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1. 发明申请

WO2009107045A2 SUPPRESSION OF DIRECT DETECTION EVENTS IN X-RAY DETECTORS 审中-公开
标题翻译：在X射线探测器中抑制直接检测事件
公开(公告)号：WO2009107045A2
公开(公告)日：2009-09-03
申请号：PCT/IB2009/050691
申请日：2009-02-19
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , RUETTEN, Walter , POORTER, Tiemen , KIEWITT, Rainer
发明人： RUETTEN, Walter , POORTER, Tiemen , KIEWITT, Rainer
IPC分类号： G01T1/24 , G01T1/29
CPC分类号： G01T1/2018 , H04N5/32 , H04N5/357
摘要： According to an embodiment of the invention, signals coming from a number of pixels or sub-pixels are compared and those signals from pixels or sub-pixels, which are substantially brighter than the other pixels in the comparison, are excluded from contributing to the output signal, to suppress direct detection events in X-ray detectors. For this an X-ray detector apparatus (101) can comprise: -an array (102) of pixel arrangements (303), -each pixel arrangement (303) comprising at least one radiation collection device (311) for converting incident radiation into a collection device signal, -switching arrangements (313, 324, 314, 142; 313, 315, 314, 352, 142; 313, 315, 314; 361) for providing to respectively one output element (141) a signal derived from the collection device signals of a plurality of radiation collection devices (311) of at least one pixel arrangement (303).
摘要翻译：根据本发明的实施例，来自多个像素或子像素的信号被比较，并且比较比较中基本上比其他像素明亮的像素或子像素的那些信号被排除在对输出的贡献之外信号，以抑制X射线检测器中的直接检测事件。为此，X射线检测器装置（101）可以包括： - 像素装置（303）的阵列（102）， - 每个像素布置（303），包括至少一个辐射收集装置（311），用于将入射辐射转换成收集装置信号， - 切换装置（313,324,314,142; 313,315,314,352,142; 313,315,314; 361），用于向所述收集装置信号分配一个输出元件（141）至少一个像素装置（303）的多个辐射收集装置（311）的装置信号。

2. 发明申请

WO2009156927A3 HIGH DYNAMIC RANGE X-RAY DETECTOR WITH IMPROVED SIGNAL TO NOISE RATIO 审中-公开
公开(公告)号：WO2009156927A3
公开(公告)日：2009-12-30
申请号：PCT/IB2009/052640
申请日：2009-06-19
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , RUETTEN, Walter , ALVING, Lex , BUSS, Thomas, F. , POORTER, Tiemen , WOLFS, Peter, B. A.
发明人： RUETTEN, Walter , ALVING, Lex , BUSS, Thomas, F. , POORTER, Tiemen , WOLFS, Peter, B. A.
IPC分类号： G01T1/24
摘要： An x-ray detector and its pixel circuit are described, that allow to cover a large dynamic range with automatic selection of the sensitivity setting in each pixel, thus providing improved signal to noise ratio with all exposure levels. X-ray detectors are required to cover a large dynamic range. The largest exposure determines the required pixel capacitance. However, a large pixel capacitance gives a bad signal to noise ratio with small exposures e.g. in the dark parts of the image. This invention disclosure describes several approaches to provide automatic sensitivity selection in the pixels. This ensures that low signals are stored in a small capacitor or read out with a high sensitivity with corresponding good signal to noise ratio, while larger signals are stored in larger capacitors or are read out with lower sensitivity so that no information is lost.

3. 发明申请

WO2010109355A1 SPECTRAL IMAGING 审中-公开
标题翻译：光谱成像
公开(公告)号：WO2010109355A1
公开(公告)日：2010-09-30
申请号：PCT/IB2010/050729
申请日：2010-02-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , PROKSA, Roland , HERRMANN, Christoph , RUETTEN, Walter
发明人： PROKSA, Roland , HERRMANN, Christoph , RUETTEN, Walter
IPC分类号： A61B6/03 , G06T11/00
CPC分类号： A61B6/4208 , A61B6/032 , A61B6/4014 , A61B6/4042 , A61B6/482 , G01T1/20
摘要： A detector array (110) of an imaging system (100) includes a radiation sensitive detector (114, 116) that detects radiation and generates a signal indicative thereof. A current-to-frequency (I/F) converter (202) converts the signal to a pulse train having a frequency indicative of the signal for an integration period. Circuitry (120) generates a first moment and at least one higher order moment based on the pulse train.
摘要翻译：成像系统（100）的检测器阵列（110）包括检测辐射并产生指示其的信号的辐射敏感检测器（114,116）。电流 - 频率（I / F）转换器（202）将信号转换成具有指示用于积分周期的信号的频率的脉冲串。电路（120）基于脉冲串产生第一时刻和至少一个较高阶矩。

4. 发明申请

WO2008038177A1 COMPENSATION OF LEAKAGE CURRENT AND RESIDUAL SIGNALS FOR INTEGRATING DETECTOR BASED ON DIRECT X-RAY CONVERSION 审中-公开
标题翻译：基于直接X射线转换的集成检测器的泄漏电流和残留信号的补偿
公开(公告)号：WO2008038177A1
公开(公告)日：2008-04-03
申请号：PCT/IB2007/053747
申请日：2007-09-17
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , HERRMANN, Christoph , RUETTEN, Walter , SIMON, Matthias , MENSER, Bernd
发明人： HERRMANN, Christoph , RUETTEN, Walter , SIMON, Matthias , MENSER, Bernd
IPC分类号： H04N5/32 , H04N5/217
CPC分类号： H04N5/35518 , H04N5/32 , H04N5/3597 , H04N5/361
摘要： The application describes an X-ray detector, which uses direct X-ray conversion (DiCo) combined with CMOS pixel circuits. DiCo materials have to be used with high voltage to achieve a high field strength. This makes the sensor prone to leakage currents, which falsify the measured charge result. Moreover, most direct conversion materials suffer from large residual signals that lead to temporal artefacts (ghost images) in an X-ray image sequence. A circuit is described, which senses the sensor's dark current including residual signals from previous exposures before the sensor is exposed (again) to X-ray, and freezes relevant circuit parameters at the end of the sensing phase in such way, that the dark current (leakage current and residual signal) can still be drained during exposure. Therefore, the charge pulses generated in the sensor due to X-ray exposure can be integrated without charges carried by the leakage current or residual signal, thus obtaining a more accurate estimate of the deposited X-ray energy.
摘要翻译：该应用描述了使用与CMOS像素电路结合的直接X射线转换（DiCo）的X射线检测器。必须在高电压下使用DiCo材料才能实现高场强。这使得传感器容易发生泄漏电流，这会造成测量的充电结果。此外，大多数直接转换材料遭受在X射线图像序列中导致时间伪影（幽灵图像）的大残留信号。描述了一种电路，其感测传感器的暗电流，包括在传感器（再次）暴露（X射线）之前的先前曝光的残余信号，并且以这种方式在感测阶段结束时冻结相关的电路参数，（泄漏电流和残留信号）在曝光期间仍然可以排出。因此，由于X射线曝光，在传感器中产生的充电脉冲可以不受泄漏电流或残留信号携带的电荷的积分，从而获得更精确的沉积的X射线能量的估计。

5. 发明申请

WO2005107235A1 ELECTRONIC DEVICE WITH AN ARRAY OF PROCESSING UNITS 审中-公开
标题翻译：具有加工单元阵列的电子设备
公开(公告)号：WO2005107235A1
公开(公告)日：2005-11-10
申请号：PCT/IB2005/051421
申请日：2005-05-02
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , OVERDICK, Michael , RUETTEN, Walter
发明人： OVERDICK, Michael , RUETTEN, Walter
IPC分类号： H04N3/15
CPC分类号： H04N5/347
摘要： The invention concerns electronics devices like X-ray detectors with an array of pixels (303) that can be combined (binned) into binning blocks of mxn pixels. According to the invention the available read-out lines (325) of the device are all connected to different binning blocks in each read-out step, such that up to m binning blocks are addressed simultaneously in the vertical direction when mxn binning is used. In this case, the output signals from the m vertically arranged blocks are distributed over the m read-out columns present int the mxn blocks. In a preferred embodiment, row address lines (361) together with diagonal address lines (371) and a simple activation logic (372) guarantee the required versatile addressing of the pixels.
摘要翻译：本发明涉及诸如具有像素阵列的X射线检测器的电子设备（303），其可以组合（分类）到m×n个像素的合并块中。根据本发明，在每个读出步骤中，设备的可用读出行（325）都连接到不同的合并块，使得当使用mxn合并时，在垂直方向上同时寻址多达m个合并块。在这种情况下，来自m个垂直排列的块的输出信号分布在m×n块之前存在的m个读出列中。在优选实施例中，行地址线（361）与对角线地址线（371）和简单激活逻辑（372）一起保证了像素的所需通用寻址。

6. 发明申请

WO2011110985A3 MULTIFRAME X-RAY DETECTOR FOR IMAGING SYSTEM WITH DISTRIBUTED X-RAY SOURCES 审中-公开
公开(公告)号：WO2011110985A3
公开(公告)日：2011-09-15
申请号：PCT/IB2011/050924
申请日：2011-03-04
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , PIETIG, Rainer , RUETTEN, Walter , HERRMANN, Christoph
发明人： PIETIG, Rainer , RUETTEN, Walter , HERRMANN, Christoph
IPC分类号： H04N5/32 , G01T1/24 , G01T1/17
摘要： Device and method for synchronously switching activating a first and second charge accumulation section (31, 32) for a duration of a first and second predetermined sub -frame and a first and second X-ray source until lapse of a predetermined time frame for each of the first and second charge accumulation section (31, 32) for the accumulation of a plurality of temporally distributed partial charges according to an origin of a respective one of the plurality of spatially distributed X-ray sources so as to establish a specific relation between the focal spot position and a rule for accumulating the respective partial measurements, e.g. temporally distributed partial charges, belonging to the same focal spot positions, and to keep the focal spot temperature low by only activating the focal spot for a limited time according to a sub- frame.

7. 发明申请

WO2011055277A2 DETECTOR UNIT FOR DETECTING ELECTROMAGNETIC RADIATION 审中-公开
标题翻译：用于检测电磁辐射的探测器单元
公开(公告)号：WO2011055277A2
公开(公告)日：2011-05-12
申请号：PCT/IB2010/054863
申请日：2010-10-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , SIMON, Matthias , RUETTEN, Walter
发明人： SIMON, Matthias , RUETTEN, Walter
IPC分类号： G01T1/24
CPC分类号： G01T1/247 , H04N5/32 , H04N5/35545 , H04N5/3559 , H04N5/3745
摘要： According to an exemplary embodiment of the invention a detector unit 301 for detecting electro -magnetic radiation may be provided. The detector unit 301 may comprise a conversion material 332 adapted for converting impinging electro -magnetic radiation into electric charge carriers. Moreover, the detector unit 301 may comprise a charge collection electrode 331 adapted for collecting the converted electric charge carriers and an evaluation circuit 312, 313, 314 adapted for evaluating the electro -magnetic radiation based on the collected electric charge carriers. Moreover, the detector unit 301 may comprise a semiconductor 373 which may be electrically coupled between the charge collection electrode 331 and the evaluation circuit 312, 313, 314.
摘要翻译：根据本发明的示例性实施例，可以提供用于检测电磁辐射的检测器单元301。检测器单元301可以包括适于将入射的电磁辐射转换成电荷载体的转换材料332。此外，检测器单元301可以包括适于收集转换的电荷载流子的电荷收集电极331和适于基于收集的电荷载流子来评估电磁辐射的评估电路312,313,314。此外，检测器单元301可以包括可以电耦合在电荷收集电极331和评估电路312,313,314之间的半导体373。

8. 发明申请

WO2010150141A2 PROCESSING CIRCUIT FOR AN X-RAY SENSOR 审中-公开
标题翻译： X射线传感器的处理电路
公开(公告)号：WO2010150141A2
公开(公告)日：2010-12-29
申请号：PCT/IB2010/052701
申请日：2010-06-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , VAN DER WAL, Roelf , ALVING, Lex , RUETTEN, Walter
发明人： VAN DER WAL, Roelf , ALVING, Lex , RUETTEN, Walter
IPC分类号： G01T1/17
CPC分类号： H04N5/378 , H04N5/32 , H04N5/365
摘要： A processing circuit for an X-ray sensor for collecting at least a first pixel information of a first pixel and a second pixel information of a second pixel is provided. The processing circuit comprises an amplifier (112), a feedback loop (113) and a first collecting device (111). It is provided a compensation for a non-linearity in the pixels or in the pixel circuits (100, 200) by applying an inverse non-linearity (125) in the periphery of the X-ray sensor. A processing circuit (110) may provide a copy of a pixel voltage and/or of a pixel charge. In the case of pixel charge a non- linear characteristic of a pixel capacitance may be compensated.
摘要翻译：提供了一种用于收集至少第一像素的第一像素信息和第二像素的第二像素信息的用于X射线传感器的处理电路。处理电路包括放大器（112），反馈回路（113）和第一收集装置（111）。通过在X射线传感器的周围施加逆非线性（125），对像素或像素电路（100,200）中的非线性进行补偿。处理电路（110）可以提供像素电压和/或像素电荷的副本。在像素电荷的情况下，可以补偿像素电容的非线性特性。

9. 发明申请

WO2010119358A2 SPECTRAL IMAGING 审中-公开
标题翻译：光谱成像
公开(公告)号：WO2010119358A2
公开(公告)日：2010-10-21
申请号：PCT/IB2010/051101
申请日：2010-03-15
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BAEUMER, Christian , HERRMANN, Christoph , STEADMAN, Roger , RUETTEN, Walter
发明人： BAEUMER, Christian , HERRMANN, Christoph , STEADMAN, Roger , RUETTEN, Walter
CPC分类号： G01T1/1647 , G01T1/2985
摘要： An imaging system includes a scintillator array (202) and a digital photomultiplier array (204). A photon counting channel (212), an integrating channel (210), and a moment generating channel (214) process the output signal of the digital photomultiplier array (204). A reconstructor (122) spectrally resolves the first, the second and the third output signals. In one embodiment, a controller (232) activates the photon counting channel (212) to process the digital signal only if a radiation flux is below a predetermined threshold. An imaging system includes at least one direct conversion layer (302) and at least two scintillator layers (304) and corresponding photosensors (306). A photon counting channel (212) processes an output of the at least one direct conversion layer (302), and an integrating channel (210) and a moment generating channel (214) process respective outputs of the photosensors (306). A reconstructor (122) spectrally resolves the first, the second and the third output signals.
摘要翻译：成像系统包括闪烁体阵列（202）和数字光电倍增管阵列（204）。光子计数通道（212），积分通道（210）和力矩产生通道（214）处理数字光电倍增管阵列（204）的输出信号。重建器（122）对第一，第二和第三输出信号进行光谱解析。在一个实施例中，仅当辐射通量低于预定阈值时，控制器（232）激活光子计数通道（212）才能处理数字信号。成像系统包括至少一个直接转换层（302）和至少两个闪烁体层（304）和对应的光电传感器（306）。光子计数通道（212）处理至少一个直接转换层（302）的输出，并且积分通道（210）和力矩产生通道（214）处理光电传感器（306）的相应输出。重建器（122）对第一，第二和第三输出信号进行光谱解析。

10. 发明申请

WO2010058369A2 X-RAY DETECTOR 审中-公开
标题翻译： X射线探测器
公开(公告)号：WO2010058369A2
公开(公告)日：2010-05-27
申请号：PCT/IB2009/055211
申请日：2009-11-20
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , RUETTEN, Walter , KIEWITT, Rainer , WISCHHUSEN, Olaf
发明人： RUETTEN, Walter , KIEWITT, Rainer , WISCHHUSEN, Olaf
IPC分类号： G01T1/24
CPC分类号： G01T1/24
摘要： The application describes an X-ray detector for use in a medical equipment, wherein the detector comprises an unit for transforming X-ray radiation into electrical charge, a first capacitor for being charged by an electrical charge, wherein the first capacitor is electrically connected to the unit for transforming, a second capacitor for being charged by an electrical charge, and a first gain switching gate, wherein the second capacitor is electrically connected with the unit for transforming if the first gain switching gate is in on-state, wherein the detector is adapted to switch on the first gain switching gate for short periods. Further the application describes an X-ray system comprising a detector according to the invention, wherein the system is adapted for gain selection, wherein the detector is adapted to switch on the first gain switching gate for short periods. Further, the application describes a method for using a detector according to the inventive concept, wherein the first gain switching gate is switched on only for short periods of time for redistribution of electrical charge between the first capacitor and the second capacitor.
摘要翻译：本申请描述了用于医疗设备的X射线检测器，其中检测器包括用于将X射线辐射转换成电荷的单元，用于通过电荷充电的第一电容器，其中第一电容器电连接到用于变换的单元，通过电荷充电的第二电容器和第一增益切换栅极，其中如果所述第一增益切换栅极处于导通状态，则所述第二电容器与所述用于变换的单元电连接，其中所述检测器适于在短时间内接通第一增益切换门。此外，本申请描述了一种包括根据本发明的检测器的X射线系统，其中该系统适于增益选择，其中检测器适于在短时间内接通第一增益切换门。此外，本申请描述了一种使用根据本发明概念的检测器的方法，其中第一增益切换栅极仅在短时间段内被接通以在第一电容器和第二电容器之间重新分配电荷。

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