A magnetic resonance imaging device may include a field generator configured to provide a magnetic field in an imaging volume of the magnetic resonance imaging device. The field generator may include at least one magnet that confines the imaging volume in at least one spatial direction. The at least one magnet may be curved in such a way that a perpendicular distance between a line oriented along a direction of access to the imaging volume and a surface directed towards the imaging volume of the at least one magnet varies in the direction of access to the imaging volume.