Viti, V.