Pancreatic cancer: correlation of MR findings, clinical features, and tumor grade - Elias Júnior, Jorge; Semelka, Richard C.; Altun, Ersan; Tsurusaki, Masakatsu; Pamuklar, Ertan; Zapparoli, Mauricio; Voultsinos, Vasileios; Armao, Diane M.; Rubinas, Tara (Journal of Magnetic Resonance Imaging, 2007)