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公开(公告)号：US12053649B2
公开(公告)日：2024-08-06
申请号：US18237506
申请日：2023-08-24
发明人： Janne I. Nord , Esa Kuusela , Jarkko Y. Peltola , Juha Kauppinen
CPC分类号： A61N5/1045 , A61N5/1047 , G21K1/046 , A61N5/1036
摘要： A multi-layer multi-leaf collimation system includes at least a two layers of collimation leaves. The first multi-leaf collimator layer is configured to primarily perform a first function to affect a radiation beam traveling from a radiation source to a target and a second multi-leaf collimator layer is configured to primarily perform a second function, different from the first function, to affect the radiation beam for the administration of a treatment plan.
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公开(公告)号：US20240233975A9
公开(公告)日：2024-07-11
申请号：US18475703
申请日：2023-09-27
发明人： Peter J. Rothschild
IPC分类号： G21K1/04
摘要： An x-ray chopper wheel assembly includes a disk chopper wheel and a source-side scatter plate that has a solid cross-sectional area that absorbs x-ray radiation and is substantially smaller than a solid cross-sectional area of the disk chopper wheel. The assembly also includes a support structure that secures the source-side scatter plate substantially parallel to the disk chopper wheel, with a source-side gap between the scatter plate and the disk chopper wheel being a distance that substantially prevents x-ray leakage. An additional, output-side scatter plate may also be provided to reduce x-ray leakage further. Embodiments enable safe operation while significantly reducing weight, which is advantageous for a variety of disk-chopper-wheel-based x-ray scanning systems, especially hand-held x-ray scanners.
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公开(公告)号：US20240194368A1
公开(公告)日：2024-06-13
申请号：US18586409
申请日：2024-02-23
发明人： Bin SONG , Kun YANG , Jian ZHANG
IPC分类号： G21K1/04
CPC分类号： G21K1/046
摘要： An MLC may include a plurality of leaves configured to shape a radiation field, and a plurality of driving assemblies each of which is configured to drive one of the plurality of leaves to a desired target position for shaping the radiation field. The driving assembly associated with a leaf may include a driving component configured to drive the leaf toward a desired first position with a speed exceeding a speed threshold; and a braking component configured to stop the leaf within a time period in response to a determination that the leaf arrives at the desired first position. In some embodiments, the time period of the braking component for stopping the leaf may be less than a time threshold.
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公开(公告)号：US11996210B2
公开(公告)日：2024-05-28
申请号：US17737081
申请日：2022-05-05
发明人： Jin Wang , Donald Walko , Pice Chen
IPC分类号： G21K1/04 , B81B3/00 , H01J37/305
CPC分类号： G21K1/04 , B81B3/0045 , B81B2201/042 , H01J37/3056 , H01J2237/31749
摘要： Typically modulation systems are incapable of performing synchronous modulation for high-energy radiation systems. A method and system for performing high-energy synchronous radiation modulating is described. The method includes providing an oscillatory diffractive element, with the oscillatory diffractive element capable of being oscillated over a range of angles. A radiation source provides radiation to the oscillatory diffractive element. An electrical signal is provided to electrodes that oscillate the oscillatory diffractive element to modulate the radiation. A temperature controller controls the temperature of the oscillatory diffractive element to tune the oscillatory motion of the oscillatory diffractive element.
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公开(公告)号：US11984235B2
公开(公告)日：2024-05-14
申请号：US17502675
申请日：2021-10-15
申请人： Canon U.S.A., Inc.
摘要： Some embodiments of a device comprise a shuttle member, wherein the shuttle member includes a body, wherein the body includes an opening that extends through the body, and wherein at least part of the shuttle is radiopaque; a first actuator; and a second actuator, wherein the first actuator and the second actuator are positioned on opposite sides of the shuttle member, wherein the first actuator is configured to move the shuttle member in a first direction, and wherein the second actuator is configured to move the shuttle member in a second direction that is opposite to the first direction.
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公开(公告)号：US20240136084A1
公开(公告)日：2024-04-25
申请号：US18475703
申请日：2023-09-26
发明人： Peter J. Rothschild
IPC分类号： G21K1/04
摘要： An x-ray chopper wheel assembly includes a disk chopper wheel and a source-side scatter plate that has a solid cross-sectional area that absorbs x-ray radiation and is substantially smaller than a solid cross-sectional area of the disk chopper wheel. The assembly also includes a support structure that secures the source-side scatter plate substantially parallel to the disk chopper wheel, with a source-side gap between the scatter plate and the disk chopper wheel being a distance that substantially prevents x-ray leakage. An additional, output-side scatter plate may also be provided to reduce x-ray leakage further. Embodiments enable safe operation while significantly reducing weight, which is advantageous for a variety of disk-chopper-wheel-based x-ray scanning systems, especially hand-held x-ray scanners.
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公开(公告)号：US11931602B2
公开(公告)日：2024-03-19
申请号：US17227155
申请日：2021-04-09
CPC分类号： A61N5/1081 , A61B6/032 , A61N5/1031 , A61N5/1037 , A61N5/1045 , A61N5/1049 , A61N5/1069 , G21K1/046 , A61B6/06 , A61N5/1039 , A61N5/1043 , A61N2005/1052 , A61N2005/1061 , A61N2005/1063 , A61N5/1065 , A61N2005/1094
摘要： A system including a diagnostic-quality CT scanner for imaging a patient, the diagnostic-quality CT scanner having an imaging isocenter and a radiation therapy device positioned adjacent the diagnostic-quality CT scanner, the radiation therapy device including a gantry carrying a radiation therapy beam source and having a radiation therapy isocenter separate from the imaging isocenter of the diagnostic-quality CT scanner. The system including a couch configured to position the patient for imaging and for radiation therapy by translating the patient between the diagnostic quality CT scanner and the radiation therapy device.
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公开(公告)号：US20240085579A1
公开(公告)日：2024-03-14
申请号：US18243747
申请日：2023-09-08
发明人： Jia Peng Zhu , Li Dong Zhang , Jian Zhang , Ji Feng Zhao , Feng Hai Yu
摘要： A tuning method for a collimator of a CT machine, which, in each cycle of X-ray scan operation and stop, may include determining whether an X-ray is generated from the anode plate; calculating the Z-direction heating displacement of the slot plate during the current scan based on a detected X-ray, driving the slot plate to move by the heating displacement in the Z-direction, calculating the total Z-direction heating displacement of the slot plate at the end of the current scan, calculating the cooling displacement of the slot plate during the current stop based on the stop time of the X-ray, and driving the slot plate to move.
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公开(公告)号：US20240013947A1
公开(公告)日：2024-01-11
申请号：US18349075
申请日：2023-07-07
发明人： Lane Marsden , Peter J. Rothschild
CPC分类号： G21K1/043 , G06T7/0012 , A61B6/4078 , A61B6/4266 , G06T2207/10128
摘要： An x-ray imaging apparatus includes a holdable housing; an x-ray source mounted within the housing and configured to output a fan beam of x-rays; and a hoop chopper wheel rotatably mounted within the housing and comprising an x-ray attenuating material configured to block x-rays of the fan beam. The hoop chopper wheel defines a set of beam apertures of which each aperture is configured to pass therethrough a corresponding angular portion of x-rays from the fan beam, so that rotation of the hoop chopper wheel causes scanning of the corresponding angular portion of x-rays. The x-ray source may be a transmission-type x-ray tube configured to output the fan beam centered in an x-ray extraction direction forming an angle greater than 0 degrees with respect to a longitudinal axis of the x-ray tube.
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10.发明授权公开(公告)号：US11869680B2
公开(公告)日：2024-01-09
申请号：US15941326
申请日：2018-03-30
CPC分类号： G21K1/046 , A61N5/1031 , A61N5/1036 , A61N5/1045
摘要： A control circuit optimizes a radiation treatment plan for a patient treatment volume using an automatically iterating optimization process that optimizes as a function, at least in part, of predetermined cost functions, wherein at least one of the cost functions favors apertures for the multi-leaf collimation system having local curvature that deviates only minimally from a reference curvature. By one approach the control circuit determines the reference curvature as a function, at least in part, of at least one of setting the reference curvature to a static minimal local curvature, a shape of a projective mapping of the treatment volume onto an isocenter plane, and/or a fluence map associated with an amount of radiation to be administered to the treatment volume from a particular direction. By one approach the control circuit dynamically determines when to employ one or more such cost functions.
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