公开(公告)号：US20170123079A1

公开(公告)日：2017-05-04

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 ,  G01T1/24

CPC classification number: G01T1/2018 ,  G01T1/24 ,  H04N5/32 ,  H04N5/3205 ,  H04N5/35554 ,  H04N5/361 ,  H04N5/3651

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：US20170105687A1

公开(公告)日：2017-04-20

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

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：US20160381311A1

公开(公告)日：2016-12-29

申请号：US14750067

申请日：2015-06-25

Applicant: General Electric Company

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

IPC: H04N5/369 ,  H04N5/378

CPC classification number: H04N5/369 ,  H01L27/14641 ,  H04N5/347 ,  H04N5/37457 ,  H04N5/378

Abstract: An imager including sub-imager pixel arrays having a plurality of four-side buttable imagers distributed on a substrate and an on-chip digitizing readout circuit. Pixel groupings formed from among the plurality of four-side buttable imagers. The readout electronics including a buffer amplifier for each of the pixel groupings and connected to respective outputs of each four-side buttable imager of the pixel grouping. A plurality of shared analog front ends, each shared analog front end connected to respective multiple buffer amplifiers from among the plurality of pixel groupings. An analog-to-digital converter located at a common centroid location relative to the plurality of shared analog front ends, the analog-to-digital converter having a fully addressable input selection to individually select an output from each of the plurality of shared analog front ends. An output of the analog-to-digital converter connected to a trace on a back surface of the wafer substrate by a through-substrate-via.

Abstract translation: 包括具有分布在基板上的多个四边对称成像器的子成像像素阵列和片上数字化读出电路的成像器。 从多个四面对面的成像器中形成的像素组。 读出电路包括用于每个像素分组的缓冲放大器，并且连接到像素分组的每个四面可图像成像器的相应输出。 多个共享模拟前端，每个共享模拟前端从多个像素分组中连接到相应的多个缓冲放大器。 一种模数转换器，位于相对于多个共享模拟前端的公共中心位置处，该模数转换器具有完全可寻址的输入选择，以单独选择多个共享模拟前端中的每一个的输出 结束。 模数转换器的输出通过基板通孔连接到晶片衬底背面上的迹线。

公开(公告)号：US20160363674A1

公开(公告)日：2016-12-15

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

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.

Abstract translation: 提供数字X射线检测器。 数字X射线检测器包括多个像素，每个像素包括钉扎光电二极管和耦合到每个钉扎光电二极管的多个读出通道，其中每个读出通道包括至少一个电荷存储电容器，放大器和传输门。 数字X射线检测器还包括耦合到多个像素的每个像素的控制电路，其被配置为通过控制每个相应读出通道的相应的至少一个电荷存储电容器来选择性地控制由每个被钉扎的光电二极管产生的光电荷的流动 每个相应的读出通道的每个相应的传输门。