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    Digital readout architecture for four side buttable digital X-ray detector
    11.
    发明授权
    Digital readout architecture for four side buttable digital X-ray detector 有权
    数字读出架构，用于四面对面的数字X射线探测器

    公开(公告)号：US09588240B1

    公开(公告)日：2017-03-07

    申请号：US14923812

    申请日：2015-10-27

    Applicant: General Electric Company

    Inventor： Ibrahim Issoufou Kouada ,  Brian David Yanoff ,  Jonathan David Short ,  Jianjun Guo ,  Biju Jacob

    IPC: G01T1/24

    CPC classification number: G01T1/247 ,  H01L27/14641 ,  H04N5/32 ,  H04N5/3415 ,  H04N5/37455 ,  H04N5/37457

    Abstract: An imager tile including four-side buttable sub-imager pixel arrays with on-chip digitizing electronic readout circuit. Pixel groupings formed from among the plurality of imagers. Readout electronics including a buffer amplifier for each of the pixel groupings are connected to respective outputs of buttable imagers. Shared analog front ends connect to respective buffer amplifiers of pixel groupings. An analog-to-digital converter at a common centroid location relative to the shared analog front ends includes three data lines—selection input/output line to individually select an output, a clock input line, and a shared digital output line. A pixel output from a respective buffer amplifier is addressable by data provided on the selection input/output line, and the pixel output is provided on the shared digital output line. The I/O lines connected to a programmable logic device where the imager serial data input is output as a massively parallel data stream.

    Abstract translation: 一个成像器瓦片，包括具有片上数字化电子读出电路的四面可折叠亚像素像素阵列。 从多个成像器中形成的像素组。 包括用于每个像素分组的缓冲放大器的读出电子器件连接到可压缩成像器的相应输出。 共享模拟前端连接到像素分组的相应缓冲放大器。 相对于共享模拟前端在公共中心位置的模数转换器包括用于单独选择输出，时钟输入线和共享数字输出线的三条数据线选择输入/输出线。 来自相应缓冲放大器的像素输出可通过在选择输入/输出线上提供的数据进行寻址，并且在共享数字输出线上提供像素输出。 连接到可编程逻辑器件的I / O线，其中成像器串行数据输入被输出为大量并行的数据流。

    SOLID STATE PHOTOMULTIPLIER
    12.
    发明申请
    SOLID STATE PHOTOMULTIPLIER 有权
    固态摄影机

    公开(公告)号：US20160358957A1

    公开(公告)日：2016-12-08

    申请号：US15077006

    申请日：2016-03-22

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Jianjun Guo ,  Sergei Ivanovich Dolinsky ,  Jonathan David Short

    IPC: H01L27/146 ,  H01L31/0352

    CPC classification number: H01L27/14612 ,  H01L27/14663 ,  H01L31/035272

    Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a solid state photomultiplier may include an epitaxial layer, a high voltage region formed in the epitaxial layer, a low voltage region formed in the epitaxial layer, and an intermediate region disposed between the high voltage region and low voltage region, wherein the high voltage region is electrically coupled to the low voltage region via the intermediate region, and wherein at least a portion of the epitaxial layer is disposed between the high voltage region and intermediate region and between the low voltage region and the intermediate region.

    Abstract translation: 本文提供了固态光电倍增管的实施例。 在一些实施例中，固体光电倍增器可以包括外延层，在外延层中形成的高电压区域，形成在外延层中的低电压区域和设置在高电压区域和低电压区域之间的中间区域，其中 所述高电压区域经由所述中间区域电耦合到所述低电压区域，并且其中所述外延层的至少一部分设置在所述高压区域和中间区域之间以及所述低电压区域和所述中间区域之间。

    SILICON PHOTOMULTIPLIERS WITH DIGITIZED MICRO-CELLS
    13.
    发明申请
    SILICON PHOTOMULTIPLIERS WITH DIGITIZED MICRO-CELLS 有权
    带有微量细胞的硅光电子器件

    公开(公告)号：US20160231168A1

    公开(公告)日：2016-08-11

    申请号：US14615806

    申请日：2015-02-06

    Applicant: General Electric Company

    Inventor： Jianjun Guo ,  Sergei Ivanovich Dolinsky

    IPC: G01J1/42 ,  G01J1/44

    CPC classification number: G01J1/4228 ,  G01J1/44 ,  G01J2001/4466 ,  G01T1/248 ,  G01T1/2985

    Abstract: A silicon photomultiplier array of microcells including a photon avalanche diode and an electronic circuit configured to provide a first one-shot pulse and a second one-shot pulse based on a detected current flowing through the photon avalanche diode. The microcells arranged in rows and columns with each microcell of a respective row connected to a respective row data bus connected to a row counter configured to count one or more first one-shot pulses for a predetermined time period, a pixel adder configured to sum the count, and a digital-to-analog converter connected to the pixel adder to convert sum to an analog signal representative of an energy readout. A timing logic circuit configured to provide a validation signal to a counter control logic circuit, and the counter control logic circuit configured to provide one of a start signal, a stop signal, and a reset signal to the row counter.

    Abstract translation: 包括光子雪崩二极管和电子电路的微电池的硅光电倍增管阵列，被配置为基于流过光子雪崩二极管的检测电流提供第一单触发脉冲和第二单触发脉冲。 微电池以行和列排列，每行的每个微电池连接到连接到配置成在一个预定时间段内对一个或多个第一单触发脉冲进行计数的行计数器的相应行数据总线;像素加法器， 计数器和连接到像素加法器的数模转换器将和转换为表示能量读出的模拟信号。 定时逻辑电路，被配置为向计数器控制逻辑电路提供有效信号，并且所述计数器控制逻辑电路经配置以向所述行计数器提供起始信号，停止信号和复位信号中的一个。

    Radiation detector assembly
    14.
    发明授权
    Radiation detector assembly 有权

    公开(公告)号：US10283557B2

    公开(公告)日：2019-05-07

    申请号：US14985785

    申请日：2015-12-31

    Applicant: General Electric Company

    Inventor： Biju Jacob ,  Habib Vafi ,  Brian David Yanoff ,  Jeffery Jon Shaw ,  Jianjun Guo

    IPC: H01L27/00 ,  H01L27/146 ,  G01T1/20 ,  G01T1/24

    Abstract: Various approaches are discussed for using four-side buttable CMOS tiles to fabricate detector panels, including large-area detector panels. Fabrication may utilize pads and interconnect structures formed on the top or bottom of the CMOS tiles. Electrical connection and readout may utilize readout and digitization circuitry provided on the CMOS tiles themselves such that readout of groups or sub-arrays of pixels occurs at the tile level, while tiles are then readout at the detector level such that readout operations are tiered or multi-level.

    Method for improving timing resolution using depth of interaction correction in PET detector
    15.
    发明授权
    Method for improving timing resolution using depth of interaction correction in PET detector 有权

    公开(公告)号：US10261201B2

    公开(公告)日：2019-04-16

    申请号：US15090156

    申请日：2016-04-04

    Applicant: General Electric Company

    Inventor： Geng Fu ,  Floribertus P M Heukensfeldt Jansen ,  Jianjun Guo ,  Sergei Ivanovich Dolinsky

    IPC: G01T1/202 ,  G01T1/29

    Abstract: A method for determining depth-of-interaction correction in a PET system. The method includes modifying crystal and readout configuration to improve depth-dependent arrival profile of scintillation photons, creating a photon dispersion model within a scintillator crystal, measuring photon arrival profile of individual gamma ray event, deriving an estimated depth-of-interaction, and deriving a gamma ray event time based on a time stamp corrected with the estimated depth-of-interaction. The method further includes modeling dispersion at different depths of interaction within the scintillator crystal, providing a reflector layer to delay back-reflected photons, providing two respective readouts for the same gamma ray event from two respective pixels optically coupled by a backside reflector or modified crystal configuration, calculating a time difference of the photon arrival at the two pixels, and estimating the depth-of-interaction by applying a statistical weighting.

    Computed tomography with detector wobble
    16.
    发明授权
    Computed tomography with detector wobble 有权

    公开(公告)号：US10119924B2

    公开(公告)日：2018-11-06

    申请号：US15087560

    申请日：2016-03-31

    Applicant: General Electric Company

    Inventor： Xue Rui ,  Geng Fu ,  Jianjun Guo ,  Bruno Kristiaan Bernard De Man ,  Brian David Yanoff

    IPC: G01N23/046 ,  G01T1/17 ,  G01T1/29 ,  G01N23/083

    Abstract: The present approach relates to a detector design that allows detector-based wobble using an electronic control scheme. In one implementation, each detector pixel is divided into sub-pixels. The readout of the sub-pixels can be binned with minimal noise penalty to enable the detector wobble without physically shifting the detector or alternating the physical focal spot location, though, as discussed herein alternation of the focal spot location may be used in conjunction with the present approach to further improve radial and longitudinal imaging resolution as well as suppressing artifacts resulted by limited spatial sampling.

    SYSTEMS AND METHODS FOR DETECTOR OUTPUT ADJUSTMENT
    18.
    发明申请
    SYSTEMS AND METHODS FOR DETECTOR OUTPUT ADJUSTMENT 审中-公开

    公开(公告)号：US20180217275A1

    公开(公告)日：2018-08-02

    申请号：US15422833

    申请日：2017-02-02

    Applicant: General Electric Company

    Inventor： Geng Fu ,  Hua Qian ,  Hao Lai ,  Jianjun Guo ,  Adrian Ivan ,  Brian Yanoff

    IPC: G01T1/20 ,  G01T1/208

    CPC classification number: G01T1/2018 ,  G01T1/208

    Abstract: A silicon photomultiplier (SiPM) based detection system includes a plurality of scintillators, SiPMs, a front end circuit, adjustment circuits, and an energy and position processing unit. The SiPMs have a non-linear response to energy deposition corresponding to radiation detection. The adjustment circuit is configured to receive an analog signal from SiPMs, and to provide an adjusted analog signal, which is configured to simulate a signal corresponding to a linear response. The energy and position processing unit utilizes the adjusted signal to provide energy and position information of detected events in the detector block.

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