公开(公告)号：WO2010061307A3

公开(公告)日：2010-06-03

申请号：PCT/IB2009/054884

申请日：2009-11-03

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  ROESSL, Ewald

Inventor： ROESSL, Ewald

IPC: G01T1/29

Abstract: A spectral processor (118) includes a first processing channel (120) that generates a first spectral signal derived from a detector signal, wherein the first spectral signal includes first spectral information about the detector signal, and a second processing channel (120) that generates a second spectral signal derived from the detector signal, wherein the second spectral signal includes second spectral information about the detector signal, wherein the first and second spectral signals are used to spectrally resolve the detector signal, and wherein the detector signal is indicative of detected polychromatic radiation.

公开(公告)号：WO2010001281A1

公开(公告)日：2010-01-07

申请号：PCT/IB2009/052300

申请日：2009-06-01

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  FORTHMANN, Peter ,  VAN STEVENDAAL, Udo ,  ROESSL, Ewald ,  GRASS, Michael ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter

Inventor： FORTHMANN, Peter ,  VAN STEVENDAAL, Udo ,  ROESSL, Ewald ,  GRASS, Michael ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter

IPC: A61B6/03 ,  G01T1/20 ,  H05G1/60

CPC classification number: A61B6/405 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4241 ,  A61B6/482

Abstract: An imaging system includes a radiation source (106, T1, T2, T3) that rotates about an examination region and emits radiation that traverses the examination region. The radiation source (106, T1, T2, T3) emits radiation having an energy spectrum that is selectively alternately switched between at least two different energy spectra during an imaging procedure. The system further includes an energy-resolving detector array (116, D1, D2, D3) that detects radiation traversing the examination region. The energy-resolving detector array (116, D1, D2, D3) resolves the detected radiation over at least two different energy ranges and produces energy-resolved output signals as a function of both emission energy spectrum and energy range. The system further includes a reconstructor (126) that performs a spectral reconstruction of the energy-resolved output signals. In another embodiment, the detector array (116) includes a photon-counting detector array (116).

Abstract translation: 成像系统包括围绕检查区域旋转并且发射穿过检查区域的辐射的辐射源（106，T1，T2，T3）。 辐射源（106，T1，T2，T3）发射具有在成像过程期间在至少两个不同能量谱之间选择性交替切换的能谱的辐射。 该系统还包括检测穿过检查区域的辐射的能量分辨检测器阵列（116，D1，D2，D3）。 能量分辨检测器阵列（116，D1，D2，D3）通过至少两个不同的能量范围来解析检测到的辐射，并且产生作为发射能量谱和能量范围的函数的能量分辨的输出信号。 该系统还包括执行能量分辨输出信号的频谱重建的重建器（126）。 在另一个实施例中，检测器阵列（116）包括光子计数检测器阵列（116）。

公开(公告)号：WO2009133481A2

公开(公告)日：2009-11-05

申请号：PCT/IB2009/051192

申请日：2009-03-20

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  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：WO2009083920A1

公开(公告)日：2009-07-09

申请号：PCT/IB2008/055539

申请日：2008-12-26

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  ROESSL, Ewald ,  PROKSA, Roland

Inventor： ROESSL, Ewald ,  PROKSA, Roland

IPC: H01L27/146

CPC classification number: H01L27/1463 ,  H01L27/14659

Abstract: To mitigate the influence of charge sharing occurring in semiconductor detectors, an improved semiconductor detector (200) is provided, which comprises: a plurality of anodes (210) arranged to form at least one opening (230), each opening being formed by two anodes in the plurality of anodes; at least one cathode (220); a detector cell (240) located between the plurality of anodes and the at least one cathode; wherein the detector cell comprises at least one groove (250), each of the at least one groove having a first opening (252) aligned with one of the at least one opening being formed by two anodes in the plurality of anodes, each of the at least one groove extending towards the at least one cathode. By forming grooves in the detector cell, the charge cloud generated by a single photon can be received by a corresponding anode instead of several neighboring anodes, which thereby improves the spectral resolution and count rate of a semiconductor detector.

Abstract translation: 为了减轻在半导体检测器中发生的电荷共享的影响，提供了一种改进的半导体检测器（200），其包括：多个阳极（210），被布置成形成至少一个开口（230），每个开口由两个阳极形成 在多个阳极中; 至少一个阴极（220）; 位于所述多个阳极和所述至少一个阴极之间的检测器单元（240）; 其中所述检测器单元包括至少一个凹槽（250），所述至少一个凹槽中的每个凹槽具有与所述多个阳极中的两个阳极形成的所述至少一个开口中的一个开口对准的第一开口（252） 至少一个凹槽，朝向所述至少一个阴极延伸。 通过在检测器单元中形成凹槽，由单个光子产生的电荷云可由相应的阳极代替几个相邻的阳极来接收，从而提高半导体检测器的光谱分辨率和计数率。

公开(公告)号：WO2008155679A3

公开(公告)日：2009-07-09

申请号：PCT/IB2008052042

申请日：2008-05-23

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  PROKSA ROLAND ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD ,  LIRAN TUVIA ,  MARKS AVIV

Inventor： PROKSA ROLAND ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD ,  LIRAN TUVIA ,  MARKS AVIV

IPC: G01T1/17

CPC classification number: G01T1/171

Abstract: An apparatus includes a local minimum identifier (408) that identifies a local minimum between overlapping pulses in a signal, wherein the pulses have amplitudes that are indicative of the energy of successively detected photons from a multi-energetic radiation beam by a radiation sensitive detector, and a pulse pile-up error corrector (232) that corrects, based on the local minimum, for a pulse pile-up energy-discrimination error when energy-discriminating the pulses using at least two thresholds corresponding to different energy levels. This technique may reduce spectral error when counting photons at a high count rate.

Abstract translation: 一种装置包括识别信号中重叠脉冲之间的局部最小值的局部最小标识符（408），其中脉冲具有指示由辐射敏感检测器从多能辐射束连续检测到的光子的能量的幅度， 以及脉冲堆积误差校正器（232），其基于局部最小值来校正针对对应于不同能级的至少两个阈值对脉冲进行能量鉴别的脉冲堆积能量鉴别误差。 当以高计数率计数光子时，该技术可能降低光谱误差。

公开(公告)号：WO2008155679A2

公开(公告)日：2008-12-24

申请号：PCT/IB2008/052042

申请日：2008-05-23

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter ,  ROESSL, Ewald ,  LIRAN, Tuvia ,  MARKS, Aviv

Inventor： PROKSA, Roland ,  SCHLOMKA, Jens-Peter ,  ROESSL, Ewald ,  LIRAN, Tuvia ,  MARKS, Aviv

IPC: G01T1/17

CPC classification number: G01T1/171

Abstract: An apparatus includes a local minimum identifier (408) that identifies a local minimum between overlapping pulses in a signal, wherein the pulses have amplitudes that are indicative of the energy of successively detected photons from a multi-energetic radiation beam by a radiation sensitive detector, and a pulse pile-up error corrector (232) that corrects, based on the local minimum, for a pulse pile-up energy-discrimination error when energy-discriminating the pulses using at least two thresholds corresponding to different energy levels. This technique may reduce spectral error when counting photons at a high count rate.

Abstract translation: 一种装置包括识别信号中重叠脉冲之间的局部最小值的局部最小标识符（408），其中脉冲具有指示由辐射敏感检测器从多能辐射束连续检测到的光子的能量的幅度， 以及脉冲堆积误差校正器（232），其基于局部最小值来校正针对对应于不同能级的至少两个阈值对脉冲进行能量鉴别的脉冲堆积能量鉴别误差。 当以高计数率计数光子时，该技术可能降低光谱误差。

公开(公告)号：WO2008021664A1

公开(公告)日：2008-02-21

申请号：PCT/US2007/074103

申请日：2007-07-23

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  U. S. PHILIPS CORPORATION ,  ROESSL, Ewald ,  VAN STEVENDAAL, Udo

Inventor： ROESSL, Ewald ,  VAN STEVENDAAL, Udo

IPC: G06T11/00

CPC classification number: G06T11/005 ,  A61B6/027 ,  G06T2211/412

Abstract: An imaging system includes an energy resolving detector (20) which generates data indicative of detected radiation having at least first and second energies. The system also includes an energy pre-processor (24), a motion calculator (26), and a reconstructor (22). In one embodiment, the apparatus uses a k-edge imaging technique to perform a motion compensated reconstruction of projection data indicative of an object under examination.

Abstract translation: 成像系统包括能量分辨检测器（20），其产生指示具有至少第一和第二能量的检测到的辐射的数据。 该系统还包括能量预处理器（24），运动计算器（26）和重构器（22）。 在一个实施例中，该装置使用k边缘成像技术来执行指示被检查对象的投影数据的运动补偿重建。