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公开(公告)号：US07956332B2
公开(公告)日：2011-06-07
申请号：US12260819
申请日：2008-10-29
CPC分类号： G01T1/20
摘要： A technique is provided for forming a multi-layer radiation detector. The technique includes a charge-integrating photodetector layer provided in conjunction with a photon-counting photodetector layer. In one embodiment, a plurality of photon-counting photosensor elements are disposed adjacent to a plurality of charge-integrating photosensor elements of the respective layers. Both sets of elements are connected to readout circuitry and a data acquisition system. The detector arrangement may be used for energy discriminating computed tomography imaging and similar computed tomography systems.
摘要翻译： 提供了一种用于形成多层辐射检测器的技术。 该技术包括与光子计数光电检测器层一起提供的电荷积分光电检测器层。 在一个实施例中，多个光子计数光电传感器元件被布置成与各个层的多个电荷积分光电传感元件相邻。 两组元件连接到读出电路和数据采集系统。 检测器装置可用于能量鉴别计算机断层摄影和类似的计算机断层摄影系统。
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公开(公告)号：US20100102242A1
公开(公告)日：2010-04-29
申请号：US12260819
申请日：2008-10-29
IPC分类号： G01T1/20
CPC分类号： G01T1/20
摘要： A technique is provided for forming a multi-layer radiation detector. The technique includes a charge-integrating photodetector layer provided in conjunction with a photon-counting photodetector layer. In one embodiment, a plurality of photon-counting photosensor elements are disposed adjacent to a plurality of charge-integrating photosensor elements of the respective layers. Both sets of elements are connected to readout circuitry and a data acquisition system. The detector arrangement may be used for energy discriminating computed tomography imaging and similar computed tomography systems.
摘要翻译： 提供了一种用于形成多层辐射检测器的技术。 该技术包括与光子计数光电检测器层一起提供的电荷积分光电检测器层。 在一个实施例中，多个光子计数光电传感器元件被布置成与各个层的多个电荷积分光电传感元件相邻。 两组元件连接到读出电路和数据采集系统。 检测器装置可用于能量鉴别计算机断层摄影和类似的计算机断层摄影系统。
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公开(公告)号：US08110806B2
公开(公告)日：2012-02-07
申请号：US12262222
申请日：2008-10-31
IPC分类号： G01T1/20
CPC分类号： H01L31/107 , G01T1/208 , H01L27/14609 , H01L27/14623 , H01L27/14659
摘要： A solid-state photomultiplier is provided for use in imaging detectors. The solid-state photomultiplier includes a plurality of microcells configured to detect impinging photons. Each of the plurality of microcells further includes a photodiode coupled to a common electrode through a quenching resistor and configured to convert the impinging photons into electrical signals, and an impedance device coupled in parallel with the quenching resistor so as to reduce overall quenching impedance at high frequency. Further, techniques are provided for implementing low impedance device with controllable value to the SSPM for optimized timing resolution.
摘要翻译： 提供固态光电倍增管用于成像检测器。 固态光电倍增管包括被配置为检测入射光子的多个微单元。 多个微单元中的每一个还包括光电二极管，其通过淬火电阻器耦合到公共电极并且被配置为将入射光子转换成电信号，以及与淬灭电阻器并联耦合的阻抗装置，以便降低高温下的整体猝熄阻抗 频率。 此外，提供了用于实现具有可控制值的SSPM的低阻抗器件以优化时序分辨率的技术。
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公开(公告)号：US20100108900A1
公开(公告)日：2010-05-06
申请号：US12262222
申请日：2008-10-31
CPC分类号： H01L31/107 , G01T1/208 , H01L27/14609 , H01L27/14623 , H01L27/14659
摘要： A solid-state photomultiplier is provided for use in imaging detectors. The solid-state photomultiplier includes a plurality of microcells configured to detect impinging photons. Each of the plurality of microcells further includes a photodiode coupled to a common electrode through a quenching resistor and configured to convert the impinging photons into electrical signals, and an impedance device coupled in parallel with the quenching resistor so as to reduce overall quenching impedance at high frequency. Further, techniques are provided for implementing low impedance device with controllable value to the SSPM for optimized timing resolution.
摘要翻译： 提供固态光电倍增管用于成像检测器。 固态光电倍增管包括多个被配置成检测入射光子的微小区。 多个微单元中的每一个还包括光电二极管，其通过淬火电阻器耦合到公共电极并且被配置为将入射光子转换成电信号，以及与淬灭电阻器并联耦合的阻抗装置，以便降低高温下的整体猝熄阻抗 频率。 此外，提供了用于实现具有可控制值的SSPM的低阻抗器件以优化时序分辨率的技术。
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公开(公告)号：US20080240341A1
公开(公告)日：2008-10-02
申请号：US11692104
申请日：2007-03-27
CPC分类号： G01T1/2985 , A61B6/032 , G01T1/2018
摘要： An imaging system includes a gantry having a bore therethrough designed to receive a patient being translated through the bore an x-ray source disposed in the gantry and configured to emit x-rays toward the patient, and a detector module disposed in the gantry to receive x-rays attenuated by the patient. The detector module includes a scintillator configured to absorb the x-rays and to convert the x-rays into optical photons, a device configured to receive the optical photons and to convert the optical photons to electrical signals, and an adaptive data acquisition system (DAS) configured to switch an operating mode of the device from a charge integrating mode to a photon counting mode, and vice versa.
摘要翻译： 成像系统包括具有穿过其中的孔的机架，其被设计成接收通过所述孔翻转的患者，设置在所述台架中的x射线源并且被配置为朝向患者发射x射线;以及检测器模块，设置在所述台架中以接收 由患者衰减的x射线。 检测器模块包括被配置为吸收x射线并将x射线转换成光学光子的闪烁器，被配置为接收光学光子并将光学光子转换成电信号的器件，以及自适应数据采集系统（DAS ）被配置为将器件的操作模式从电荷积分模式切换到光子计数模式，反之亦然。
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公开(公告)号：US08581254B2
公开(公告)日：2013-11-12
申请号：US13250568
申请日：2011-09-30
CPC分类号： G01T1/2018
摘要： The present approach involves a radiation detector module with increased quantum efficiency and methods of fabricating the radiation detector module. The module includes a scintillator substrate and a photodetector fabricated on the scintillator substrate. The photodetector includes an anode, active organic elements, and a cathode. The module also includes a pixel element array disposed over the photodetector. During imaging, radiation attenuated by an object to be imaged may propagate through the pixel element array and through the layers of the photodetector to be absorbed by the scintillator which in response emits optical photons. The photodetector may absorb the photons and generate charge with improved quantum efficiency, as the photons may not be obscured by the cathode or other layers of the module. Further, the module may include reflective materials in the cathode and at the pixel element array to direct optical photons towards the active organic elements.
摘要翻译： 本方法涉及具有增加的量子效率的辐射检测器模块和制造辐射探测器模块的方法。 该模块包括闪烁体基板和在闪烁体基板上制造的光电检测器。 光检测器包括阳极，有源有机元件和阴极。 模块还包括设置在光电检测器上方的像素元件阵列。 在成像期间，由待成像的物体衰减的辐射可以通过像素元件阵列传播并且通过光电检测器的层传播，以被闪烁体吸收，闪烁体响应于发射光子。 光电检测器可以吸收光子并产生具有改善的量子效率的电荷，因为光子可能不被模块的阴极或其它层遮蔽。 此外，模块可以包括在阴极和像素元件阵列处的反射材料，以将光学光子引向有源有机元件。
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公开(公告)号：US20130082264A1
公开(公告)日：2013-04-04
申请号：US13250568
申请日：2011-09-30
IPC分类号： H01L29/786 , H01L21/02
CPC分类号： G01T1/2018
摘要： The present approach involves a radiation detector module with increased quantum efficiency and methods of fabricating the radiation detector module. The module includes a scintillator substrate and a photodetector fabricated on the scintillator substrate. The photodetector includes an anode, active organic elements, and a cathode. The module also includes a pixel element array disposed over the photodetector. During imaging, radiation attenuated by an object to be imaged may propagate through the pixel element array and through the layers of the photodetector to be absorbed by the scintillator which in response emits optical photons. The photodetector may absorb the photons and generate charge with improved quantum efficiency, as the photons may not be obscured by the cathode or other layers of the module. Further, the module may include reflective materials in the cathode and at the pixel element array to direct optical photons towards the active organic elements.
摘要翻译： 本方法涉及具有增加的量子效率的辐射检测器模块和制造辐射探测器模块的方法。 该模块包括闪烁体基板和在闪烁体基板上制造的光电检测器。 光检测器包括阳极，有源有机元件和阴极。 模块还包括设置在光电检测器上方的像素元件阵列。 在成像期间，由待成像的物体衰减的辐射可以通过像素元件阵列传播并且通过光电检测器的层传播，以被闪烁体吸收，闪烁体响应于发射光子。 光电检测器可以吸收光子并产生具有改善的量子效率的电荷，因为光子可能不被模块的阴极或其它层遮蔽。 此外，模块可以包括在阴极和像素元件阵列处的反射材料，以将光学光子引向有源有机元件。
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公开(公告)号：US07495228B1
公开(公告)日：2009-02-24
申请号：US11971533
申请日：2008-03-31
申请人： Douglas Albagli , Aaron Judy Couture , William Andrew Hennessy , Kenneth Scott Kump , Feng Gao , James Zhengshe Liu
发明人： Douglas Albagli , Aaron Judy Couture , William Andrew Hennessy , Kenneth Scott Kump , Feng Gao , James Zhengshe Liu
IPC分类号： H01L27/146
CPC分类号： H01L27/14663 , H01L27/14609 , H01L27/14636 , H04N5/357 , H04N5/374
摘要： A dual function detector device operates in either a normal operating mode or in an EMI correction mode to suppress effects of EMI within the detector. The detector device may be a flat panel x-ray detectors used in x-ray imaging systems. The device has a pixel architecture and panel read-out technique that enables real-time, high spatial frequency measurement of noise induced by electromagnetic radiation on a digital x-ray detector. The measurement can be used to calibrate the detector in real-time to attain artifact-free imaging in all environments, including those that contain temporally and spatially changing electromagnetic fields.
摘要翻译： 双功能检测器装置在正常操作模式或EMI校正模式下工作，以抑制EMI在检测器内的影响。 检测器装置可以是用于x射线成像系统中的平板X射线检测器。 该器件具有像素架构和面板读出技术，能够对数字X射线检测器上的电磁辐射引起的噪声进行实时，高空间频率测量。 该测量可用于实时校准检测器，以在所有环境中实现无伪像成像，包括那些包含时间和空间变化的电磁场的成像。
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公开(公告)号：US07208742B1
公开(公告)日：2007-04-24
申请号：US11300796
申请日：2005-12-15
IPC分类号： G01T1/20
CPC分类号： G01T1/2018
摘要： A photodetector for X-ray applications is disclosed incorporating a photodiode design with reduced leakage at each pixel location. The photodiode is of a reduced surface area and has a peripheral edge of reduced length. The length may be minimized by making the photodiode round. The diode is surrounded by a reflective layer that may act as a contact for the diode. Photons are reflected by the reflective layer back towards the reduced area diode to maintain good sensitivity. The reflective/contact layer may form a capacitor with another contact layer by disposing a dielectric layer therebetween, thereby increasing the effective capacitance of the photodiode.
摘要翻译： 公开了一种用于X射线应用的光电检测器，其结合光电二极管设计，在每个像素位置具有减少的泄漏 光电二极管具有减小的表面积并且具有减小长度的周边边缘。 可以通过使光电二极管圆形化来减小长度。 二极管被可以用作二极管的触点的反射层包围。 光子被反射层反射回减小区域二极管以保持良好的灵敏度。 反射/接触层可以通过在其间布置介电层而与另一接触层形成电容器，从而增加光电二极管的有效电容。
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公开(公告)号：US08605862B2
公开(公告)日：2013-12-10
申请号：US12891016
申请日：2010-09-27
申请人： Paul Richard Granfors , John Robert Lamberty , Richard Gordon Cronce , Ping Xue , Marc Schaepkens , Aaron Judy Couture , Douglas Albagli
发明人： Paul Richard Granfors , John Robert Lamberty , Richard Gordon Cronce , Ping Xue , Marc Schaepkens , Aaron Judy Couture , Douglas Albagli
CPC分类号： H01L27/14658 , H01L27/14623 , H04N5/32 , H04N5/35563
摘要： In one embodiment, a digital X-ray detector is provided with a plurality of pixel regions. Each pixel region includes a first photodiode having a first area and a second photodiode having a second area equal to or smaller than the first area. The digital X-ray detector also includes a shielding structure that overlies the first and second photodiodes of each pixel region with the shielding structure shielding proportionally less of the first photodiode than of the second photodiode to provide the first photodiode with a first sensitivity and the second photodiode with a second sensitivity lower than the first sensitivity.
摘要翻译： 在一个实施例中，数字X射线检测器设置有多个像素区域。 每个像素区域包括具有第一区域的第一光电二极管和具有等于或小于第一区域的第二区域的第二光电二极管。 数字X射线检测器还包括覆盖每个像素区域的第一和第二光电二极管的屏蔽结构，屏蔽结构屏蔽第一光电二极管比第二光电二极管成比例地少，以提供第一光敏二极管的第一灵敏度，而第二光电二极管 光电二极管的灵敏度低于第一灵敏度。
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