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1. 发明申请

WO2007010448A2 X-RAY DETECTOR IMAGING WITH POLYCHROMATIC SPECTRA 审中-公开
标题翻译：具有多色光谱的X射线探测器成像
公开(公告)号：WO2007010448A2
公开(公告)日：2007-01-25
申请号：PCT/IB2006/052362
申请日：2006-07-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , U.S. PHILIPS CORPORATION , HERRMANN, Christoph , ZEITLER, Guenter , BAEUMER, Christian , ENGEL, Klaus Jurgen
发明人： HERRMANN, Christoph , ZEITLER, Guenter , BAEUMER, Christian , ENGEL, Klaus Jurgen
CPC分类号： G01N23/046 , A61B6/4092 , A61B6/4233 , A61B6/503 , A61B6/504 , G01N2223/419 , G01N2223/612 , G01T1/17
摘要： An x-ray detector has a sensor (24) absorbing x-ray quanta of polychromatic spectra and generating an electric sensor signal corresponding to the absorbed x-ray quanta. There is at least one counting channel (430) including a plurality of discriminators (420) each counting a number of charge signals (450) detected at a different respective threshold since a beginning of a measurement interval and an integrating channel (440) which measures overall charge of the charge signals detected since the beginning of the measurement interval.
摘要翻译： x射线检测器具有吸收多色谱的x射线量子的传感器（24），并产生对应于所吸收的x射线量子的电传感器信号。存在至少一个计数通道（430），其包括多个鉴别器（420），每个鉴别器（420）对从测量间隔开始时开始的不同相应阈值处检测到的多个充电信号（450）进行计数，以及测量间隔的积分通道（440）自测量间隔开始以来检测到的充电信号的总电荷。

2. 发明申请

WO2007057841A3 SYSTEMS AND METHODS USING X-RAY TUBE SPECTRA FOR COMPUTED TOMOGRAPHY APPLICATIONS 审中-公开
公开(公告)号：WO2007057841A3
公开(公告)日：2007-05-24
申请号：PCT/IB2006/054246
申请日：2006-11-14
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , U.S. PHILIPS CORPORATION , ZEITLER, Guenter , HERRMANN, Christoph , ENGEL, Klaus J. , BAEUMER, Christian , ROESSL, Ewald , PROSKA, Roland
发明人： ZEITLER, Guenter , HERRMANN, Christoph , ENGEL, Klaus J. , BAEUMER, Christian , ROESSL, Ewald , PROSKA, Roland
IPC分类号： A61B6/03
摘要： Computed tomography (CT) systems are provided that utilize x-ray tube spectra in connection with the generation and/or interpretation of CT data. The disclosed systems and methods use x-ray tube spectra associated with CT systems to enhance contrast and/or image quality, e.g., by making use of energy selective detection techniques. The x-ray spectra may be determined in a variety of ways, e.g., incorporation of a spectral x-ray tube model into the CT system, using the output of Monte-Carlo simulations, and/or processing measured experimental spectral tube data for the CT system. The x-ray tube spectra is generally generated by and/or stored in a computer system associated with the CT system and may be used in support of an energy selective detective method and/or generation of spectral CT images.

3. 发明申请

WO2008104911A2 APPARATUS, IMAGING DEVICE AND METHOD FOR COUNTING X-RAY PHOTONS 审中-公开
标题翻译：装置，成像装置和计算X射线光子的方法
公开(公告)号：WO2008104911A2
公开(公告)日：2008-09-04
申请号：PCT/IB2008/050648
申请日：2008-02-22
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BAEUMER, Christian , HERRMANN, Christoph , STEADMAN BOOKER, Roger , ZEITLER, Guenter
发明人： BAEUMER, Christian , HERRMANN, Christoph , STEADMAN BOOKER, Roger , ZEITLER, Guenter
IPC分类号： G01T1/17
CPC分类号： G01T1/17 , G01T1/2985
摘要： The invention relates to an apparatus (10) for counting X-rayphotons (12, 14), in particular photons in a computer tomograph. The events from a first photon-sensitive element (20) are recorded in a first integrator (24), and the events coming from a second photon-sensitive element (22) are counted in a second integrator (26). A first summing unit (28) is provided for summing the values from the first and second integrators (24, 26) and a result signalto obtain a sum, wherein the result signal is obtained from a feedback device (30) being provided with the sum. It is there possible to reduce a total information density generated by the impinging photons (12, 14), so that a data stream with a reduced information density (or reduced data rate) is present at an output (34). The invention also relates to a corresponding imaging device (16) based on the detection of X-rayphotons (12, 14), in particular for medical use and to a method for counting X-rayphotons (12, 14), in particular photons in a computer tomograph.
摘要翻译：本发明涉及用于计算X射线光子（12,14）的设备（10），特别是计算机断层摄影机中的光子。来自第一光敏元件（20）的事件被记录在第一积分器（24）中，并且来自第二光敏元件（22）的事件在第二积分器（26）中被计数。第一求和单元（28）用于对来自第一和第二积分器（24,26）的值和结果信号进行求和以获得和，其中结果信号从反馈装置（30）获得，该反馈装置（30）被提供有总和。可以减少由入射光子（12,14）产生的总信息密度，使得在输出端（34）存在具有降低的信息密度（或降低的数据速率）的数据流。本发明还涉及基于X射线光子（12,14）的检测，特别是医疗用途的相应的成像装置（16），以及用于计数X射线光子（12,14）的方法，特别是用于计数X射线光子一台电脑断层扫描仪

4. 发明申请

WO2009115956A3 SINGLE PHOTON RADIATION DETECTOR 审中-公开
公开(公告)号：WO2009115956A3
公开(公告)日：2009-09-24
申请号：PCT/IB2009/051034
申请日：2009-03-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BAEUMER, Christian , FRACH, Thomas , HERRMANN, Christoph , PRESCHER, Gordian , SOLF, Torsten , STEADMAN BOOKER, Roger , ZEITLER, Guenter
发明人： BAEUMER, Christian , FRACH, Thomas , HERRMANN, Christoph , PRESCHER, Gordian , SOLF, Torsten , STEADMAN BOOKER, Roger , ZEITLER, Guenter
IPC分类号： G01T1/17 , G01T1/20
摘要： The invention relates to a radiation detector (100) that is particularly suited for energy resolved single X-rayphoton detection in a CT scanner. In a preferred embodiment, the detector (100) comprises an array of scintillator elements (S k ) in which incident X-ray photons (X) are converted into bursts of optical photons(hn). Pixels (P k ) associated to the scintillator elements (S k ) determine the numbers of optical photons they receive within predetermined acquisition intervals. These numbers can then be digitally processed to detect single X-rayphotons(X) and to determine their energy. The pixels may particularly be realized by avalanche photodiodes withassociated digitalelectronic circuits for data processing.

5. 发明申请

WO2008072181A2 APPARATUS, IMAGING DEVICE AND METHOD FOR COUNTING X-RAY PHOTONS 审中-公开
标题翻译：装置，成像装置和计算X射线光子的方法
公开(公告)号：WO2008072181A2
公开(公告)日：2008-06-19
申请号：PCT/IB2007/055021
申请日：2007-12-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , STEADMAN BOOKER, Roger , BAEUMER, Christian , HERRMANN, Christoph , ZEITLER, Guenter
发明人： STEADMAN BOOKER, Roger , BAEUMER, Christian , HERRMANN, Christoph , ZEITLER, Guenter
CPC分类号： G01T1/17 , G01T1/2928
摘要： The present invention relates to an apparatus (10) for counting X-ray photons (12, 14). The apparatus (10) comprises a sensor (16) adapted to convert a photon (12, 14) into a charge pulse, a processing element (18) adapted to convert the charge pulse (51) into an electrical pulse (53) and a first discriminator (20) adapted to compare the electrical pulse (53) against a first threshold (TH1) and to output an event (55) if the first threshold (TH1) is exceeded. A first counter (22) counts these events (55), unless counting is inhibited by a first gating element (24). The first gating element (24) is activated when the first discriminator (20) outputs the event (55), and it is deactivated, when the processing of a photon (12, 14) is found to be complete or about to be completed by a measurement or by the knowledge about the time that it takes to process a photon (12, 14) in the processing element (18). By activating and deactivating the first counter (22) pile-up events, i.e. pile-up of multiple electrical pulses (53), can be addressed. The invention also relates to a corresponding imaging device and a corresponding method.
摘要翻译：本发明涉及一种用于计数X射线光子（12,14）的装置（10）。所述设备（10）包括适于将光子（12,14）转换为充电脉冲的传感器（16），适于将所述充电脉冲（51）转换成电脉冲（53）的处理元件（18）适于比较电脉冲（53）与第一阈值（TH1）并且如果超过第一阈值（TH1）则输出事件（55）的第一鉴别器（20）。第一计数器（22）对这些事件（55）进行计数，除非由第一选通元件（24）抑制计数。当第一鉴别器（20）输出事件（55）时，第一选通元件（24）被激活，并且当发现光子（12,14）的处理完成或将要由测量或通过关于在处理元件（18）中处理光子（12,14）所需的时间的知识。通过激活和去激活第一计数器（22）堆积事件，即堆叠多个电脉冲（53），可以被解决。本发明还涉及相应的成像装置和相应的方法。

6. 发明申请

WO2008062360A2 APPARATUS AND METHOD FOR DETERMINING A DETECTOR ENERGY WEIGHTING FUNCTION OF A DETECTION UNIT 审中-公开
标题翻译：用于确定检测单元的检测器能量权重函数的装置和方法
公开(公告)号：WO2008062360A2
公开(公告)日：2008-05-29
申请号：PCT/IB2007/054692
申请日：2007-11-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , ENGEL, Klaus, J. , BAEUMER, Christian , ZEITLER, Guenter , HERRMANN, Christoph
发明人： ENGEL, Klaus, J. , BAEUMER, Christian , ZEITLER, Guenter , HERRMANN, Christoph
CPC分类号： G01T1/1647
摘要： The invention relates to an apparatus for determining a detector energy weighting function of a detection unit (6). The apparatus comprises a determination unit (21) for determining a spectral response function of the detection unit (6) and a calculation unit (22) for determining the detector energy weighting function by integrating the product of the spectral response function of the detection unit (6) and a given ideal detector energy weighting function.
摘要翻译：本发明涉及一种用于确定检测单元（6）的检测器能量加权函数的装置。该装置包括：确定单元（21），用于确定检测单元（6）的频谱响应函数;以及计算单元（22），用于通过对检测单元（6）的频谱响应函数的乘积进行积分来确定检测器能量加权函数 6）和给定的理想检测器能量加权函数。

7. 发明申请

WO2008059425A3 RADIATION DETECTOR WITH MULTIPLE ELECTRODES ON A SENSITIVE LAYER 审中-公开
公开(公告)号：WO2008059425A3
公开(公告)日：2008-05-22
申请号：PCT/IB2007/054577
申请日：2007-11-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , ENGEL, Klaus, J. , ZEITLER, Guenter , BAEUMER, Christian , HERRMANN, Christoph , WIEGERT, Jens , PROKSA, Roland , RÖSSL, Ewald , STEADMAN BOOKER, Roger
发明人： ENGEL, Klaus, J. , ZEITLER, Guenter , BAEUMER, Christian , HERRMANN, Christoph , WIEGERT, Jens , PROKSA, Roland , RÖSSL, Ewald , STEADMAN BOOKER, Roger
IPC分类号： G01T1/29
摘要： The invention relates to a radiation detector (200), particularly an X-ray detector, which comprises at least one sensitive layer (212) for the conversion of incident photons (X) into electrical signals. A two-dimensional array of electrodes (213) is located on the front side of the sensitive layer (212), while its back side carries a counter- electrode (211). The size of the electrodes (213) may vary in radiation direction (y) for adapting the counting workload of the electrodes. Moreover, the position of the electrodes (213) with respect to the radiation direction (y) provides information about the energy of the detected photons (X).

8. 发明申请

WO2008020379A2 RADIATION DETECTOR WITH COUNTING ELECTRONICS 审中-公开
标题翻译：有计数电子的辐射探测器
公开(公告)号：WO2008020379A2
公开(公告)日：2008-02-21
申请号：PCT/IB2007/053182
申请日：2007-08-10
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , HERRMANN, Christoph , STEADMAN, Roger , ZEITLER, Guenter , BAEUMER, Christian
发明人： HERRMANN, Christoph , STEADMAN, Roger , ZEITLER, Guenter , BAEUMER, Christian
IPC分类号： G01T1/17
CPC分类号： G01T1/17
摘要： The invention relates to a radiation detector, particularly an X-ray detector (100), comprising a counting circuitry (10, 20, 30) for counting electrical pulses generated by the (sub-)pixels (2) of the detector. In the counting circuitry, the results counted by a fast counting stage (10) are at intervals transferred to a slow counting stage (20). The fast counting stage (10) may for example comprise a fast counter (111) with a low bit-depth operating as a frequency divider in front of a slow counter (121) of high bit-depth in the slow counting stage (20). The counting circuitry (10, 20, 30) can optionally be fed via a multiplexer (4) with the signals of several (sub-)pixels (2). Furthermore, the pixels (1, 2) of the radiation device may optionally deliver energy resolved pulses.
摘要翻译：本发明涉及一种辐射探测器，特别是一种X射线探测器（100），其包括用于对由（子）像素（（子））产生的电脉冲进行计数的计数电路（10,20,30） 2）的检测器。在计数电路中，由快速计数级（10）计数的结果以间隔转移到慢速计数级（20）。快速计数级（10）例如可以包括具有低位深度的快速计数器（111），其在慢计数级（20）中作为高位深度的慢计数器（121）前面的分频器进行操作，。计数电路（10,20,30）可以可选地经由多路复用器（4）与几个（子）像素（2）的信号一起被馈送。此外，辐射装置的像素（1,2）可以可选地传递能量分解脉冲。

9. 发明申请

WO2009031126A2 RADIATION DETECTOR WITH SEVERAL CONVERSION LAYERS 审中-公开
标题翻译：具有几个转换层的辐射探测器
公开(公告)号：WO2009031126A2
公开(公告)日：2009-03-12
申请号：PCT/IB2008/053602
申请日：2008-09-05
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , HERRMANN, Christoph , BAEUMER, Christian , STEADMAN BOOKER, Roger , ZEITLER, Guenter
发明人： HERRMANN, Christoph , BAEUMER, Christian , STEADMAN BOOKER, Roger , ZEITLER, Guenter
CPC分类号： G01T1/249 , G01T1/20 , G01T1/242
摘要： The invention relates to a radiation detector (100), particularly for X-rays (X) and for γ-rays, which comprises a combination of (a) at least one primary conversion layer (101a-101f) with a low attenuation coefficient for the photons and (b) at least one secondary conversion layer (102) with a high attenuation coefficient for the photons. In preferred embodiments, the primary conversion layer (101a-101f) may be realized by a silicon layer coupled to associated energy-resolving counting electronics (111a-111f, 121). The secondary conversion layer (102) may be realized for example by CZT or GOS coupled to energy- resolving counting electronics or integrating electronics. Using primary conversion layers with low stopping power allows to build a stacked radiation detector (100) for spectral CT in which the counting rates of the layers are limited to feasible values without requiring unrealistic thin layers.
摘要翻译：本发明涉及一种特别用于X射线（X）和γ射线的辐射探测器（100），其包括（a）至少一个主要转换层（101a- 101f）对于光子具有低衰减系数，以及（b）对于光子具有高衰减系数的至少一个次级转换层（102）。在优选实施例中，主转换层（101a-101f）可以通过耦合到相关的能量分辨计数电子器件（111a-111f，121）的硅层来实现。次级转换层（102）可以例如通过耦合到能量分辨计数电子器件或集成电子器件的CZT或GOS来实现。使用具有低停止功率的主转换层允许构建用于光谱CT的堆叠辐射检测器（100），其中层的计数速率被限制为可行值而不需要不切实际的薄层。

10. 发明申请

WO2008155680A2 SPECTRAL PHOTON COUNTING DETECTOR 审中-公开
标题翻译：光谱计数检测器
公开(公告)号：WO2008155680A2
公开(公告)日：2008-12-24
申请号：PCT/IB2008/052043
申请日：2008-05-23
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , HERRMANN, Christoph , STEADMAN, Roger , BAEUMER, Christian , ZEITLER, Guenter
发明人： HERRMANN, Christoph , STEADMAN, Roger , BAEUMER, Christian , ZEITLER, Guenter
IPC分类号： G01T1/17 , G01T1/164
CPC分类号： G01T1/171
摘要： An apparatus includes an integrator (120) that produces a pulse having a peak amplitude indicative of the energy of a detected photon. First discharging circuitry (136) discharges the integrator (120) at a first discharging speed, and second discharging circuitry (124) discharges the integrator (120) at a second discharging speed. The first discharging speed is less than the second discharging speed.
摘要翻译：一种装置包括产生具有指示被检测光子的能量的峰值振幅的脉冲的积分器（120）。第一放电电路（136）以第一放电速度放电积分器（120），第二放电电路（124）以第二放电速度放电积分器（120）。第一放电速度小于第二放电速度。

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