Patent ID: 11946992
Assignee: CANON MEDICAL SYSTEMS CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. An MRI system, comprising:
at least one magnetic field assembly that includes an open main magnet configured to generate a main magnetic field, a plurality of gradient coils configured to generate a gradient magnetic field, and a plurality of RF coils configured to generate a radio frequency magnetic field, the main magnetic field dominantly determining a magnetic resonance frequency;
at least one of a first correction magnet and a second correction magnet, the first correction magnet being provided for a first examination room at a position facing the open main magnet, the second correction magnet being provided for a second examination room at a position facing the open main magnet, and
at least one image generator configured to generate a magnetic resonance image of an object by using the open main magnetic field, the gradient magnetic field, and the radio frequency magnetic field generated by the at least one magnetic field assembly, wherein:
the open main magnet is disposed between adjacent examination rooms;
the main magnetic field generated by the open main magnet is commonly used in each of the adjacent examination rooms;
the open main magnet is disposed between the first examination room and the second examination room adjacent to each other, and configured to generate a magnetic field that constitutes the main magnetic field common to the first examination room and the second examination room;
the plurality of gradient coils includes a first gradient coil configured to generate a first gradient magnetic field in the first examination room and a second gradient coil configured to generate a second gradient magnetic field in the second examination room; and
the plurality of RF coils includes a first RF coil configured to generate a first radio frequency magnetic field in the first examination room and a second RF coil configured to generate a second radio frequency magnetic field in the second examination room,
the main magnetic field generated by the open main magnet is commonly used in each of the adjacent examination rooms;
the main magnetic field is generated by the open main magnet in a first direction and a second direction, the second direction being opposite to the first direction;
the main magnetic field generated in the first direction constitutes the main magnetic field for one of the adjacent examination rooms; and
the at least one of the first correction magnet and the second correction magnet is configured to generate a correction magnetic field that corrects the main magnetic field.