公开(公告)号：WO2009133481A3

公开(公告)日：2010-06-10

申请号：PCT/IB2009051192

申请日：2009-03-20

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  MARKS AVIV ,  HERRMANN CHRISTOPH ,  ROESSL EWALD

Inventor： MARKS AVIV ,  HERRMANN CHRISTOPH ,  ROESSL EWALD

IPC: G01T1/17

CPC classification number: G01T1/17

Abstract: A pulse shaper (124) includes an integrator (202) with a feedback capacitor (208) that stores integrated charge of a charge pulse indicative of a detected photon. An output pulse of the integrator includes a peak amplitude indicative of the detected photon. An end pulse identifier (214) identifies the end of the charge pulse. A controller (216) generates a control signal that invokes a reset of the integrator (202) when the end of the 5 pulse is identified. An energy discriminator (128) includes a chain of comparators (132) connected in series. An output of each of the comparators (702, 704) is influenced by an output of a previous one of the comparators (702, 704). A decision component (706) determines an output of the comparators (702, 704), and a controller component (708) triggers the decision component (706) to store the output of the comparators (702, 704) 10 after lapse of a charge collection time.

Abstract translation: 脉冲整形器（124）包括具有反馈电容器（208）的积分器（202），该反馈电容器存储指示检测到的光子的电荷脉冲的积分电荷。 积分器的输出脉冲包括指示检测到的光子的峰值振幅。 结束脉冲识别器（214）识别充电脉冲的结束。 当识别出5脉冲的结束时，控制器（216）产生调用积分器（202）的复位的控制信号。 能量鉴别器（128）包括串联连接的比较器链（132）。 每个比较器（702,704）的输出受到前一个比较器（702,704）的输出的影响。 判定部件（706）确定比较器（702,704）的输出，并且控制器部件（708）触发判定部件（706），以在经过充电之后存储比较器（702,704）10的输出 收集时间。

公开(公告)号：WO2009115956A2

公开(公告)日：2009-09-24

申请号：PCT/IB2009051034

申请日：2009-03-12

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  BAEUMER CHRISTIAN ,  FRACH THOMAS ,  HERRMANN CHRISTOPH ,  PRESCHER GORDIAN ,  SOLF TORSTEN ,  STEADMAN BOOKER ROGER ,  ZEITLER GUENTER

Inventor： BAEUMER CHRISTIAN ,  FRACH THOMAS ,  HERRMANN CHRISTOPH ,  PRESCHER GORDIAN ,  SOLF TORSTEN ,  STEADMAN BOOKER ROGER ,  ZEITLER GUENTER

IPC: G01T1/20

CPC classification number: G01T1/2018 ,  G01T1/17

Abstract: 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.

Abstract translation: 本发明涉及一种特别适用于CT扫描仪中能量消除单次X射线光电检测的辐射检测器（100）。 在优选实施例中，检测器（100）包括闪烁体元件（S k）的阵列，其中入射的X射线光子（X）被转换成光子光子（hn）的脉冲串。 与闪烁体元件（S k）相关联的像素（P k）确定它们在预定采集间隔内接收的光子数。 然后可以对这些数字进行数字处理以检测单个X射线光子（X）并确定其能量。 像素可以特别地由具有相关数字电子电路的雪崩光电二极管实现，用于数据处理。

公开(公告)号：WO2008155680A3

公开(公告)日：2009-09-24

申请号：PCT/IB2008052043

申请日：2008-05-23

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  HERRMANN CHRISTOPH ,  STEADMAN ROGER ,  BAEUMER CHRISTIAN ,  ZEITLER GUENTER

Inventor： HERRMANN CHRISTOPH ,  STEADMAN ROGER ,  BAEUMER CHRISTIAN ,  ZEITLER GUENTER

IPC: G01T1/17

CPC classification number: G01T1/171

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2009019622A3

公开(公告)日：2009-08-20

申请号：PCT/IB2008052967

申请日：2008-07-24

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  STEADMAN BOOKER ROGER ,  BAEUMER CHRISTIAN ,  HERRMANN CHRISTOPH ,  ZEITLER GUENTER ,  KRUEGER HANS ,  RUETTEN WALTER ,  MUELHENS OLIVER

Inventor： STEADMAN BOOKER ROGER ,  BAEUMER CHRISTIAN ,  HERRMANN CHRISTOPH ,  ZEITLER GUENTER ,  KRUEGER HANS ,  RUETTEN WALTER ,  MUELHENS OLIVER

IPC: G01T1/17

CPC classification number: G01T1/17

Abstract: The present invention relates to an apparatus (10) for generating countable pulses (30) from impinging X-ray photons (12, 14) in an imaging device (16), in particular in a computer tomograph, the apparatus (10) comprising a pre-amplifying element (18) adapted to convert a charge pulse (20) generated by an impinging photon (12, 14) into an electrical signal (22) and a shaping element (26) having a feedback loop (28) and adapted to convert the electrical signal (22) into an electrical pulse (30), wherein a delay circuit (38) is connected to the feedback loop (28) such that a time during which the feedback loop (28) collects charges of the electrical signal (22) is extended in order to improve an amplitude of the electrical pulse (30) at an output (56) of the shaping element (26). The invention also relates to a corresponding imaging device (16) and a corresponding method.

Abstract translation: 本发明涉及一种用于产生来自成像装置（16）中的入射X射线光子（12,14）的可计数脉冲（30）的装置（10），特别是在计算机断层摄影机中，该装置（10）包括一个 适于将由入射光子（12,14）产生的电荷脉冲（20）转换成电信号（22）的预放大元件（18）和具有反馈回路（28）的成形元件（26），并且适于 将电信号（22）转换成电脉冲（30），其中延迟电路（38）连接到反馈回路（28），使得反馈回路（28）收集电信号的电荷 22）被扩展以便改善成形元件（26）的输出端（56）处的电脉冲（30）的振幅。 本发明还涉及相应的成像装置（16）和相应的方法。

公开(公告)号：WO2008146218A3

公开(公告)日：2009-06-25

申请号：PCT/IB2008052029

申请日：2008-05-22

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  HERRMANN CHRISTOPH ,  STEADMAN ROGER ,  BAEUMER CHRISTIAN ,  ZEITLER GUENTER

Inventor： HERRMANN CHRISTOPH ,  STEADMAN ROGER ,  BAEUMER CHRISTIAN ,  ZEITLER GUENTER

IPC: G01T1/17

CPC classification number: G01T1/171

Abstract: An apparatus includes a scale factor determiner (236) that determines a count scale factor based on a measured count of a number detected photons for an energy threshold and an estimated actual count of the number of detected photons. The photons include poly-energetic photons detected by a radiation sensitive detector. The apparatus further includes a count sealer (136) that employs the count scale factor to scale measured counts of detected photons for different energy thresholds.

Abstract translation: 一种装置包括比例因子确定器（236），该比例因子确定器（236）基于针对能量阈值的检测到的光子数量的测量计数和检测到的光子数量的估计实际计数来确定计数比例因子。 光子包括由辐射敏感检测器检测的多能光子。 该装置还包括计数密封器（136），其使用计数比例因子来缩放检测到的光子对于不同能量阈值的计数。

公开(公告)号：WO2008012723A3

公开(公告)日：2008-03-27

申请号：PCT/IB2007052783

申请日：2007-07-12

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINK PHILIPS ELECRONICS N V ,  RUETTEN WALTER ,  SIMON MATTHIAS ,  KIEWITT RAINER ,  HERRMANN CHRISTOPH ,  MENSER BERND

Inventor： RUETTEN WALTER ,  SIMON MATTHIAS ,  KIEWITT RAINER ,  HERRMANN CHRISTOPH ,  MENSER BERND

IPC: G01T1/24 ,  H01L27/146

CPC classification number: H01L27/14658 ,  H01L27/14676

Abstract: A detector unit (301) for detecting electromagnetic radiation (106), the detector unit (301) comprising a conversion material (332) adapted for converting impinging electromagnetic radiation (106) into electric charge carriers, a charge collection electrode (331) adapted for collecting the converted electric charge carriers, a shielding electrode (334, 335) adapted to form a capacitance with the charge collection electrode (331), and an evaluation circuit (312 to 315) electrically coupled with the charge collection electrode (331) and adapted for evaluating the electromagnetic radiation (106) based on the collected electric charge carriers.

Abstract translation: 一种用于检测电磁辐射（106）的检测器单元（301），所述检测器单元（301）包括适于将入射电磁辐射（106）转换成电荷载流子的转换材料（332），适于 收集转换的电荷载体，适于与电荷收集电极（331）形成电容的屏蔽电极（334,335），以及与电荷收集电极（331）电耦合的评估电路（312至315），并且适于 用于基于收集的电荷载流子来评估电磁辐射（106）。