Scanning system
First Claim
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1. A particle therapy system comprising:
- a particle accelerator to output a beam of charged particles, the particle accelerator being configured to produce the beam in accordance with a radio frequency (RF) cycle; and
a scanning system to perform scanning on at least part of an irradiation target, the scanning system comprising;
a scanning magnet to move the beam across the at least part of the irradiation target during scanning, where movement of the beam is based on a current of the scanning magnet; and
a control system (i) to control the current of the scanning magnet independently of the RF cycle in order to move the beam across the at least part of the irradiation target to deliver doses of charged particles, (ii) for positions on the irradiation target at which the particle beam delivers a dose of charged particles, to store information identifying a location and an amount of the dose delivered, (iii) to compare a cumulative dose delivered at each position to a target cumulative dose, and (iv) if the cumulative dose does not match the target cumulative dose at specific positions, to control the current of the scanning magnet in order to move the beam so as to deliver additional dose to the specific positions.
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Abstract
An example particle therapy system includes: a particle accelerator to output a beam of charged particles; and a scanning system to scan the beam across at least part of an irradiation target. An example scanning system includes: a scanning magnet to move the beam during scanning; and a control system (i) to control the scanning magnet to produce uninterrupted movement of the beam over at least part of a depth-wise layer of the irradiation target so as to deliver doses of charged particles to the irradiation target; and (ii) to determine, in synchronism with delivery of a dose, information identifying the dose actually delivered at different positions along the depth-wise layer.
1035 Citations
34 Claims
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1. A particle therapy system comprising:
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a particle accelerator to output a beam of charged particles, the particle accelerator being configured to produce the beam in accordance with a radio frequency (RF) cycle; and a scanning system to perform scanning on at least part of an irradiation target, the scanning system comprising; a scanning magnet to move the beam across the at least part of the irradiation target during scanning, where movement of the beam is based on a current of the scanning magnet; and a control system (i) to control the current of the scanning magnet independently of the RF cycle in order to move the beam across the at least part of the irradiation target to deliver doses of charged particles, (ii) for positions on the irradiation target at which the particle beam delivers a dose of charged particles, to store information identifying a location and an amount of the dose delivered, (iii) to compare a cumulative dose delivered at each position to a target cumulative dose, and (iv) if the cumulative dose does not match the target cumulative dose at specific positions, to control the current of the scanning magnet in order to move the beam so as to deliver additional dose to the specific positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A particle therapy system comprising:
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a particle accelerator to output a beam of charged particles, the particle accelerator being configured to produce the beam in accordance with a radio frequency (RF) cycle; and a scanning system to perform scanning on least part of an irradiation target, the scanning system comprising; a scanning magnet to move the beam across the at least part of the irradiation target during scanning, where movement of the beam is based on a current of the scanning magnet; and a control system (i) to control the current of the scanning magnet independently of the RF cycle in order to move the beam across the at least part of the irradiation target so as to deliver doses of charged particles to positions on the irradiation target; and
(ii) to determine, in synchronism with delivery of a dose of charged particles to a position on the irradiation target, information identifying an amount of the dose actually delivered to the position. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification