公开(公告)号：US09658347B2

公开(公告)日：2017-05-23

申请号：US14739981

申请日：2015-06-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Biju Jacob ,  Jianjun Guo ,  Brian David Yanoff ,  Uwe Wiedmann

IPC: G01T1/24 ,  H04N5/32 ,  H04N5/355 ,  H04N5/3745

CPC classification number: G01T1/247 ,  H04N5/32 ,  H04N5/3205 ,  H04N5/35572 ,  H04N5/37452

Abstract: A digital X-ray detector is provided. The digital X-ray detector includes multiple pixels, each pixel including a pinned photodiode, and multiple readout channels coupled to each pinned photodiode, wherein each readout channel includes at least one charge-storage capacitor, an amplifier, and a transfer gate. The digital X-ray detector also includes control circuitry coupled to each pixel of the multiple pixels and configured to selectively control a flow of photocharge generated by each pinned photodiode to a respective at least one charge-storage capacitor of each respective readout channel via control of each respective transfer gate of each respective readout channel.

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。

公开(公告)号：US11253212B2

公开(公告)日：2022-02-22

申请号：US16736607

申请日：2020-01-07

Applicant: General Electric Company

Inventor： Biju Jacob ,  Douglas Albagli ,  William Robert Ross ,  William Andrew Hennessy ,  Eric Patrick Davis ,  Bruno Kristiaan Bernard De Man ,  Nicholas Ryan Konkle

IPC: G01T1/20 ,  G01T1/24 ,  A61B6/00 ,  H04N5/32

Abstract: The present disclosure relates to the use of X-ray detector cassettes that may be abutted or overlapped to form a detector assembly suitable for imaging objects that are too large to image using a single X-ray detector cassette. Such a detector assembly may be customized in terms of the size and/or shape of the field-of-view (FOV). In certain embodiments the radiation-sensitive electronics (e.g., readout electronics) are positioned to the side of the X-ray detecting components (e.g., scintillator, TFT array, and so forth), allowing the cassette to be thin relative to other detector devices and allowing the electronics to remain outside the X-ray beam path.

公开(公告)号：US11054532B2

公开(公告)日：2021-07-06

申请号：US16279328

申请日：2019-02-19

Applicant: Prismatic Sensors AB ,  General Electric Company

Inventor： Torbjörn Hjärn ,  Brian David Yanoff ,  Brian Breuer ,  Brian Joseph Graves ,  Cheng Xu ,  Biju Jacob ,  Peter Michael Edic ,  Gregory Scott Zeman

IPC: G01T1/24

Abstract: There is provided an x-ray detector having a number of x-ray detector sub-modules. Each detector sub-module is an edge-on detector sub-module having an array of detector elements extending in at least two directions, wherein one of the directions has a component in the direction of incoming x-rays. The detector sub-modules are stacked one after the other and/or arranged side-by-side. For at least part of the detector sub-modules, the detector sub-modules are arranged for providing a gap between adjacent detector sub-modules, where at least part of the gap is not directed linearly towards the x-ray focal point of an x-ray source.

公开(公告)号：US10677939B2

公开(公告)日：2020-06-09

申请号：US14927244

申请日：2015-10-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Biju Jacob ,  Hao Lai ,  Remy Andre Klausz ,  John Eric Tkaczyk

IPC: G01T1/20 ,  H04N5/32 ,  H04N5/361 ,  H04N5/365 ,  H04N5/355 ,  G01T1/24

Abstract: Improvement of the dynamic range of a radiation detector is described. In one embodiment, one or more non-destructive readout operations are performed during a radiation exposure event to acquire data used to improve the dynamic range of the detector. In one implementation, one or more non-destructive readouts of pixels are performed prior to saturation of the pixels during an X-ray exposure so as to obtain non-saturated measurements at the pixels. In an additional implementation, non-destructive readouts of pixels are performed between exposure events so as to obtain an estimate of electronic noise during a multi-exposure examination.

公开(公告)号：US10433811B2

公开(公告)日：2019-10-08

申请号：US15591932

申请日：2017-05-10

Applicant: General Electric Company

Inventor： Biju Jacob ,  Brian David Yanoff ,  Xue Rui

IPC: A61B6/00 ,  A61B6/03 ,  G01N23/046

Abstract: The present approach relates to self-calibration of CT detectors based on detected misalignment of the detector and X-ray source. The present approach make the detector more robust to changes against temperature and focal spot movements. The diagnostic image generated by energy resolving calibrated response signals is able to present enhanced features compared to conventional CT based diagnostic images.

公开(公告)号：US20190235097A1

公开(公告)日：2019-08-01

申请号：US15881221

申请日：2018-01-26

Applicant: General Electric Company

Inventor： James Liu ,  Nicholas Konkle ,  Biju Jacob ,  Douglas Albagli ,  William Hennessy ,  Habib Vafi

IPC: G01T1/24 ,  H01L27/146 ,  G01T1/20 ,  A61B6/00 ,  A61B6/10 ,  A61B6/06

Abstract: An imager panel for an x-ray detector for obtaining x-ray images of an object is provided that includes a first portion disposed at the center of the hybrid imager panel that can produce images of a first resolution and a second portion disposed at least partially around the first portion that is capable of producing images of a second resolution. The hybrid imager panel provides a hybrid detector that can be selectively operated to obtain images of varying resolutions corresponding to the first resolution from the first portion, the second resolution from the second portion or a combination thereof.

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.

公开(公告)号：US10076292B2

公开(公告)日：2018-09-18

申请号：US14885383

申请日：2015-10-16

Applicant: General Electric Company

Inventor： John Eric Tkaczyk ,  Remy Andre Klausz ,  Biju Jacob

IPC: A61B6/00 ,  A61B6/02 ,  G06T11/00 ,  H01J35/24

CPC classification number: A61B6/4021 ,  A61B6/025 ,  A61B6/4028 ,  A61B6/466 ,  A61B6/502 ,  A61B6/5205 ,  A61B6/54 ,  G06T11/005 ,  G06T11/006 ,  H01J35/24

Abstract: A tomography apparatus includes a multi-focal point x-ray source, a support to travel a trajectory path, a detector having a plurality of pixels, where one of the multi-focal point x-ray source, the detector, and an item-under-test move on the support. A control processor controls a change in the focal point of the x-ray source at discrete points, or continuously, within a measurement region, the focal point change in a direction retrograde to the support arm travel, a detector memory accumulates a digital value representative of a signal charge from at least a portion of the plurality of pixels, the control processor reconstructs a volumetric image of the item-under-test by processing the detector memory contents. A method for continuous tomosynthesis and a computer-readable medium are also disclosed.

公开(公告)号：US20180188385A1

公开(公告)日：2018-07-05

申请号：US15396660

申请日：2016-12-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Nicholas Ryan Konkle ,  Marc Schaepkens ,  German Guillermo Vera ,  Biju Jacob

IPC: G01T1/00 ,  G01T1/24 ,  G01T1/29 ,  A61B6/00

Abstract: An x-ray detector, system and related method are described wherein a light redirection layer is provided and used to redirect light, converted from x-rays by a scintillator, to at least one pixel. The light redirection layer comprises at least one light redirecting cell comprising a channel and a light reflecting region, wherein the channel is arranged relative to the at least one pixel to direct the incoming light away from a non-light sensitive part of the at least one pixel and toward the light sensitive part of the at least one pixel.