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公开(公告)号：US20110249148A1
公开(公告)日：2011-10-13
申请号：US13139626
申请日：2009-11-19
IPC分类号： H04N9/68
CPC分类号： H04N9/045 , G01S17/023 , G01S17/10 , G01S17/89 , H04N5/3696
摘要： A color imaging device comprises: one or more arrays (10, RA, GA, BA) of color selective photodetectors (R, G, B) configured to acquire a color image of a subject; a set of avalanche photodiode photodetectors (APD) arranged to acquire a luminance image of the subject; and digital image processing circuitry (30) configured to process the acquired color image and the acquired luminance image to generate an output image of the subject. In some embodiments the avalanche photodiode photodetectors are configured to perform photon counting. In some embodiments, the one or more arrays comprise an imaging array (10) including the color-selective photodetectors (R, G, B) distributed across the imaging array with the set of avalanche photodiode photodetectors (APD) interspersed amongst the color-selective photodetectors.
摘要翻译： 彩色成像装置包括：被配置为获取被摄体的彩色图像的彩色选择性光电检测器（R，G，B）的一个或多个阵列（10，RA，GA，BA） 布置成获取被摄体的亮度图像的一组雪崩光电二极管光电检测器（APD） 以及数字图像处理电路（30），被配置为处理所获取的彩色图像和所获取的亮度图像以生成被摄体的输出图像。 在一些实施例中，雪崩光电二极管光电探测器被配置为执行光子计数。 在一些实施例中，一个或多个阵列包括成像阵列（10），该成像阵列包括分布在成像阵列上的颜色选择性光电检测器（R，G，B），其中所述一组雪崩光电二极管光电检测器（APD）散布在颜色选择性 光电探测器
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公开(公告)号：US08610808B2
公开(公告)日：2013-12-17
申请号：US13139626
申请日：2009-11-19
IPC分类号： H04N9/083 , H04N3/14 , H04N5/335 , H04N9/04 , H01L31/107
CPC分类号： H04N9/045 , G01S17/023 , G01S17/10 , G01S17/89 , H04N5/3696
摘要： A color imaging device comprises: one or more arrays (10, RA, GA, BA) of color selective photodetectors (R, G, B) configured to acquire a color image of a subject; a set of avalanche photodiode photodetectors (APD) arranged to acquire a luminance image of the subject; and digital image processing circuitry (30) configured to process the acquired color image and the acquired luminance image to generate an output image of the subject. In some embodiments the avalanche photodiode photodetectors are configured to perform photon counting. In some embodiments, the one or more arrays comprise an imaging array (10) including the color-selective photodetectors (R, G, B) distributed across the imaging array with the set of avalanche photodiode photodetectors (APD) interspersed amongst the color-selective photodetectors.
摘要翻译： 彩色成像装置包括：被配置为获取被摄体的彩色图像的彩色选择光电检测器（R，G，B）的一个或多个阵列（10，RA，GA，BA） 布置成获取被摄体的亮度图像的一组雪崩光电二极管光电检测器（APD） 以及数字图像处理电路（30），被配置为处理所获取的彩色图像和所获取的亮度图像以生成被摄体的输出图像。 在一些实施例中，雪崩光电二极管光电探测器被配置为执行光子计数。 在一些实施例中，一个或多个阵列包括成像阵列（10），该成像阵列包括分布在成像阵列上的颜色选择性光电检测器（R，G，B），其中所述一组雪崩光电二极管光电检测器（APD）散布在颜色选择性 光电探测器
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3.发明授权Temperature compensation circuit for silicon photomultipliers and other single photon counters 有权硅光电倍增管和其他单光子计数器的温度补偿电路公开(公告)号：US08476594B2
公开(公告)日：2013-07-02
申请号：US13139307
申请日：2009-11-19
CPC分类号： G01T1/2985 , A61B6/037 , G01T1/2018
摘要： A PET scanner (8) includes a ring of detector modules (10) encircling an imaging region (12). Each of the detector modules includes at least one detector pixel (24,34). Each detector pixel includes a scintillator (20, 30) optically coupled to one or more sensor APDs (54) that are biased in a breakdown region in a Geiger mode. The sensor APDs output a pulse in response to the light from the scintillator corresponding to a single incident radiation photon. A reference APD (26, 36) also biased in a break-down down region in a Geiger mode is optically shielded from light and outputs a temperature dependent signal. At least one temperature compensation circuit (40) adjusts a bias voltage applied to the sensor APDs based on the temperature dependent signal.
摘要翻译： PET扫描器（8）包括围绕成像区域（12）的检测器模块环（10）。 每个检测器模块包括至少一个检测器像素（24,34）。 每个检测器像素包括光学耦合到以盖革模式偏置在击穿区域中的一个或多个传感器APD（54）的闪烁体（20,30）。 传感器APD响应于来自闪烁体的对应于单个入射辐射光子的光输出脉冲。 参考APD（26,36）也在Geiger模式的偏压下降区域偏压光学屏蔽光并输出温度依赖信号。 至少一个温度补偿电路（40）根据温度依赖信号来调节施加到传感器APD的偏置电压。
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公开(公告)号：US09995829B2
公开(公告)日：2018-06-12
申请号：US13132934
申请日：2009-11-16
CPC分类号： G01T1/1644 , A61B6/037 , G01T1/00
摘要： When detecting scintillation events in a nuclear imaging system, time-stamping and energy-gating processing is incorporated into autonomous detection modules (ADM) (14) to reduce downstream processing. Each ADM (14) is removably coupled to a detector fixture (13), and comprises a scintillation crystal array (66) and associated light detect or (s) (64), such as a silicon photomultiplier or the like. The light detector(s) (64) is coupled to a processing module (62) in or on the ADM (14), which performs the energy gating and time-stamping.
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5.发明申请TEMPERATURE COMPENSATION CIRCUIT FOR SILICON PHOTOMULTIPLIERS AND OTHER SINGLE PHOTON COUNTERS 有权硅光电子器件和其他单光子计数器的温度补偿电路公开(公告)号：US20110248175A1
公开(公告)日：2011-10-13
申请号：US13139307
申请日：2009-11-19
CPC分类号： G01T1/2985 , A61B6/037 , G01T1/2018
摘要： A PET scanner (8) includes a ring of detector modules (10) encircling an imaging region (12). Each of the detector modules includes at least one detector pixel (24,34). Each detector pixel includes a scintillator (20, 30) optically coupled to one or more sensor APDs (54) that are biased in a breakdown region in a Geiger mode. The sensor APDs output a pulse in response to the light from the scintillator corresponding to a single incident radiation photon. A reference APD (26, 36) also biased in a break-down down region in a Geiger mode is optically shielded from light and outputs a temperature dependent signal. At least one temperature compensation circuit (40) adjusts a bias voltage applied to the sensor APDs based on the temperature dependent signal.
摘要翻译： PET扫描器（8）包括围绕成像区域（12）的检测器模块环（10）。 每个检测器模块包括至少一个检测器像素（24,34）。 每个检测器像素包括光学耦合到以盖革模式偏置在击穿区域中的一个或多个传感器APD（54）的闪烁体（20,30）。 传感器APD响应于来自闪烁体的对应于单个入射辐射光子的光输出脉冲。 参考APD（26,36）也在Geiger模式的偏压下降区域偏压光学屏蔽光并输出温度依赖信号。 至少一个温度补偿电路（40）根据温度依赖信号来调节施加到传感器APD的偏置电压。
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6.发明申请AUTONOMOUS DETECTOR MODULE AS A BUILDING BLOCK FOR SCALABLE PET AND SPECT SYSTEMS 有权自动检测模块作为可扩展PET和SPECT系统的建筑块公开(公告)号：US20110240864A1
公开(公告)日：2011-10-06
申请号：US13132934
申请日：2009-11-16
CPC分类号： G01T1/1644 , A61B6/037 , G01T1/00
摘要： When detecting scintillation events in a nuclear imaging system, time-stamping and energy-gating processing is incorporated into autonomous detection modules (ADM) (14) to reduce downstream processing. Each ADM (14) is removably coupled to a detector fixture (13), and comprises a scintillation crystal array (66) and associated light detect or (s) (64), such as a silicon photomultiplier or the like. The light detector(s) (64) is coupled to a processing module (62) in or on the ADM (14), which performs the energy gating and time-stamping.
摘要翻译： 当检测核成像系统中的闪烁事件时，时间戳和能量门控处理被并入到自主检测模块（ADM）（14）中以减少下游处理。 每个ADM（14）可移除地耦合到检测器夹具（13），并且包括闪烁晶体阵列（66）和相关联的光检测（64），例如硅光电倍增管等。 光检测器（64）耦合到ADM（14）中或其上的处理模块（62），其执行能量门控和时间戳。
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公开(公告)号：US08395127B1
公开(公告)日：2013-03-12
申请号：US12351033
申请日：2009-01-09
申请人： Thomas Frach , Gordian Prescher
发明人： Thomas Frach , Gordian Prescher
IPC分类号： G01T1/208
CPC分类号： G01T1/1642 , A61B6/037 , G01T1/2018 , G01T1/208 , G01T1/2985
摘要： A radiation detector includes an array of detector pixels each including an array of detector cells. Each detector cell includes a photodiode biased in a breakdown region and digital circuitry coupled with the photodiode and configured to output a first digital value in a quiescent state and a second digital value responsive to photon detection by the photodiode. Digital triggering circuitry is configured to output a trigger signal indicative of a start of an integration time period responsive to a selected number of one or more of the detector cells transitioning from the first digital value to the second digital value. Readout digital circuitry accumulates a count of a number of transitions of detector cells of the array of detector cells from the first digital state to the second digital state over the integration time period.
摘要翻译： 辐射检测器包括检测器像素的阵列，每个检测器像素包括检测器单元的阵列。 每个检测器单元包括偏置在击穿区域中的光电二极管和与光电二极管耦合的数字电路，并且被配置为输出响应于光电二极管的光子检测的静止状态的第一数字值和第二数字值。 数字触发电路被配置为响应于从第一数字值转换到第二数字值的一个或多个检测器单元的选定数量，输出指示积分时间段开始的触发信号。 读出数字电路在积分时间段内累积检测器单元阵列的检测器单元从第一数字状态到第二数字状态的转移次数的计数。
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公开(公告)号：US08723132B2
公开(公告)日：2014-05-13
申请号：US12933147
申请日：2009-03-12
申请人： Christian Baeumer , Thomas Frach , Christoph Herrmann , Gordian Prescher , Torsten Solf , Roger Steadman Booker , Guenter Zeitler
发明人： Christian Baeumer , Thomas Frach , Christoph Herrmann , Gordian Prescher , Torsten Solf , Roger Steadman Booker , Guenter Zeitler
IPC分类号： G01T1/208
CPC分类号： G01T1/2018 , G01T1/17
摘要： The invention relates to a radiation detector that is particularly suited for energy resolved single X-ray photon detection in a CT scanner. In a preferred embodiment, the detector has an array of scintillator elements in which incident X-ray photons are converted into bursts of optical photons. Pixels associated to the scintillator elements determine the numbers of optical photons they receive within predetermined acquisition intervals. These numbers can then be digitally processed to detect single X-ray photons and to determine their energy. The pixels may particularly be realized by avalanche photodiodes with associated digital electronic circuits for data processing.
摘要翻译： 本发明涉及一种特别适用于CT扫描仪中的能量分辨单X射线光子检测的辐射探测器。 在优选实施例中，检测器具有闪烁体元件阵列，其中入射的X射线光子被转换成光子光子的脉冲串。 与闪烁体元件相关联的像素确定它们在预定采集间隔内接收的光子的数量。 然后可以对这些数字进行数字处理，以检测单个X射线光子并确定其能量。 像素可以特别由具有用于数据处理的相关数字电子电路的雪崩光电二极管实现。
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公开(公告)号：US08519340B2
公开(公告)日：2013-08-27
申请号：US13139618
申请日：2009-11-19
申请人： Thomas Frach , Gordian Prescher
发明人： Thomas Frach , Gordian Prescher
IPC分类号： G01T1/20
CPC分类号： G01T1/2018
摘要： When detecting photons in a computed tomography (CT) detector, a sensor (10, 38) includes a photodiode that is switchable between liner and Geiger operation modes to increase sensing range. When signal to noise ratio (SNR) is high, a large bias voltage is applied to the photodiode (12) to charge it beyond its breakdown voltage, which makes it sensitive to single photons and causes it to operate in Geiger mode. When a photon is received at the photodiode (12), a readout transistor (18) senses the voltage drop across the photodiode (12) to detect the photon. Alternatively, when SNR is low, a low bias voltage is applied to the photodiode (12) to cause it to operate in linear mode.
摘要翻译： 当在计算机断层摄影（CT）检测器中检测光子时，传感器（10,38）包括光电二极管，其可在衬管和盖革格操作模式之间切换以增加感测范围。 当信噪比（SNR）较高时，对光电二极管（12）施加较大的偏置电压，使其超过其击穿电压，这使其对单个光子敏感，并使其在盖革模式下运行。 当在光电二极管（12）处接收到光子时，读出晶体管（18）感测光电二极管（12）两端的电压降以检测光子。 或者，当SNR低时，将低偏压施加到光电二极管（12），使其以线性模式工作。
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公开(公告)号：US20110233413A1
公开(公告)日：2011-09-29
申请号：US12672074
申请日：2008-08-06
申请人： Gordian Prescher , Thomas Frach , Andreas Thon
发明人： Gordian Prescher , Thomas Frach , Andreas Thon
IPC分类号： G01T1/24
CPC分类号： G01T1/1642 , G01T1/248
摘要： An apparatus (208) includes a plurality of photosensors (310). Photon trigger signals produced in response to signals from the sensors are received by a trigger line network that includes segment (302), intermediate (304), and master (306) lines. The trigger network is configured to reduce a temporal skew introduced by the trigger line network. Validation logic (324) provides a trigger validation output signal (610).
摘要翻译： 装置（208）包括多个光电传感器（310）。 响应于来自传感器的信号产生的光子触发信号由包括段（302），中间（304）和主（306）线的触发线网络接收。 触发网络被配置为减少由触发线网络引入的时间偏差。 验证逻辑（324）提供触发验证输出信号（610）。
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