System and method for dose monitoring in an intensity modulated radiation treatment system
First Claim
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1. A radiation therapy device, comprising:
- means for delivering radiation to a body;
a radiation monitor configured to monitor said radiation during an ON condition and a PAUSE condition; and
a controller configured to provide a signal representing that one or more predetermined conditions related to said radiation during said PAUSE condition has exceeded a predetermined threshold.
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Abstract
A system and method for radiation therapy delivery. A radiation therapy device according to the present invention is configured to monitor for instantaneous dose rate and accumulated dose even during conditions when the high voltage modulator is decoupled. If either the dose rate or the accumulated dose exceed a predetermined threshold, an interlock will be asserted to shut down the radiation treatment device.
42 Citations
28 Claims
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1. A radiation therapy device, comprising:
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means for delivering radiation to a body; a radiation monitor configured to monitor said radiation during an ON condition and a PAUSE condition; and a controller configured to provide a signal representing that one or more predetermined conditions related to said radiation during said PAUSE condition has exceeded a predetermined threshold. - View Dependent Claims (2, 3, 4, 6, 15, 16, 17, 18)
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5. A radiation therapy device, comprising:
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means for delivering radiation to a body; means for monitoring said radiation during an ON condition and a PAUSE condition, said monitoring means including means for monitoring instantaneous dose rate during said PAUSE state; and means for providing a signal representing that a dose rate related to said radiation has exceeded a predetermined threshold, wherein said providing means includes means for comparing said instantaneous dose rate to a predetermined value.
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7. A radiation therapy device, comprising:
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means for delivering radiation to a body; means for monitoring said radiation during an ON condition and a PAUSE condition, said monitoring means including means for monitoring an accumulated dose level during said PAUSE state; and means for providing a signal representing that an accumulated dose related to said radiation has exceeded a predetermined threshold, wherein said monitoring means includes means for comparing said accumulated dose level to a predetermined value.
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8. A method for operating a radiation therapy device, comprising:
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delivering radiation to a body; monitoring said radiation during an ON condition and a PAUSE condition; and providing a signal representing that one or more predetermined conditions related to said radiation has exceeded a predetermined threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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19. A radiation therapy device, comprising:
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a radiation source for delivering radiation to a body; a radiation monitor configured to monitor said radiation during a PAUSE condition; and a controller configured to provide a signal representing that one or more predetermined conditions related to said radiation during said PAUSE condition has exceeded a predetermined threshold. - View Dependent Claims (20, 21, 22, 23)
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24. A radiation therapy device, comprising:
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a radiation source for delivering radiation to a body; and at least one controller configured to provide a control signal if radiation is detected during a PAUSE condition. - View Dependent Claims (25, 26, 27, 28)
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Specification