Method and apparatus for irradiating a target
First Claim
Patent Images
1. A method for irradiating a target, comprising:
- establishing a relationship of the at least one marker relative to the target by determining a relative position between the at least one marker and the target;
generating an image signal of the at least one marker;
generating a tracking signal in response to the image signal; and
adjusting a radiation beam in response to the tracking signal to track the target;
wherein the target is tracked while performing an intensity modulated radiotherapy using a first multi-leaf collimator, and wherein in the intensity modulated radiotherapy, a leaf of the first multi-leaf collimator is adjusted such that a first portion of the target receives more radiation than a second portion of the target.
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Abstract
An apparatus (10) for irradiating a target includes a radiation source (12) for generating a radiation beam and a multiple leaf beam adjuster (16) for collimating and adjusting the shape of the radiation beam from the radiation source (12) that would be projected on the target. An image detector (17) detects generates an image signal of the target. In response to the image signal, a control module (18) generate a beam adjustment signal for controlling the beam adjuster (16), thereby enabling the radiation beam from the radiation source (12) to track the movement of the target.
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Citations
37 Claims
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1. A method for irradiating a target, comprising:
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establishing a relationship of the at least one marker relative to the target by determining a relative position between the at least one marker and the target; generating an image signal of the at least one marker; generating a tracking signal in response to the image signal; and adjusting a radiation beam in response to the tracking signal to track the target; wherein the target is tracked while performing an intensity modulated radiotherapy using a first multi-leaf collimator, and wherein in the intensity modulated radiotherapy, a leaf of the first multi-leaf collimator is adjusted such that a first portion of the target receives more radiation than a second portion of the target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for irradiating a target in an animal body, comprising:
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establishing a relationship of at least one marker relative to the target by determining a relative position between the at least one marker and the target, the at least one marker being placed internally in the animal body; generating an image signal of the at least one marker; generating a tracking signal in response to the image signal; and adjusting a radiation beam in response to the tracking signal to track the target; wherein the target is tracked while performing an intensity modulated radiotherapy using a first multi-leaf collimator, and wherein the intensity modulated radiotherapy, a leaf of the first multi-leaf collimator is adjusted such that a first portion of the target receives more radiation than a second portion of the target. - View Dependent Claims (15, 16, 17, 18)
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19. An apparatus for irradiating a target, comprising:
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a platform for supporting an object having a marker indicating a position of the target; a radiation source, said radiation source generating a radiation beam toward said platform; a beam adjuster between said radiation source and said platform, said beam adjuster comprising a first multiple leaf collimator; a first image detector, said first image detector generating a first image signal of the marker; and a control module coupled to said image detector to said beam adjuster, said control module generating a beam adjustment signal for controlling said first multiple leaf collimator to track a movement of the target in response to the first image signal; wherein said control module is configured to control said first multiple leaf collimator to perform an intensity modulated radiotherapy, and wherein in the intensity modulated radiotherapy, a leaf of the first multiple leaf collimator is adjusted such that a first portion of the target receives more radiation than a second portion of the target. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for irradiating a target, comprising the steps of:
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using an internal anatomy of a patient as a marker; establishing a relationship of the marker relative to the target; generating an image signal of the marker; generating a tracking signal in response to the image signal; and adjusting a radiation beam in response to the tracking signal to track the target; wherein the target is tracked while performing an intensity modulated radiotherapy using a first multi-leaf collimator, and wherein in the intensity modulated radiotherapy, a leaf of the first multi-leaf collimator is adjusted such that a first portion of the target receives more radiation than a second portion of the target. - View Dependent Claims (29)
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30. A process for irradiating a target in an animal body, comprising the steps of:
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collecting a plurality of images at a plurality of phases in a same physiological cycle, said plurality of images providing an indication of a location of the target relative to an internal marker; creating a treatment plan based at least in part on the plurality of images collected at the plurality of phases in the cycle; and delivering a radiation beam to the animal body according to said treatment plan; wherein the radiation beam is delivered to perform an intensity modulated radiation therapy on a target of the animal body in which a first region of the target receives more radiation than a second region of the target while the target is being tracked, the target being tracked and the radiation beam being delivered by adjusting one or more leaves of a multi-leaf collimator. - View Dependent Claims (31, 32)
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33. A method for irradiating a target, comprising:
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determining a position of the target; tracking the target based on the determined position; and delivering radiation to perform an intensity modulated radiation therapy on the target while the target is being tracked; wherein the target is tracked by adjusting one or more leaves of a multi-leaf collimator, and wherein the radiation is delivered by further adjusting one of the one or more leaves of the multi-leaf collimator to modulate an intensity of the radiation delivered to the target such that a first region of the target receives more radiation that a second region of the target. - View Dependent Claims (34, 35, 36, 37)
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Specification