Particle beam irradiation apparatus, treatment planning unit, and particle beam irradiation method
First Claim
1. A particle beam irradiation apparatus comprising:
- an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator; and
a controller that stops the irradiation of the charged particle beam from the beam delivery apparatus, and that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam, start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and perform irradiations of the charged particle beam with respect to at least one said irradiation position a plurality of times based on treatment planning information.
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Accused Products
Abstract
A particle beam irradiation apparatus includes a synchrotron, two scanning electromagnets, an beam delivery apparatus for outputting an ion beam extracted from the synchrotron, and an accelerator and transport system controller, and a scanning controller. These controllers stop the output of the ion beam from the beam delivery apparatus; in a state where the output of the ion beam is stopped, change the irradiation position of the ion beam by controlling the scanning electromagnets; and after this change, control the scanning electromagnets to start the output of the ion beam from the beam delivery apparatus and to perform irradiations of the ion beam to at least one irradiation position a plurality of times based on treatment planning information.
92 Citations
54 Claims
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1. A particle beam irradiation apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator; and
a controller that stops the irradiation of the charged particle beam from the beam delivery apparatus, and that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam, start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and perform irradiations of the charged particle beam with respect to at least one said irradiation position a plurality of times based on treatment planning information. - View Dependent Claims (2, 3)
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4. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator; and
a controller that controls the charged particle beam scanning unit to perform irradiations of the charged particle beam with respect to at least one irradiation position to be irradiated with the charged particle beam a plurality of times based on treatment planning information, and that controls the charged particle beam scanning unit so that the irradiation dose of the charged particle beam with respect to the irradiation position that is to be irradiated the plurality of times becomes no more than the respective set irradiation doses with respect to the plurality of times of irradiations.
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5. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the acceleration;
a beam transport unit for introducing the charged particle beam extracted from the accelerator into the beam delivery apparatus;
a first controller that stops the output of the charged particle beam from the beam delivery apparatus, and that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam, start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and perform irradiations of the charged particle beam to at least one said irradiation position a plurality of times based on treatment planning information; and
a second controller that, when an irradiation end signal of the charged particle beam with respect to a set portion of the irradiation position is inputted from the first controller, controls a first element at least provided in a beam transport unit to introduce the charged particle beam that has been changed in energy with respect to the beam before inputting the irradiation end signal, into the beam delivery apparatus. - View Dependent Claims (6, 7, 8)
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9. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the acceleration;
an irradiation dose detector that detects the irradiation dose of the charged particle beam applied to an irradiation position in a target; and
a controller that controls the irradiation of the charged particle beam to the irradiation position so that the irradiation dose applied to the irradiation position becomes a set irradiation dose, in a state where the irradiation dose applied to the irradiation position during the time period from the outputting of a beam extraction stop signal at the time when the irradiation dose detected by the irradiation dose detector reaches the set irradiation dose up to the extraction stop of the charged particle beam from the accelerator, is added. - View Dependent Claims (12, 15, 18)
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10. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the acceleration;
an irradiation dose detector that detects an irradiation dose of the charged particle beam applied to the irradiation position in a target; and
a controller that controls the irradiation of the charged particle beam to the irradiation position so that the irradiation dose obtained by adding the irradiation dose applied to the irradiation position by the charged particle beam extracted again from the accelerator, to the irradiation dose applied to the irradiation position of the charged particle beam during the time period from the outputting of a beam extraction stop signal at the time when the irradiation dose detected by the irradiation dose detector reaches a set irradiation dose up to the extraction stop of the charged particle beam from the accelerator, becomes the set irradiation dose. - View Dependent Claims (13, 16, 19)
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11. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the acceleration;
an irradiation dose detector that detects the charged particle beam applied to an irradiation position in a target and that outputs a pulse signal; and
a controller that counts pluses of a pulse signal outputted from the irradiation dose detector due to the charged particle beam applied to the irradiation position, that stores the count number of the pulses, that clears the count number when the count number reaches a set count number, and that controls the irradiation of the charged particle beam to another irradiation position situated next to said irradiation position so that the count number with respect to said other irradiation position become a set count number, in a state where the count number of the pulses of the pulse signal generating due to the charged particle beam applied to the irradiation position during the time period from the time when the count number reaches the set count number up to the time when the extraction stop of the charged particle beam from the accelerator, is added. - View Dependent Claims (14, 17, 20)
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21. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator; and
a controller that stops the irradiation of the charged particle beam from the beam delivery apparatus, that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam and to start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and that determines the occurrence of an abnormality based on an elapsed time from the irradiation start of the charged particle beam with respect to one said irradiation position. - View Dependent Claims (23, 25)
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22. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator; and
a controller that stops the irradiation of the charged particle beam from the beam delivery apparatus, that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam and to start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and that outputs an abnormality occurrence signal when the elapsed time from the irradiation start of the charged particle beam with respect to one said irradiation position has passed a set time. - View Dependent Claims (24, 26)
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27. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator;
an irradiation dose detector that detects the charged particle beam applied to the irradiation position in a target and that outputs an pulse signal; and
a controller that stops the irradiation of the charged particle beam from the beam delivery apparatus, that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam and to start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and that determines the occurrence of an abnormality using the irradiation dose detected by the irradiation detector and a second set irradiation dose larger than respective first set irradiation doses with respect to a plurality of irradiation positions in the target. - View Dependent Claims (29, 31)
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28. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator;
an irradiation dose detector that detects the charged particle beam applied to the irradiation position in a target and that outputs a pulse signal; and
a controller that stops the irradiation of the charged particle beam from the beam delivery apparatus, that, in a state where the irradiation of the charged particle beam is stopped, controls the charged particle beam scanning unit to change the irradiation position of the charged particle beam and to start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and that outputs an abnormality occurrence signal when the dose detected by the irradiation dose detector exceeds a second set irradiation dose larger than the largest first set irradiation dose with respect to a plurality of irradiation positions in the target. - View Dependent Claims (30, 32)
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33. A particle beam emitting apparatus comprising:
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an accelerator for extracting a charged particle beam;
an beam delivery apparatus having a charged particle beam scanning unit and irradiating the charged particle beam extracted from the accelerator; and
a first controller that performs control to decelerate the charged particle beam in the accelerator when the irradiation of the charged particle beam with respect to one of a plurality of layer regions that are different in irradiation energy from each other in a target to be irradiated with the charged particle beam from the beam delivery apparatus, has been completed. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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41. A treatment planning unit for creating a treatment plan to perform the treatment with respect to an affected part, the treatment planning unit comprising:
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an input unit;
a computing unit that sets a plurality of layer regions that are different in irradiation energy from each other in the irradiation direction of a charged particle beam, in a target including an affected part set using tomography image information including information on the affected part, that sets a plurality of irradiation positions of the charged particle beam in each of these layer regions, that using an irradiation dose and a reference irradiation dose with respect to each irradiation position set in each layer region, sets the number of times of irradiations of the charged particle beam with respect to each of the irradiation regions set in each of the layer regions, and that sets a plurality of number of times of irradiations with respect to at least one said irradiation position in the layer region to create a treatment plan information with respect to the affected part; and
a display unit for displaying the treatment planning information. - View Dependent Claims (42)
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43. A method for irradiating a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the steps of:
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stopping the irradiation of the charged particle beam from the beam delivery apparatus; and
in this irradiation stop state, controlling the charged particle beam scanning unit to change the irradiation position of the charged particle beam, start the irradiation of the charged particle beam from the beam delivery apparatus after said change, and perform irradiations of the charged particle beam with respect to at least one said irradiation position a plurality of times. - View Dependent Claims (44, 45, 46, 47, 48)
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49. A method for irradiating a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the steps of:
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detecting the irradiation dose of the charged particle beam applied to the irradiation position in a target; and
irradiating the charged particle beam from the beam delivery apparatus to the irradiation position until the irradiation dose at the irradiation position becomes a set irradiation dose, in a state where the irradiation dose applied to the irradiation position during the time period from the outputting of a beam extraction stop signal at the time when the detected irradiation dose reaches the set irradiation dose up to the extraction stop of the charged particle beam from the accelerator, is added.
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50. A method for irradiating a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the steps of:
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detecting the irradiation dose of the charged particle beam applied to the irradiation position in a target; and
irradiating the charged particle beam from an beam delivery apparatus to the irradiation position until the irradiation dose obtained by adding the irradiation dose applied to the irradiation position by the charged particle beam extracted again from the accelerator, to the irradiation dose applied to the irradiation position of the charged particle beam during the time period from the outputting of a beam e extraction stop signal at the time when the detected irradiation dose reaches a set irradiation dose up to the extraction stop of the charged particle beam from the accelerator, becomes the set irradiation dose.
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51. A method for irradiating a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the steps of:
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stopping the irradiation of the charged particle beam from the beam delivery apparatus;
in this irradiation stop state, changing the irradiation position of the charged particle beam by controlling the charged particle beam scanning unit;
after this change, starting the irradiation of the charged particle beam from the beam delivery apparatus; and
determining the occurrence of an abnormality based on an elapsed time from the irradiation start of the charged particle beam with respect to one said irradiation position.
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52. A method for irradiating a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the steps of:
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stopping the irradiation of the charged particle beam from the beam delivery apparatus;
in this irradiation stop state, controlling the charged particle beam scanning unit to change the irradiation position of the charged particle beam;
after this change, starting the irradiation of the charged particle beam from the beam delivery apparatus; and
outputting an abnormality occurrence signal when the elapsed time from the irradiation start of the charged particle beam with respect to one said irradiation position has passed the set elapsed time.
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53. A method for extracting a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the steps of:
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stopping the extraction of the charged particle beam from the beam delivery apparatus, in this extraction stop state, controlling the charged particle beam scanning unit to change the irradiation position of the charged particle beam; and
after this change, starting the extraction of the charged particle beam from the beam delivery apparatus, and determining the occurrence of an abnormality using the detected irradiation dose and a second set irradiation dose larger than respective first set irradiation doses with respect to a plurality of irradiation positions in the target.
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54. A method for extracting a charged particle beam extracted by an accelerator from an beam delivery apparatus having a charged particle beam scanning unit, the method comprising the step of decelerating the charged particle beam in the accelerator when the irradiation of the charged particle beam to one of a plurality of layer regions that are different in irradiation energy from each other in the target to be irradiated with the charged particle beam from the beam delivery apparatus, has been completed.
Specification