Radioactive beam irradiation method and apparatus taking movement of the irradiation area into consideration
First Claim
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1. A radiation irradiation method, comprising the steps of:
- detecting a signal representing a physical activity of a patient having a diseased area to be irradiated with radiation, said physical activity being an activity which causes periodic movement of the diseased area, andcontrolling a timing of radiation irradiation of said diseased area so that said irradiation is synchronized with said detected signal.
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Abstract
A radiation irradiation method and an apparatus enables effective radiation irradiation even in the case of a diseased part changing its position due to physical activity, such as breathing and the heart beat of the patient, with a simplified apparatus. Initially, the position change of the diseased part and the physical activity of the patient are measured concurrently, and a relationship therebetween is defined as a corresponding function. Next, along with the detection of the physical activity of the patient, radiation therapy is performed, in which the control of the radiation irradiation is carried out in accordance with the corresponding function.
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Citations
9 Claims
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1. A radiation irradiation method, comprising the steps of:
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detecting a signal representing a physical activity of a patient having a diseased area to be irradiated with radiation, said physical activity being an activity which causes periodic movement of the diseased area, and controlling a timing of radiation irradiation of said diseased area so that said irradiation is synchronized with said detected signal. - View Dependent Claims (2)
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3. A radiation irradiation apparatus, comprising:
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a detector for measuring a time change of a physical activity of a patient having a diseased area to be irradiated with radiation, said physical activity being an activity which causes periodic movement of the diseased area; an information processing apparatus, connected to a memory apparatus for storing a relation between a detected signal from said detector indicating a time change of physical activity of the patient and a position change of said diseased area, for determining a radiation irradiation timing based on said detected signal from said detector and information from said memory means; and radiation control means for controlling timing of irradiation of said diseased area in response to an output signal from said information processing apparatus.
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4. A radiation irradiation apparatus, comprising:
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a particle accelerator for accelerating a charged particle; and an irradiation apparatus for irradiating said accelerated charged particle from said particle accelerator on a specified area of a patient; a display apparatus for displaying an operation state of said particle accelerator; and a display apparatus for displaying a time change of physical activity of said patient, said physical activity being an activity which causes periodic movement of said specified area which said charged particle is irradiated.
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5. A particle beam irradiation apparatus, comprising:
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a particle accelerator for repeating periodically an operation sequence for injection, acceleration and ejection of a particle; an irradiation apparatus for irradiating said accelerated particle on a specified area of a patient; and means for initiating said operation sequence of said particle accelerator at a designated timing in response to the breathing of said patient. - View Dependent Claims (6, 7, 8, 9)
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Specification