Gradient nonlinearity effects on upper cervical spinal cord area measurement from 3D T1‐weighted brain MRI acquisitions. - Papinutto, Nico; Bakshi, Rohit; Bischof, Antje; Calabresi, Peter A.; Caverzasi, Eduardo; Constable, R. Todd; Datta, Esha; Kirkish, Gina; Nair, Govind; Oh, Jiwon; Pelletier, Daniel; Pham, Dzung L.; et al. (Magnetic Resonance in Medicine, 2018)