-
21.发明授权公开(公告)号：US09405024B2
公开(公告)日：2016-08-02
申请号：US14339489
申请日：2014-07-24
申请人： Thomas Frach , Gordian Prescher
发明人： Thomas Frach , Gordian Prescher
CPC分类号： G01T1/2985 , A61B6/037 , G04F10/005 , H03K5/22 , H03M1/0827 , H03M1/0836
摘要： A radiation detector module for use in a time-of-flight positron emission tomography (TOF-PET) scanner generates a trigger signal indicative of a detected radiation event. A timing circuit including a first time-to-digital converter (TDC) and a second TDC is configured to output a corrected timestamp for the detected radiation event based on a first timestamp determined by the first TDC and a second timestamp determined by the second TDC. The first TDC is synchronized to a first reference clock signal and the second TDC is synchronized to a second reference clock signal, the first and second reference clock signals being asynchronous.
摘要翻译： 用于飞行时间正电子发射断层扫描（TOF-PET）扫描仪的放射线检测器模块产生指示检测到的辐射事件的触发信号。 包括第一时间数字转换器（TDC）和第二TDC的定时电路被配置为基于由第一TDC确定的第一时间戳和由第二TDC确定的第二时间戳输出用于检测到的辐射事件的校正时间戳 。 第一TDC与第一参考时钟信号同步，并且第二TDC与第二参考时钟信号同步，第一和第二参考时钟信号是异步的。
-
公开(公告)号：US09087755B2
公开(公告)日：2015-07-21
申请号：US12597177
申请日：2008-03-28
申请人： Thomas Frach
发明人： Thomas Frach
IPC分类号： H01L31/107 , H01L27/144 , H01L31/18 , H01L27/146
CPC分类号： H01L27/1443 , H01L27/1463 , H01L27/14659 , H01L31/022408 , H01L31/03529 , H01L31/103 , H01L31/107 , H01L31/1804 , Y02E10/50 , Y02E10/547
摘要： A photodiode includes an anode (1202, 1302, 1402) and a cathode (1306, 1406) formed on a semiconductor substrate (402). A vertical electrode (702, 1314, 1414) is in operative electrical communication with a buried component (502, 1312, 1412) of the photodiode. In one implementation, the photodiode is an avalanche photodiode of a silicon photomultiplier. The substrate may also include integrated CMOS readout circuitry (1102).
摘要翻译： 光电二极管包括形成在半导体衬底（402）上的阳极（1202，1302，1402）和阴极（1306,1406）。 垂直电极（702,1314,1414）与光电二极管的掩埋部件（502,1312,1412）工作电连通。 在一个实现中，光电二极管是硅光电倍增管的雪崩光电二极管。 衬底还可以包括集成CMOS读出电路（1102）。
-
23.发明申请公开(公告)号：US20140175294A1
公开(公告)日：2014-06-26
申请号：US14234650
申请日：2012-07-27
申请人： Thomas Frach
发明人： Thomas Frach
CPC分类号： G01T1/248 , G01T1/2018 , G01T1/249 , G01T1/2985 , H04N5/369
摘要： A photon detector (10) includes a detector array (12) comprising single photon avalanche diode (SPAD) detectors (14) configured to break down responsive to impingement of a photon. Trigger circuitry (34) is configured to generate a trigger signal responsive to break down of a SPAD detector of the detector array. Latches (20, 22) are configured to store position coordinates of SPAD detectors of the detector array that are in break down. The latches are configured to latch responsive to a trigger signal generated by the trigger circuitry. The latches may include row latches (22) each connecting with a logical “OR” combination of SPAD detectors of a corresponding row of the detector array, and column latches (20) each connecting with a logical “OR” combination of SPAD detectors of a corresponding column of the detector array. Time to digital converter (TDC) circuitry (28) may generate a digital time stamp for the trigger signal.
摘要翻译： 光子检测器（10）包括检测器阵列（12），其包括单光子雪崩二极管（SPAD）检测器（14），其配置成响应于光子的撞击而分解。 触发电路（34）被配置为响应于检测器阵列的SPAD检测器的分解而产生触发信号。 锁存器（20,22）被配置为存储分解的检测器阵列的SPAD检测器的位置坐标。 锁存器被配置为响应于由触发电路产生的触发信号而锁存。 锁存器可以包括每个与检测器阵列的相应行的SPAD检测器的逻辑“或”组合连接的行锁存器（22），以及每个与逻辑“或”组合的SPAD检测器连接的列锁存器（20） 检测器阵列的相应列。 时间到数字转换器（TDC）电路（28）可以产生用于触发信号的数字时间戳。
-
24.发明申请DETECTOR ARRAY WITH TIME-TO-DIGITAL CONVERSION HAVING IMPROVED TEMPORAL ACCURACY 有权检测器阵列具有时间到数字转换，具有改进的时间精度公开(公告)号：US20140021356A1
公开(公告)日：2014-01-23
申请号：US14009666
申请日：2012-03-29
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/037 , G04F10/005
摘要： A detector (22) detects an event. First and second time-to-digital converters (TDCs) (70, 72) generate first and second time stamps (TS1, TS2) for the detection of the event. The first TDC and the second TDC are both synchronized with a common clock signal (62) that defines a fixed time offset between the second TDC and the first TDC. An autocalibration circuit (120) adjusts the first TDC and the second TDC to keep the time difference between the second time stamp and the first time stamp equal to the fixed time offset between the second TDC and the first TDC. The detector may be a detector array, and trigger circuitry (28) propogates a trigger signal from a trigger detector of the array of detectors to the first and second TDC's. Skew correction circuitry (132, 134, 136, 142, 60, 162) adjusts a timestamp (TS) based on which detector is the triggering detector.
摘要翻译： 检测器（22）检测事件。 第一和第二时间数字转换器（TDC）（70,72）生成用于检测事件的第一和第二时间戳（TS1，TS2）。 第一TDC和第二TDC都与定义第二TDC和第一TDC之间的固定时间偏移的公共时钟信号（62）同步。 自动校准电路（120）调整第一TDC和第二TDC以保持第二时间戳和第一时间戳之间的时间差等于第二TDC与第一TDC之间的固定时间偏移。 检测器可以是检测器阵列，并且触发电路（28）将触发信号从检测器阵列的触发检测器传播到第一和第二TDC。 偏斜校正电路（132,134,136,142,60,162）基于哪个检测器是触发检测器来调整时间戳（TS）。
-
25.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。
-
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
-
27.发明授权Data processing device, tomography apparatus for examination of an object of interest, method of examining an object of interest, computer-readable medium and program element 失效数据处理装置，用于检查感兴趣对象的层析成像装置，检查感兴趣对象的方法，计算机可读介质和程序元素公开(公告)号：US07807981B2
公开(公告)日：2010-10-05
申请号：US12067182
申请日：2006-09-12
申请人： Thomas Frach , Gereon Vogtmeier
发明人： Thomas Frach , Gereon Vogtmeier
CPC分类号： G01N23/046 , A61B6/037 , A61B6/56 , G01N2223/419 , H04B7/04 , H04B7/0619 , H04B17/345
摘要： A data processing device, comprising a plurality of emitter antennas arranged on a movable data acquisition device and adapted to emit electromagnetic radiation including data acquired by the movable data acquisition device, a plurality of receiver antennas each adapted to receive the electromagnetic radiation emitted by each of the plurality of emitter antennas, and a data processing unit coupled to the plurality of receiver antennas and adapted to extract the data acquired by the movable data acquisition device from the electromagnetic radiation received by the plurality of receiver antennas.
摘要翻译： 一种数据处理设备，包括布置在可移动数据采集设备上并适于发射包括由可移动数据采集设备获取的数据的电磁辐射的多个发射天线，多个接收天线，每个接收天线适于接收由 所述多个发射器天线以及耦合到所述多个接收机天线的数据处理单元，并且适于从由所述多个接收机天线接收的电磁辐射中提取由所述可移动数据采集装置获取的数据。
-
公开(公告)号：US07759650B2
公开(公告)日：2010-07-20
申请号：US12298206
申请日：2007-04-10
申请人： Anco Heringa , Thomas Frach , Prabhat Agarwal
发明人： Anco Heringa , Thomas Frach , Prabhat Agarwal
IPC分类号： G01T1/24
CPC分类号： H01L31/115 , H01L27/1446 , H01L31/107 , H01L31/1804 , Y02E10/547 , Y02P70/521
摘要： A radiation detector (46) includes a semiconductor layer(s) (12) formed on a substrate (14) and a scintillator (30) formed on the semiconductor layer(s) (12). The semiconductor layer(s) (12) includes an n-doped region (16) disposed adjacent to the substrate (14), and a p-doped region (18) disposed adjacent to the n-doped region (16). A trench (20) is formed within the semiconductor layer(s) (12) and around the p-doped region (18) and is filled with a material (22) that reduces pn junction curvature at the edges of the pn junction, which reduces breakdown at the edges. The scintillator (30) is disposed over and optically coupled to the p-doped regions (18). The radiation detector (46) further includes at least one conductive electrode (24) that electrically contacts the n-doped region.
摘要翻译： 辐射检测器（46）包括形成在衬底（14）上的半导体层（12）和形成在半导体层（12）上的闪烁体（30）。 半导体层（12）包括邻近衬底（14）设置的n掺杂区域（16）和邻近于n掺杂区域（16）设置的p掺杂区域（18）。 沟槽（20）形成在半导体层（12）内并且围绕p掺杂区域（18）并且填充有减小pn结边缘处的pn结曲率的材料（22），其中 减少边缘的破坏。 闪烁体（30）设置在p掺杂区域（18）上并且光耦合到p掺杂区域（18）。 辐射检测器（46）还包括与n掺杂区域电接触的至少一个导电电极（24）。
-
公开(公告)号：US20090127467A1
公开(公告)日：2009-05-21
申请号：US11997409
申请日：2006-07-27
申请人： Thomas Frach
发明人： Thomas Frach
CPC分类号： G01T1/2985 , A61B6/037
摘要： An imaging system (2) having a scalable event processing architecture includes a plurality of detector modules (4) arranged around an associated imaging region (8) to detect radiation events emitted from a subject disposed within the imaging region (8); a plurality of sets of processing elements (6), each set including processing elements of at least one of the plurality of radiation detector modules (4), each processing element (6) time-stamping an associated detected radiation events; and inserting the time-stamped event into a chronological position within a data stream (10) of events; and coincident detecting circuitry (22, 54) that receives the chronologically ordered stream of events and detects coincident pairs of events for use in reconstructing one or more associated images of the object.
摘要翻译： 具有可扩展事件处理架构的成像系统（2）包括围绕相关联的成像区域（8）布置的多个检测器模块（4），用于检测从设置在成像区域（8）内的对象发射的辐射事件; 多组处理元件（6），每组包括所述多个辐射检测器模块（4）中的至少一个的处理元件，每个处理元件（6）对相关联的检测到的辐射事件进行时间戳; 以及将所述时间戳事件插入事件的数据流（10）内的时间顺序位置; 以及一致的检测电路（22,54），其接收按时间顺序排列的事件流并且检测重合的事件对以用于重建对象的一个或多个相关图像。
-
30.发明授权Detector array with time-to-digital conversion having improved temporal accuracy 有权具有时间 - 数字转换的检测器阵列具有改进的时间精度公开(公告)号：US09354332B2
公开(公告)日：2016-05-31
申请号：US14009666
申请日：2012-03-29
CPC分类号： G01T1/2985 , A61B6/037 , G04F10/005
摘要： A detector (22) detects an event. First and second time-to-digital converters (TDCs) (70, 72) generate first and second time stamps (TS1, TS2) for the detection of the event. The first TDC and the second TDC are both synchronized with a common clock signal (62) that defines a fixed time offset between the second TDC and the first TDC. An autocalibration circuit (120) adjusts the first TDC and the second TDC to keep the time difference between the second time stamp and the first time stamp equal to the fixed time offset between the second TDC and the first TDC. The detector may be a detector array, and trigger circuitry (28) propogates a trigger signal from a trigger detector of the array of detectors to the first and second TDC's. Skew correction circuitry (132, 134, 136, 142, 60, 162) adjusts a timestamp (TS) based on which detector is the triggering detector.
摘要翻译： 检测器（22）检测事件。 第一和第二时间数字转换器（TDC）（70,72）生成用于检测事件的第一和第二时间戳（TS1，TS2）。 第一TDC和第二TDC都与定义第二TDC和第一TDC之间的固定时间偏移的公共时钟信号（62）同步。 自动校准电路（120）调整第一TDC和第二TDC以保持第二时间戳和第一时间戳之间的时间差等于第二TDC与第一TDC之间的固定时间偏移。 检测器可以是检测器阵列，并且触发电路（28）将触发信号从检测器阵列的触发检测器传播到第一和第二TDC。 偏斜校正电路（132,134,136,142,60,162）基于哪个检测器是触发检测器来调整时间戳（TS）。
-
-
-
-
-
-
-
-
-
搜索结果
52 条记录 (耗时 0.022 秒)
