Method and apparatus for controlling a rotatable multi-element beam shaping device
First Claim
1. A method for generating a plurality of sets of segment data, comprising:
- inputting treatment data into a planning computer, said treatment data defining a radiation therapy treatment to be delivered by a radiation therapy device having independently rotatable X- and Y-collimator jaws, said X-collimator jaws further having a plurality of elements, said plurality of elements independently movable across a beam axis; and
generating, based on said treatment data, a plurality of sets of segment data, each of said sets of segment data including data for positioning said X- and Y-collimator jaws and said plurality of elements to deliver a portion of said radiation therapy treatment.
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Abstract
A method and apparatus for generating a plurality of sets of segment data include inputting treatment data into a planning computer, the treatment data defining a radiation therapy treatment to be delivered by a radiation therapy device having independently rotatable X- and Y-collimator jaws in which the X-collimator jaws have a plurality of elements which may be independently moved across a beam axis. A plurality of sets of segment data are generated based on the treatment data. Each of the plurality of sets of segment data include data for positioning the X- and Y-collimator jaws and the plurality of elements in order to deliver a portion of the radiation therapy treatment.
49 Citations
12 Claims
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1. A method for generating a plurality of sets of segment data, comprising:
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inputting treatment data into a planning computer, said treatment data defining a radiation therapy treatment to be delivered by a radiation therapy device having independently rotatable X- and Y-collimator jaws, said X-collimator jaws further having a plurality of elements, said plurality of elements independently movable across a beam axis; and
generating, based on said treatment data, a plurality of sets of segment data, each of said sets of segment data including data for positioning said X- and Y-collimator jaws and said plurality of elements to deliver a portion of said radiation therapy treatment. - View Dependent Claims (2, 3, 4, 5)
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6. A radiation therapy method, comprising:
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establishing a treatment plan;
rotating a first and a second radiation blocking device about an axis to produce a portal shape, said second radiation blocking device comprising a pair of jaws independently rotatable of said first radiation blocking device and having a plurality of elements disposed thereon that are individually movable across said axis;
adjusting a position of at least one of said plurality of elements to abut an opposing one of said plurality of elements to adjust said portal shape according to said treatment plan; and
directing a radiation beam along said axis toward a treatment zone, said radiation beam shaped by said first and said second radiation blocking devices and said plurality of elements of said second radiation blocking device. - View Dependent Claims (7, 8)
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9. A treatment planning system, comprising:
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input means for inputting treatment data defining a radiation therapy treatment to be delivered by a radiation therapy device having independently rotatable X- and Y-collimator jaws, said X-collimator jaws further having a plurality of elements, said plurality of elements independently movable across a beam axis; and
output means for generating, based on said treatment data, a plurality of sets of segment data, each of said sets of segment data including data for positioning said X- and Y-collimator jaws and said plurality of elements to deliver a portion of said radiation therapy treatment. - View Dependent Claims (10, 11)
optimization means for optimizing said plurality of sets of segment data to combine individual ones of said sets of segment data to reduce a total number of said plurality of sets of segment data.
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11. The treatment planning system of claim 10, wherein said optimization means generates at least a first set of segment data in which at least one set of opposing elements of said X-collimator jaws are positioned to abut each other.
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12. A radiation therapy system, comprising:
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a treatment planning computer, operable to generate a plurality of treatment segments defining a treatment plan, said treatment planning computer in communication with a radiation therapy device having a control system;
a radiation therapy device in communication with said treatment planning computer and configured to receive said plurality of treatment segments;
said control system configured to sequentially operate said radiation therapy device based on control data in said plurality of treatment segments torotate a first and a second radiation blocking device about an axis to produce a portal shape, said second radiation blocking device comprising a pair of jaws independently rotatable of said first radiation blocking device and having a plurality of elements disposed thereon that are individually movable across said axis;
adjust a position of at least one of said plurality of elements to abut an opposing one of said plurality of elements to adjust said portal shape; and
direct a radiation beam along said axis toward a treatment zone, said radiation beam shaped by said first and said second radiation blocking devices and said plurality of elements of said second radiation blocking device.
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Specification