Patient alignment system with external measurement and object coordination for radiation therapy system
First Claim
1. A radiation therapy delivery system comprising a plurality of measurement devices configured to measure a direction to and a distance from a plurality of fixed landmarks and at least one of a moveable radiation nozzle and a moveable patient positioner, the system configured to calculate a current spatial position and angular orientation of at least one of the radiation nozzle and the patient positioner with reference to the plurality of fixed landmarks, the system further configured to determine movement commands to induce at least one of the radiation nozzle and the patient positioner to move from the current spatial position and angular orientation to a desired spatial position and angular orientation.
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Accused Products
Abstract
A patient alignment system for a radiation therapy system. The alignment system includes multiple external measurement devices which obtain position measurements of components of the radiation therapy system which are movable and/or are subject to flex or other positional variations. The alignment system employs the external measurements to provide corrective positioning feedback to more precisely register the patient and align them with a radiation beam. The alignment system can be provided as an integral part of a radiation therapy system or can be added as an upgrade to existing radiation therapy systems.
334 Citations
20 Claims
- 1. A radiation therapy delivery system comprising a plurality of measurement devices configured to measure a direction to and a distance from a plurality of fixed landmarks and at least one of a moveable radiation nozzle and a moveable patient positioner, the system configured to calculate a current spatial position and angular orientation of at least one of the radiation nozzle and the patient positioner with reference to the plurality of fixed landmarks, the system further configured to determine movement commands to induce at least one of the radiation nozzle and the patient positioner to move from the current spatial position and angular orientation to a desired spatial position and angular orientation.
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10. A radiation therapy delivery system comprising:
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means for measuring a direction to and a distance from a plurality of fixed landmarks and at least one of a moveable radiation nozzle and a moveable patient positioner; means for calculating a current spatial position and angular orientation of at least one of the radiation nozzle and the patient positioner with reference to the plurality of fixed landmarks; and means for determining movement commands to induce at least one of the patient positioner and the radiation nozzle to move from the current spatial position and angular orientation to a desired spatial position and angular orientation. - View Dependent Claims (11, 12, 13)
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14. A method of controlling movement of a patient positioner in a radiation therapy delivery system, the method comprising:
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measuring a direction to and a distance from a plurality of fixed landmarks and at least one of a moveable radiation nozzle and a moveable patient positioner; calculating a current spatial position and angular orientation of at least one of the radiation nozzle and the patient positioner with reference to the plurality of fixed landmarks; and determining movement commands to induce at least one of the radiation nozzle and the patient positioner to move from the current spatial position and angular orientation to a desired spatial position and angular orientation. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification