Radiation therapy system and method
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsPeng Wang, Cheng Ni, Xingen Yu
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a therapeutic apparatus including an MRI apparatus configured to acquire MRI data with respect to a region of interest. The MRI apparatus may include a plurality of main magnetic field coils coaxially arranged along an axis. The MRI apparatus may also include a plurality of shielding coils arranged coaxially along the axis. A current within at least one of the shielding coils may be in the same direction with a current within the main magnetic field coils.
Claims18
A therapeutic apparatus including a magnetic resonance imaging (MRI) apparatus configured to acquire MRI data with respect to a region of interest (ROI), the MRI apparatus including:
- a main magnet body including a plurality of main magnetic field coils coaxially arranged along an axis;
- and
- a plurality of shielding coils including a first shielding coil, a second shielding coil and a shielding coil group arranged coaxially along the axis, wherein the shielding coil group is located between the first shielding coil and a second shielding coil.
A magnetic resonance imaging (MRI) apparatus configured to acquire MRI data with respect to a region of interest (ROI), the MRI apparatus being configured to be arranged coaxially with a radiation therapy apparatus along an axis, the MRI apparatus including:
- a plurality of main magnetic field coils coaxially arranged along an axis;
- and
- a plurality of shielding coils arranged coaxially along the axis, wherein the plurality of shielding coils are configured to reduce a magnetic field in a path of rotation of at least a portion of a radiation source of the radiation therapy apparatus;
- and
- the shielding coils include a first coil and a second coil with different sizes, wherein a direction of a current within the first coil is opposite to a direction of a current within the second coil.
A magnetic resonance imaging (MRI) apparatus configured to acquire MRI data with respect to a region of interest (ROI), the MRI apparatus including:
- an annular cryostat;
- a plurality of main magnetic field coils coaxially arranged along an axis of the annular cryostat;
- at least a first pair of shielding coils and a second pair of shielding coils with different sizes, wherein
- a direction of a current within the first pair of shielding coils is opposite to a direction of a current within the main magnetic field coils,
- the first pair of shielding coils is configured to shield a magnetic field outside the MRI apparatus, and
- the second pair of shielding coils is configured to shield a magnetic field between the first pair of shielding coils and the main magnetic field coils.
Dependencies are inferred from the claim text.