Patent ID: 11921176
Assignee: SIEMENS HEALTHCARE LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A magnetic resonance imaging (MRI) device comprising:
a field generator configured to provide a magnetic field in an imaging volume of the MRI device, the field generator comprising:
at least one magnet that confines the imaging volume in a spatial direction; and
a second magnet, wherein:

a curvature of the second magnet is different from a curvature of the at least one magnet,
the at least one magnet and the second magnet are arranged to provide access to the imaging volume along a first direction of access and a second direction of access, respectively, which correspond to two perpendicular spatial directions,
the at least one magnet is curved such that a perpendicular distance between a line oriented along the first direction of access to the imaging volume and a surface directed towards the imaging volume of the at least one magnet varies in the first direction of access to the imaging volume,
the at least one magnet is configured to enclose at least a part of the imaging volume along at least a part of the line oriented along the first direction of access to the imaging volume, and
the first direction of access and the second direction of access to the imaging volume along each of the at least two perpendicular spatial directions, respectively, are angled with respect to the main direction of magnetic field lines within the imaging volume.