Clinical feasibility of açai (Euterpe olerácea) pulp as an oral contrast agent for magnetic resonance cholangiopancreatography - Sanchez, Tiago Arruda; Elias Júnior, Jorge; Colnago, Luiz Alberto; Troncon, Luiz Ernesto de Almeida; Oliveira, Ricardo Brandt de; Baffa, Oswaldo; Araújo, Dráulio Barros de (Journal of Computer Assisted Tomography, 2009)