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公开(公告)号：US11109473B2
公开(公告)日：2021-08-31
申请号：US16969725
申请日：2019-02-19
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Gereon Vogtmeier
Abstract: An X-ray source (10) for emitting an X-ray beam (101) is proposed. The X-ray source (10) comprises an anode (12) and an emitter arrangement (14) comprising a cathode (16) for emitting an electron beam (15) towards the anode (12) and an electron optics (18) for focusing the electron beam (15) at a focal spot (20) on the anode (12). The X-ray source (10) further comprises a controller (22) configured to determine a switching action of the emitter arrangement (14) and to actuate the emitter arrangement (14) to perform the switching action, the switching action being associated with a change of at least one of a position of the focal spot (20) on the anode (12), a size of the focal spot (20), and a shape of the focal spot (20). The controller (22) is further configured to predict before the switching action is performed, based on the determined switching action, the size and the shape of the focal spot (20) expected after the switching action. Further, the controller (22) is configured to actuate the electron optics (18) to compensate for a change of the size and the shape of the focal spot (20) induced by the switching action.
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公开(公告)号：US10365380B2
公开(公告)日：2019-07-30
申请号：US15748750
申请日：2016-07-29
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Ewald Roessl
Abstract: The invention relates a photon counting device and method for counting photon interactions in a piece of converter material and addressing the issue of charge sharing. The occurrence of a charge sharing event is already detected upon the onset of the pulse, taking into consideration an onset of a pulse in a neighboring pixel within a preferably very short coincidence window. According to the invention, it is detected whether a pulse is being processed and one or more neighboring pixels are scouted to decide whether a simultaneous interaction has been registered within a very short coincidence window.
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公开(公告)号：US10267929B2
公开(公告)日：2019-04-23
申请号：US15770796
申请日：2016-11-16
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Frank Verbakel
Abstract: Method of pixel volume confinement in a crystal of an energy resolving radiation detector, preferably an X-ray detector, more preferably a Computed Tomography detector, the crystal having a cathode side and an anode side, comprising: a. Inducing a break line (501) in the crystal along a pixel virtual limits b. Passivating the break line.
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公开(公告)号：US10048391B2
公开(公告)日：2018-08-14
申请号：US15100659
申请日：2014-11-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Gereon Vogtmeier
Abstract: An imaging detector module (112) of an imaging system includes at least one detector pixel (114) and self-diagnosing circuitry (116). The self-diagnosing circuitry includes a microprocessor (202) and at least measurement device (210). The microprocessor controls the at least measurement device to measure at least one parameter of the at least one detector pixel, wherein a value of the at least one parameter is indicative of a health state of the imaging system. A method includes employing self-diagnosing circuitry embedded in an imaging detector module to measure at least one parameter of at least one detector pixel of the imaging detector module. A value of the at least one parameter is indicative of a health state of the imaging detector. The method further includes generating, with the self diagnosing circuitry, a signal indicating a health state of the imaging detector module based on the measured at least one parameter.
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公开(公告)号：US09664558B2
公开(公告)日：2017-05-30
申请号：US14440609
申请日：2013-11-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann , Roger Steadman Booker
CPC classification number: G01J1/44 , G01J2001/4446 , G01T1/00 , G01T1/24 , H01L31/02966 , H01L31/085 , H01L31/09 , H01L31/1832
Abstract: The invention relates to radiation detection with a directly converting semiconductor layer for converting an incident radiation into electrical signals. Sub-band infra-red (IR) irradiation considerably reduces polarization in the directly converting semi-conductor material when irradiated, so that counting is possible at higher tube currents without any baseline shift. An IR irradiation device is integrated into the readout circuit to which the crystal is flip-chip bonded in order to enable 4-side-buttable crystals.
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Patent Agency Ranking
公开(公告)号：US20140254749A1
公开(公告)日：2014-09-11
申请号：US14350370
申请日：2012-10-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Randall Peter Luhta , Christoph Herrmann
CPC classification number: H05G1/26 , G01N23/046 , G01T1/17 , G01T1/24 , G01T1/247 , G01T1/2985 , G01T7/005
Abstract: An imaging system (300) includes a detector array (314) with direct conversion detector pixels that detect radiation traversing an examination region of the imaging system and generate a signal indicative of the detected radiation, a pulse shaper (316) configured to alternatively process the signal indicative of detected radiation generated by the detector array or a set of test pulses having different and known heights that correspond to different and known energy levels and to generate output pulses having heights indicative of the energy of the processed detected radiation or set of test pulses, and a thresholds adjuster (330) configured to analyze the heights of the output pulses corresponding to the set of test pulses in connection with the heights of set of test pulses and a set of predetermined fixed energy thresholds and generate a threshold adjustment signal indicative of a baseline based on a result of the analysis.
Abstract translation: 成像系统（300）包括具有直接转换检测器像素的检测器阵列（314），其检测穿过成像系统的检查区域并产生指示检测到的辐射的信号的辐射;脉冲整形器（316），被配置为交替地处理 指示由检测器阵列产生的检测到的辐射的信号或具有对应于不同和已知能级的不同和已知高度的一组测试脉冲，并且产生具有指示经处理的检测到的辐射或一组测试脉冲的能量的高度的输出脉冲 ，以及阈值调整器（330），其被配置为分析与所述一组测试脉冲相对应的输出脉冲的高度以及一组预定的固定能量阈值，并且生成指示 基于分析结果的基准。
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公开(公告)号：US11740368B2
公开(公告)日：2023-08-29
申请号：US17781151
申请日：2020-12-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Amir Livne
IPC: G01T1/24 , H01L27/146
CPC classification number: G01T1/243 , G01T1/241 , H01L27/14661
Abstract: The present invention relates to a photon counting detector comprising a plurality of detector tiles. Each detector tile comprises a sensor material layer (20), an integrated circuit (30), an input/output connection or flex (50), a high voltage electrode or foil (60), and an anti scatter grid (10). The input/output connection or flex is connected to the integrated circuit. The integrated circuit is configured to readout signals from the sensor material layer. The anti scatter grid is positioned adjacent to a surface of the sensor material layer. The high voltage electrode or foil extends across the surface of the sensor material layer and is configured to provide a bias voltage to the surface of the sensor material layer. The high voltage electrode or foil comprises at least one tail section (70). Relating to the photon counting detector and the plurality of detector tiles, the high voltage electrode or foil of a first detector tile is configured to make an electrical connection with the high voltage electrode or foil of an adjacent detector tile via one or more tail sections of the at least one tail section of the first detector tile and/or via one or more tail sections of the at least one tail section of the adjacent detector tile.
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公开(公告)号：US11506802B2
公开(公告)日：2022-11-22
申请号：US17274258
申请日：2019-09-10
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Johannes Wilhelmus Maria Jacobs , Rolf Karl Otto Behling , Roger Steadman Booker , Gereon Vogtmeier , Onno Jan Wimmers
IPC: G01T1/36 , G01T1/20 , H01L31/0256 , G01T1/29 , G01T1/24
Abstract: The present invention relates to a radiation detector (100) comprising: i) a substrate (110); ii) a sensor, which is coupled to the substrate, the sensor comprising a first array (120) of sensor pixels, a second array (130) of signal read-out elements, and an electronic circuitry which is configured to provide image data based on signals received from the signal read-out elements; iii) a transducer, which is coupled to the substrate and to the sensor, the transducer comprising a third array (140) of subpixels, wherein at least two subpixels are assigned to one sensor pixel; wherein the second array of signal read-out elements and the third array of subpixels correspond to each other; wherein each of the subpixels comprises a radiation conversion material.
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公开(公告)号：US11448781B2
公开(公告)日：2022-09-20
申请号：US17263916
申请日：2019-08-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Ewald Roessl
Abstract: The present invention relates to a photon counting detector comprising a first direct conversion layer (10) comprising a low-absorption direct conversion material (11) for converting impinging high-energy electromagnetic radiation (100) into a first count signal and first electrical contacts (12), a second direct conversion layer (20) comprising a high-absorption direct conversion material (21) for converting impinging high-energy electromagnetic radiation (100) into a second count signal and second electrical contacts (22), said high-absorption direct conversion material having a higher absorption than said low-absorption direct conversion material, and a carrier layer (30, 30a, 30b) comprising first and second terminals (31, 32) in contact with the first and second electrical contacts and processing circuitry (35) configured to correct, based on the first count signal, the second count signal for errors, wherein said first direct conversion layer and the second direct conversion layer are arranged such that the high-energy electromagnetic radiation transmits the first direct conversion layer before it hits the second direct conversion layer.
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公开(公告)号：US11178346B2
公开(公告)日：2021-11-16
申请号：US16960787
申请日：2019-01-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Ewald Roessl
IPC: H04N5/32 , A61B6/00 , G01N23/046
Abstract: A signal processing system (SPS) and related method. The system comprises an input interface (IN) for receiving at least two data sets, comprising a first data set and second data set. The first data set is generated by an X-ray detector sub-system (XDS) at a first pixel size and the second data set generated at a second pixel size different from the first pixel size. An estimator (EST) is configured to compute, based on the two data sets, an estimate of a charge sharing impact.
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