SPECTRAL IMAGING
    1.
    发明申请
    SPECTRAL IMAGING 有权
    光谱成像

    公开(公告)号:US20120032085A1

    公开(公告)日:2012-02-09

    申请号:US13263851

    申请日:2010-03-15

    IPC分类号: G01T1/20

    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。

    Spectral imaging
    2.
    发明授权
    Spectral imaging 有权
    光谱成像

    公开(公告)号:US08378307B2

    公开(公告)日:2013-02-19

    申请号:US13263851

    申请日:2010-03-15

    IPC分类号: G01T1/10

    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。

    Spectral photon counting detector
    3.
    发明授权
    Spectral photon counting detector 有权
    光谱光子计数检测器

    公开(公告)号:US09335424B2

    公开(公告)日:2016-05-10

    申请号:US12665572

    申请日:2008-05-23

    IPC分类号: G01T1/17

    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。

    Apparatus, imaging device and method for detecting X-ray radiation
    4.
    发明授权
    Apparatus, imaging device and method for detecting X-ray radiation 有权
    用于检测X射线辐射的装置,成像装置和方法

    公开(公告)号:US08618471B2

    公开(公告)日:2013-12-31

    申请号:US12446758

    申请日:2007-10-22

    IPC分类号: G12B13/00 G01J1/42

    CPC分类号: G01T1/17

    摘要: The invention is directed at an apparatus (10), an imaging device and a method for detecting X-ray photons, in particular photons (32,34) in a computer tomograph. Photons (32,34) are converted into an electrical pulse and compared against a threshold using a discriminator (20). The electrical network (12) performing these functions comprises a switching element (28), that can modify the electrical path (22) along which the process signals travel. The trigger signal (VT) for actuating the switching element (28) is derived from an electrical state of the electrical path (22). If a pulse associated to a photon (32,34) is detected, the switching element (28) is actuated in order to avoid that the processing of the charge pulse stemming from a first photon (32) is affected by a subsequent second photon (34).

    摘要翻译: 本发明涉及一种用于检测计算机断层摄影机中的X射线光子,特别是光子(32,34)的成像装置和方法的装置(10)。 光子(32,34)被转换成电脉冲,并使用鉴别器(20)与阈值进行比较。 执行这些功能的电网(12)包括开关元件(28),其可以修改过程信号沿其移动的电路径(22)。 用于致动开关元件(28)的触发信号(VT)源于电路径(22)的电状态。 如果检测到与光子(32,34)相关联的脉冲,则开关元件(28)被致动以避免由第一光子(32)产生的电荷脉冲的处理受随后的第二光子( 34)。

    SPECTRAL PHOTON COUNTING DETECTOR
    5.
    发明申请
    SPECTRAL PHOTON COUNTING DETECTOR 审中-公开
    光谱计数检测器

    公开(公告)号:US20100193700A1

    公开(公告)日:2010-08-05

    申请号:US12602252

    申请日:2008-05-22

    IPC分类号: G01T1/17

    CPC分类号: G01T1/171

    摘要: 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.

    摘要翻译: 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。

    RADIATION DETECTOR WITH COUNTING ELECTRONICS
    6.
    发明申请
    RADIATION DETECTOR WITH COUNTING ELECTRONICS 审中-公开
    具有计数电子的辐射探测器

    公开(公告)号:US20100172466A1

    公开(公告)日:2010-07-08

    申请号:US12376854

    申请日:2007-08-10

    IPC分类号: H05G1/60 G01T1/17 G01T1/18

    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检测器,特别是一种X射线检测器(100),包括用于对由检测器的(子)像素(2)产生的电脉冲进行计数的计数电路(10,20,30)。 在计数电路中,通过快速计数级(10)计数的结果以间隔传送到慢计数级(20)。 快速计数级(10)可以例如包括具有低位深度的快速计数器(111),其在缓慢计数级(20)中在高位深度的慢计数器(121)前面作为分频器工作, 。 计数电路(10,20,30)可以可选地通过多路复用器(4)与多个(子)像素(2)的信号馈送。 此外,辐射装置的像素(1,2)可以可选地递送能量分辨脉冲。

    SPECTRAL PHOTON COUNTING DETECTOR
    7.
    发明申请
    SPECTRAL PHOTON COUNTING DETECTOR 有权
    光谱计数检测器

    公开(公告)号:US20100187432A1

    公开(公告)日:2010-07-29

    申请号:US12665572

    申请日:2008-05-23

    IPC分类号: G01T1/17 G01T1/161

    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。

    APPARATUS, IMAGING DEVICE AND METHOD FOR DETECTING X-RAY RADIATION
    8.
    发明申请
    APPARATUS, IMAGING DEVICE AND METHOD FOR DETECTING X-RAY RADIATION 有权
    装置,成像装置和用于检测X射线辐射的方法

    公开(公告)号:US20100086100A1

    公开(公告)日:2010-04-08

    申请号:US12446758

    申请日:2007-10-22

    IPC分类号: G01T1/17 G21K1/12

    CPC分类号: G01T1/17

    摘要: The invention is directed at an apparatus (10), an imaging device and a method for detecting X-ray photons, in particular photons (32, 34) in a computer tomograph. Photons (32, 34) are converted into an electrical pulse and compared against a threshold using a discriminator (20). The electrical network (12) performing these functions comprises a switching element (28), that can modify the electrical path (22) along which the process signals travel. The trigger signal (VT) for actuating the switching element (28) is derived from an electrical state of the electrical path (22). If a pulse associated to a photon (32, 34) is detected, the switching element (28) is actuated in order to avoid that the processing of the charge pulse stemming from a first photon (32) is affected by a subsequent second photon (34).

    摘要翻译: 本发明涉及一种用于在计算机断层摄影机中检测X射线光子,特别是光子(32,34)的装置(10),成像装置和方法。 光子(32,34)被转换成电脉冲,并使用鉴别器(20)与阈值进行比较。 执行这些功能的电网(12)包括开关元件(28),其可以修改过程信号沿其移动的电路径(22)。 用于致动开关元件(28)的触发信号(VT)源于电路径(22)的电状态。 如果检测到与光子(32,34)相关联的脉冲,则开关元件(28)被致动,以避免由第一光子(32)产生的电荷脉冲的处理受随后的第二光子( 34)。

    Radiation detector assembly with test circuitry
    9.
    发明授权
    Radiation detector assembly with test circuitry 有权
    具有测试电路的辐射探测器组件

    公开(公告)号:US09063240B2

    公开(公告)日:2015-06-23

    申请号:US13511679

    申请日:2010-12-07

    摘要: A radiation detector assembly (20) includes a detector array module (40) configured to convert radiation particles to electrical detection pulses, and an application specific integrated circuit (ASIC) (42) operatively connected with the detector array. The ASIC includes signal processing circuitry (60) configured to digitize an electrical detection pulse received from the detector array, and test circuitry (80) configured to inject a test electrical pulse into the signal processing circuitry. The test circuitry includes a current meter (84) configured to measure the test electrical pulse injected into the signal processing circuitry, and a charge pulse generator (82) configured to generate a test electrical pulse that is injected into the signal processing circuitry. The radiation detector assembly (20) is assembled by operatively connecting the ASIC (42) with the detector array module (40), and the signal processing circuitry (60) of the ASIC of the assembled radiation detector assembly is tested without the use of radiation.

    摘要翻译: 辐射检测器组件(20)包括被配置为将辐射粒子转换成电检测脉冲的检测器阵列模块(40)以及与检测器阵列可操作地连接的专用集成电路(ASIC)(42)。 ASIC包括被配置为数字化从检测器阵列接收的电检测脉冲的信号处理电路(60),以及配置成将测试电脉冲注入到信号处理电路中的测试电路(80)。 测试电路包括配置成测量注入到信号处理电路中的测试电脉冲的电流计(84)和被配置为产生被注入到信号处理电路中的测试电脉冲的充电脉冲发生器(82)。 通过将ASIC(42)与检测器阵列模块(40)可操作地连接来组装放射线检测器组件(20),并且组装的辐射探测器组件的ASIC的信号处理电路(60)被测试而不使用辐射 。

    RADIATION DETECTOR ASSEMBLY WITH TEST CIRCUITRY
    10.
    发明申请
    RADIATION DETECTOR ASSEMBLY WITH TEST CIRCUITRY 有权
    辐射检测器总成与测试电路

    公开(公告)号:US20120228486A1

    公开(公告)日:2012-09-13

    申请号:US13511679

    申请日:2010-12-07

    IPC分类号: G01T1/17 G01D18/00

    摘要: A radiation detector assembly (20) includes a detector array module (40) configured to convert radiation particles to electrical detection pulses, and an application specific integrated circuit (ASIC) (42) operatively connected with the detector array. The ASIC includes signal processing circuitry (60) configured to digitize an electrical detection pulse received from the detector array, and test circuitry (80) configured to inject a test electrical pulse into the signal processing circuitry. The test circuitry includes a current meter (84) configured to measure the test electrical pulse injected into the signal processing circuitry, and a charge pulse generator (82) configured to generate a test electrical pulse that is injected into the signal processing circuitry. The radiation detector assembly (20) is assembled by operatively connecting the ASIC (42) with the detector array module (40), and the signal processing circuitry (60) of the ASIC of the assembled radiation detector assembly is tested without the use of radiation.

    摘要翻译: 辐射检测器组件(20)包括被配置为将辐射粒子转换成电检测脉冲的检测器阵列模块(40)以及与检测器阵列可操作地连接的专用集成电路(ASIC)(42)。 ASIC包括被配置为数字化从检测器阵列接收的电检测脉冲的信号处理电路(60),以及配置成将测试电脉冲注入到信号处理电路中的测试电路(80)。 测试电路包括配置成测量注入到信号处理电路中的测试电脉冲的电流计(84)和被配置为产生被注入到信号处理电路中的测试电脉冲的充电脉冲发生器(82)。 通过将ASIC(42)与检测器阵列模块(40)可操作地连接来组装放射线检测器组件(20),并且组装的辐射探测器组件的ASIC的信号处理电路(60)被测试而不使用辐射 。