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US 2017/0281043 A1Published application
Systems and methods for radiotherapy with magnetic resonance imaging
AssigneeViewRay Technologies, Inc.
InventorsShmaryu M. Shvartsman, James F. Dempsey, David Nicolay
Life of this patent
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Abstract
Systems and methods for delivery of radiotherapy in conjunction with magnetic resonance imaging in which various conductors, shields and shims may be used to solve issues occurring when radiation therapy equipment is placed in the vicinity of an magnetic resonance imaging system.
Claims18
A system comprising:
- a magnetic resonance imaging system;
- a gantry;
- one or more radiation therapy heads fixed to the gantry;
- one or more collimating devices associated with the one or more heads, including a plurality of leaves;
- one or more leaf drive motors for moving the leaves, the one or more leaf drive motors including one or more position sensors, and a magnetic shield substantially surrounding the one or more position sensors;
- one or more permanent magnets adjacent the one or more leaf drive motors, the one or more permanent magnets oriented so as to counteract the Mill's main magnetic field;
- one or more additional conductive elements disposed around the gantry in a substantially symmetrical manner.
4 more elements
A system comprising:
- a magnetic resonance imaging system;
- a gantry;
- one or more radiation therapy heads fixed to the gantry;
- one or more collimating devices associated with the one or more heads;
- and, one or more additional conductive elements disposed around the gantry in a substantially symmetrical manner.
2 more elements
A system comprising:
- a magnetic resonance imaging system;
- a gantry;
- one or more radiation therapy heads fixed to the gantry;
- one or more collimating devices associated with the one or more heads, including a plurality of leaves;
- one or more leaf drive motors for moving the leaves, the one or more leaf drive motors including one or more position sensors and a magnetic shield substantially surrounding the one or more position sensors.
2 more elements
A system comprising:
- a magnetic resonance imaging system;
- a gantry;
- one or more radiation therapy heads fixed to the gantry;
- one or more collimating devices associated with the one or more heads, including a plurality of leaves;
- one or more leaf drive motors for moving the leaves;
- and, one or more permanent magnets adjacent the one or more leaf drive motors, the one or more permanent magnets oriented so as to counteract the Mill's main magnetic field.
3 more elements
Dependencies are inferred from the claim text.