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公开(公告)号：WO2014132232A2
公开(公告)日：2014-09-04
申请号：PCT/IB2014/059334
申请日：2014-02-28
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
Inventor： VERBAKEL, Frank , ENGEL, Klaus Jürgen , NELLISSEN, Antonius Johannes Maria , WIECZOREK, Herfried Karl , VAN GRUNSVEN, Eric Cornelis Egbertus , BLEVIS, Ira Micah , STEADMAN BOOKER, Roger
IPC: G01T1/24
Abstract: The invention relates to a detector (6) for detecting radiation, especially x-ray radiation used in a computed tomography system. The detector comprises a direct conversion material(9) for converting radiation into electrons and holes, which are used for generating an electrical detection signal. The direct conversion material is illuminated with illumination light being broadband visible and/or broadband infrared light for reducing, in particular, eliminating, a polarization of the direct conversion material, which may occur when being traversed by the radiation to be detected and which may reduce the detection performance. By reducing the polarization of the direct conversion material the detection performance can be improved.
Abstract translation: 本发明涉及一种用于检测辐射的检测器（6），特别是用于计算机断层摄影系统中的X射线辐射。 检测器包括用于将辐射转换成电子和空穴的直接转换材料（9），用于产生电检测信号。 直接转换材料被照明为具有宽带可见光和/或宽带红外光的照明光，用于减少特别是消除直接转换材料的极化，当被被检测的辐射穿过时可能发生极化，并且可以减少 检测性能。 通过降低直接转换材料的极化，可以提高检测性能。
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公开(公告)号：WO2014072939A1
公开(公告)日：2014-05-15
申请号：PCT/IB2013/059990
申请日：2013-11-08
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
Inventor： HERRMANN, Christoph , STEADMAN BOOKER, Roger
IPC: G01T1/24
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 semiconductor 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.
Abstract translation: 本发明涉及具有直接转换半导体层的放射线检测，用于将入射辐射转换为电信号。 子带红外（IR）照射显着降低了直接转换半导体材料的照射时的偏振，从而可以在更高的管电流下进行计数，而无任何基线偏移。 将IR照射装置集成到晶体被倒装芯片接合的读出电路中，以便能够实现4面可晶的晶体。
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公开(公告)号：WO2014027260A3
公开(公告)日：2014-02-20
申请号：PCT/IB2013/055817
申请日：2013-07-15
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
Inventor： ROESSL, Ewald , DAERR, Heiner , STEADMAN BOOKER, Roger
IPC: G01T1/17
Abstract: The invention relates to a method and an X-ray detector (100) for detecting incident X-ray photons (X). The X-ray detector (100) comprises at least one sensor unit (105) in which X-ray photons (X) are converted into sensor signals (s) and at least one flux sensor (104) for generating a flux signal(f) related to the flux of photons (X). The sensor signals (s) are corrected based on the flux signal(f). In a preferred embodiment, the sensor signals (s) represent a spectrally resolved pulse counting. The flux sensor (104) may be integrated into an ASIC (103) that is coupled to the sensor unit (105).
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公开(公告)号：WO2014045210A3
公开(公告)日：2014-03-27
申请号：PCT/IB2013/058634
申请日：2013-09-18
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
Inventor： ENGEL, Klaus Jürgen , STEADMAN BOOKER, Roger , HERRMANN, Christoph
IPC: G01T1/24
Abstract: The present invention discloses a pixilated direct conversion photon counting detector with a direct conversion material layer and a pixilated electrode. Individual electrode pixels are segmented into three segments(510, 520, 530), wherein one of the segments (520) is operated at a more electrically repellant value than that of the other two (510, 530). Said other two segments are connected to electric circuitry (610, 611, 620, 630) that is arranged to generate signals which are indicative of a count of electrons or holes that approach each of the respective electrode pixel segments and to subtract the generated signals from each other.
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公开(公告)号：WO2014173812A1
公开(公告)日：2014-10-30
申请号：PCT/EP2014/057907
申请日：2014-04-17
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
Inventor： DAERR, Heiner , ENGEL, Klaus Jürgen , HERRMANN, Christoph , STEADMAN BOOKER, Roger , ROESSL, Ewald
Abstract: The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.
Abstract translation: 本发明涉及一种用于处理由转换器材料中的入射光子（X）产生的电流脉冲（CP）的方法和脉冲处理电路（100），例如在辐射探测器的像素（11）中。 检测到脉冲形状与参考的偏差，并用于识别由于高计数率下的堆积效应和/或相邻像素之间的电荷共享引起的脉冲破坏。 偏移检测可以例如通过用脉冲整形器（110）产生来自当前脉冲（CP）的双极形状脉冲和/或可以彼此比较的不同形状的两个成形脉冲来实现。
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Patent Agency Ranking
公开(公告)号：WO2014091444A1
公开(公告)日：2014-06-19
申请号：PCT/IB2013/060855
申请日：2013-12-12
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
Inventor： ROESSL, Ewald , STEADMAN BOOKER, Roger
IPC: G01T1/17
Abstract: The invention relates to a detector unit (100) for the detection of photons of incident radiation. The detector unit (100) comprises a signal processing circuit (40, 50, 60) for generating signals (V0) that are dependent on the energy of a currently detected photon (X) and at least one processing-parameter (Rf). Moreover, it comprises a flux estimator (70) for estimating the flux of photons and for adjusting the processing- parameter (Rf) based on said estimated flux. The flux estimator (70) receives its input (Vi), from which the flux of photons is estimated, from a processing stage that is independent of the output of the signal processing circuit. In a preferred embodiment, the signal processing circuit is or comprises a shaper (40).
Abstract translation: 本发明涉及一种用于检测入射辐射光子的检测器单元（100）。 检测器单元（100）包括用于产生取决于当前检测到的光子（X）的能量和至少一个处理参数（Rf）的信号（V0）的信号处理电路（40,50,60）。 此外，它包括用于估计光子通量的通量估计器（70），并且用于基于所述估计的通量来调整加工参数（Rf）。 通量估计器（70）从独立于信号处理电路的输出的处理级接收其输入（Vi），从其估计光子通量。 在优选实施例中，信号处理电路是或包括整形器（40）。
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公开(公告)号：WO2022008397A1
公开(公告)日：2022-01-13
申请号：PCT/EP2021/068432
申请日：2021-07-05
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： STEADMAN BOOKER, Roger , RUETTEN, Walter , SIMON, Matthias
Abstract: System (SYS) for supporting X-ray imaging and related methods. The system (SYS) comprises a machine learning module (MLM), a logic (LG) configured to compute output correction information for adjusting an imaging geometry of an X-ray imaging apparatus to achieve a target imaging geometry. A modulator (MOD,L-MOD, H-MOD, S-MOD) is the system is configured to provide a user instruction for imaging geometry adjustment. The user instruction is modulated based on the output correction information. The machine learning module was previously trained on training data including a specific user's responses to previous instructions.
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公开(公告)号：WO2020234110A1
公开(公告)日：2020-11-26
申请号：PCT/EP2020/063465
申请日：2020-05-14
Applicant: KONINKLIJKE PHILIPS N.V.
Abstract: The invention relates to a system for imaging an object in an x-ray imaging mode and in a gamma imaging mode. A radiation detector (1) of the system comprises a conversion unit (202) including a plurality of detector pixels (206 1,...,M ) and generating for each detection event a detection signal indicative of an energy of the event, and a counting unit (203) including for each detector pixel (206 1,...,M ) a plurality of comparators (209 i;1,...,N ) and associating each detection event to one of a plurality of predetermined energy bins based on the detection signals using the comparators (209 i;1,...,N ). In the x-ray imaging mode, the comparators(209 i;1,...,N ) of one pixel (206 1,...,M ), and, in the gamma imaging mode, the comparators (209 i;1,...,N ) of several pixels (206 1,...,M ) are available for the association so that more energy bins are available in the gamma imaging mode than in the x-ray imaging mode.
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公开(公告)号：WO2019137901A1
公开(公告)日：2019-07-18
申请号：PCT/EP2019/050323
申请日：2019-01-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： STEADMAN BOOKER, Roger , ROESSL, Ewald
CPC classification number: G01T1/2928 , G01T1/17
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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公开(公告)号：WO2019063434A1
公开(公告)日：2019-04-04
申请号：PCT/EP2018/075633
申请日：2018-09-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： STEADMAN BOOKER, Roger , DOKANIA, Anand, Kumar , VON BERG, Jens
Abstract: An X-ray imaging system (10) for medical imaging is provided. The imaging system (10) comprises an X-ray source (12) for emitting X-rays, an X-ray detector (14) for detecting X-rays, at least one unmanned aircraft (16), and at least one controller (18) for controlling at least one of the X-ray source (12), the X-ray detector (14), and the at least one unmanned aircraft (16). The X-ray source (12) or the X-ray detector (14) is arranged on the at least one unmanned aircraft (16), wherein the X-ray imaging system (10) is configured to capture an X-ray image of an object (15) arranged between the X-ray source (12) and the X- ray detector (14).
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