Agressive recruitment maneuvers assessed by helical Ct: is it multiple slices? - Borges, J. B.; Janot, G.; Okamoto, V. F.; Barros, F.; Souza, C. E.; Carvalho, Carlos Roberto Ribeiro de; Barbas, Carmen Sílvia Valente; Amato, Marcelo Britto Passos (ATS, 2002)