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公开(公告)号：US20220152421A1
公开(公告)日：2022-05-19
申请号：US17593525
申请日：2020-03-19
申请人： Elekta Limited
发明人： Alessandra Chiap , German Vega , Keith Richardson , Stuart Reed , Chris Flint , Marcelo Jordao
摘要： There is provided a particle accelerator comprising a waveguide for accelerating electrons along an acceleration path and a magnetron configured to supply a radiofrequency electromagnetic field to the waveguide. An oscilloscope is connected to the magnetron and configured to provide signals indicative of the magnetron output. A processor is configured to receive signals from the oscilloscope and to send data to a central server.
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公开(公告)号：US20230376652A1
公开(公告)日：2023-11-23
申请号：US18246288
申请日：2021-09-23
申请人： Elekta Limited
发明人： Anurag GEHLOT , Chris Flint
摘要： Disclosed herein is a computer-implemented method of determining a model for predictive maintenance of a magnetron for a particle accelerator for a radiotherapy device. The method comprises collating lifetime data of each of a plurality of magnetrons; analysing the data to determine a set of values indicative of the need for magnetron replacement; and outputting the set of determined values to form a model for predictive maintenance of a magnetron.
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公开(公告)号：US11565132B2
公开(公告)日：2023-01-31
申请号：US17250654
申请日：2019-08-16
申请人： Elekta Limited
发明人： Chris Flint , Keith Richardson , Marcelo Jordao , Mark Holmes , Alessandra Chiap
摘要： Disclosed herein is a method of determining the nature of a fault in a radiotherapy device comprising a linear accelerator. The radiotherapy device is configured to provide therapeutic radiation to a patient. The radiotherapy device comprises a vacuum tube comprising an electron gun, a waveguide configured to accelerate electrons emitted by the electron gun toward a target to produce said radiation, and a flight tube. The electron gun is located at a first end of the vacuum tube and the flight tube is located at a second end of the vacuum tube. The radiotherapy device further comprises a first and a second sensor. The first sensor is configured to provide signals indicative of pressure at a first region inside the vacuum tube and the second sensor is configured to provide signals indicative of pressure at a second region inside the vacuum tube. The first region is closer to the first end of the vacuum tube than the second region is. The method comprises processing a first value derived from signals from the first sensor and a second value derived from signals from the second sensor. The first value is indicative of pressure at the first region inside the vacuum tube, and the second value is indicative of pressure at the second region inside the vacuum tube. Processing the first and second value comprises comparing the first value with a first threshold and comparing the second value with a second threshold; and, based on the processing of the signals, determining that the nature of the fault is associated with the flight tube.
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公开(公告)号：US20220280813A1
公开(公告)日：2022-09-08
申请号：US17597485
申请日：2020-07-09
申请人： Elekta Limited
发明人： Chris Flint , German Vega , Keith Richardson , Alessandra Chiap
摘要： Disclosed herein is a method of determining whether repair or replacement of a multi-leaf collimator for a radiotherapy device should be scheduled. The multi-leaf collimator comprises a leaf bank comprising a plurality of leaves, a leaf bank support configured to support the leaf bank, a leaf bank guide, and a guide actuation means configured to extend the leaf bank along the leaf bank guide into the path of a radiation beam. The device further comprises current sensing means configured to produce a signal indicative of the current supplied to the guide actuation means. The method comprises receiving signals from the current sensing means; processing the signals; and based on the processing, determining whether repair or replacement of the multi-leaf collimator should be scheduled.
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公开(公告)号：US20220280814A1
公开(公告)日：2022-09-08
申请号：US17632748
申请日：2020-08-05
申请人： Elekta Limited
发明人： Chris Flint , German Vega , Keith Richardson , Alessandra Chiap
摘要： Disclosed herein is a method of determining the nature of a fault in a radiotherapy device comprising a linear accelerator. The radiotherapy device is configured to provide therapeutic radiation to a patient. The radiotherapy device comprises a bending magnet assembly arranged to direct a beam of electrons toward a target to produce said radiation. A first sensor is configured to provide signals indicative of voltage at a first region of the bending magnet assembly. The method comprises receiving voltage values derived from the signals from the first sensor and processing the voltage values; wherein processing the voltage values comprises determining whether the voltage values meet at least one threshold criterion; and, based on the processing of the signals, determining whether the nature of the fault is associated with the bending magnet.
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公开(公告)号：US20210370098A1
公开(公告)日：2021-12-02
申请号：US17309048
申请日：2019-10-14
申请人： Elekta Limited
发明人： Chris Flint , Keith Richardson , Marcelo Jordao , Alessandra Chiap , Mark Holmes
IPC分类号： A61N5/10 , G16H40/40 , H01J3/02 , G01R19/165
摘要： Described is a method of determining whether repair or replacement of an electron gun of a radiotherapy device should be scheduled. The radiotherapy device comprises a linear accelerator and is configured to provide therapeutic radiation to a patient. The radiotherapy device comprises a vacuum tube comprising the electron gun, a waveguide configured to accelerate electrons emitted by the electron gun toward a target to produce said radiation. The radiotherapy device comprises also comprises a current sensor, the current sensor being configured to provide signals indicative of current supplied to the electron gun. The method comprises receiving a current value, processing the current value, and based on the processing of the current value, determining whether repair or replacement of the electron gun should be scheduled. Processing the current value comprises determining whether the current value meets at least one threshold criterion, and determining whether the current value has changed by at least a threshold amount in a particular time period.
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公开(公告)号：US20210299478A1
公开(公告)日：2021-09-30
申请号：US17250654
申请日：2019-08-16
申请人： Elekta Limited
发明人： Chris Flint , Keith Richardson , Marcelo Jordao
摘要： Disclosed herein is a method of determining the nature of a fault in a radiotherapy device comprising a linear accelerator. The radiotherapy device is configured to provide therapeutic radiation to a patient. The radiotherapy device comprises a vacuum tube comprising an electron gun, a waveguide configured to accelerate electrons emitted by the electron gun toward a target to produce said radiation, and a flight tube. The electron gun is located at a first end of the vacuum tube and the flight tube is located at a second end of the vacuum tube. The radiotherapy device further comprises a first and a second sensor. The first sensor is configured to provide signals indicative of pressure at a first region inside the vacuum tube and the second sensor is configured to provide signals indicative of pressure at a second region inside the vacuum tube. The first region is closer to the first end of the vacuum tube than the second region is. The method comprises processing a first value derived from signals from the first sensor and a second value derived from signals from the second sensor. The first value is indicative of pressure at the first region inside the vacuum tube, and the second value is indicative of pressure at the second region inside the vacuum tube. Processing the first and second value comprises comparing the first value with a first threshold and comparing the second value with a second threshold; and, based on the processing of the signals, determining that the nature of the fault is associated with the flight tube.
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