Superconducting magnet assembly
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsXingen YU, Jin QIAN
Life of this patent
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Abstract
A superconducting magnet assembly may include a switch component including a first thermal switch and/or a second thermal switch. The first thermal switch may include a first activation mode configured to facilitate heat transfer between a first stage cold head and a radiation shield, and a first deactivation mode configured to break or impede the heat transfer between the first stage cold head and the radiation shield. The second thermal switch may include a second activation mode configured to facilitate heat transfer between a second stage cold head and a superconducting magnet, and a second deactivation mode configured to break or impede the heat transfer between the second stage cold head and the superconducting magnet.
Claims26
A superconducting magnet assembly, comprising:
- a cryostat, including
- an outer vessel;
- an inner vessel disposed in the outer vessel;
- and
- a radiation shield disposed between the outer vessel and the inner vessel;
- a superconducting magnet configured to generate a main magnetic field and disposed in the inner vessel;
- and
- a refrigeration component at least a portion of which is disposed within the outer vessel, including
- a refrigerator including a first stage cold head and/or a second stage cold head, the first stage cold head being configured to cool the superconducting magnet to a superconducting state, the second stage cold head being configured to cool the radiation shield;
- and
- a switch component including a first thermal switch and/or a second thermal switch, the first thermal switch including a first activation mode configured to facilitate heat transfer between the first stage cold head and the radiation shield, and a first deactivation mode configured to break or impede the heat transfer between the first stage cold head and the radiation shield, the second thermal switch including a second activation mode configured to facilitate heat transfer between the second stage cold head and the superconducting magnet, and a second deactivation mode configured to break or impede the heat transfer between the second stage cold head and the superconducting magnet.
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A magnetic resonance (MR) device, comprising:
- a superconducting magnet assembly including a bore;
- a frequency radio (RF) coil assembly disposed within the bore;
- and
- a gradient coil assembly disposed within the bore and between the RF coil assembly and the superconducting magnet assembly;
- wherein the superconducting magnet assembly includes:
- a cryostat, including
- an outer vessel;
- an inner vessel disposed in the outer vessel;
- and
- a radiation shield disposed between the outer vessel and the inner vessel;
- a superconducting magnet configured to generate a main magnetic field and disposed in the inner vessel;
- and
- a refrigeration component at least a portion of which is disposed within the outer vessel, including:
- a refrigerator configured to cool the superconducting magnet to a superconducting state and/or cool the radiation shield;
- a switch component accommodating a transfer medium of which liquid-gas transition controls the switch component to be in an activation mode or a deactivation mode;
- and
- a connection component configured to connect the refrigerator with the switch component, and connect the switch component with the radiation shield or the superconducting magnet.
Dependencies are inferred from the claim text.