公开(公告)号：US09024269B2

公开(公告)日：2015-05-05

申请号：US13728299

申请日：2012-12-27

Applicant: General Electric Company

Inventor： James Zhengshe Liu

IPC: G01T1/20 ,  H01L31/18 ,  H01L27/146

CPC classification number: G01T1/2018 ,  H01L27/14663 ,  H01L31/18

Abstract: A digital X-ray detector includes a scintillator that is configured to absorb radiation emitted from an X-ray radiation source and to emit light photons in response to the absorbed radiation. The detector also includes a complementary metal-oxide-semiconductor (CMOS) light imager that is configured to absorb the light photons emitted by the scintillator. The CMOS light imager includes a first surface and a second surface. The first surface is disposed opposite the second surface. The scintillator contacts the first surface of the CMOS light imager. The CMOS light imager further includes a CMOS pixel array with an array of CMOS pixels. Each individual CMOS pixel includes at least two row select transistors.

Abstract translation: 数字X射线检测器包括闪烁体，其被配置为吸收从X射线辐射源发射的辐射并响应于吸收的辐射发射光子。 检测器还包括被配置为吸收由闪烁体发射的光子的互补金属氧化物半导体（CMOS）光成像器。 CMOS光成像仪包括第一表面和第二表面。 第一表面与第二表面相对设置。 闪烁体接触CMOS光成像仪的第一表面。 CMOS光成像仪还包括具有CMOS像素阵列的CMOS像素阵列。 每个单独的CMOS像素包括至少两个行选择晶体管。

公开(公告)号：US11137504B2

公开(公告)日：2021-10-05

申请号：US15365689

申请日：2016-11-30

Applicant: General Electric Company

Inventor： James Zhengshe Liu

IPC: G01T1/36 ,  G01T1/20 ,  G01T1/202 ,  H01L27/146

Abstract: The present approaches relate to the fabrication of non-rectangular (e.g., non-square) light imager panels having comparable active areas to rectangular light imager panels but manufactured using fewer c-Si wafers. Such light imager panels may be generally squircle shaped (e.g., a square or rectangle with one or more rounded corners and may be manufactured using conventional crystalline silicon (c-Si) wafers, such as 8″ wafers.

公开(公告)号：US09997557B2

公开(公告)日：2018-06-12

申请号：US15351690

申请日：2016-11-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： James Zhengshe Liu

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

CPC classification number: H01L27/14663 ,  G01T1/2018 ,  G01T1/24 ,  G01T1/247 ,  H01L27/14609 ,  H01L27/14612 ,  H01L27/14625 ,  H01L27/14629 ,  H01L27/14685 ,  H01L27/14689 ,  H01L27/14692

Abstract: The present approach relates to the fabrication of radiation detectors. In certain embodiments, additive manufacture techniques, such as 3D metallic printing techniques are employed to fabricate one or more parts of a detector. In an example of one such printing embodiment, amorphous silicon may be initially disposed onto a substrate and a laser may be employed to melt some or all of the amorphous silicon so as to form crystalline silicon circuitry of a light imager panel. Such printing techniques may also be employed to fabricate other aspects of a radiation detector, such as a scintillator layer.

公开(公告)号：US09905607B2

公开(公告)日：2018-02-27

申请号：US14811566

申请日：2015-07-28

Applicant: General Electric Company

Inventor： James Zhengshe Liu

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

CPC classification number: H01L27/14663 ,  G01T1/2018 ,  G01T1/24 ,  G01T1/247 ,  H01L27/14609 ,  H01L27/14612 ,  H01L27/14625 ,  H01L27/14629 ,  H01L27/14685 ,  H01L27/14689 ,  H01L27/14692

Abstract: The present approach relates to the fabrication of radiation detectors. In certain embodiments, additive manufacture techniques, such as 3D metallic printing techniques are employed to fabricate one or more parts of a detector. In an example of one such printing embodiment, amorphous silicon may be initially disposed onto a substrate and a laser may be employed to melt some or all of the amorphous silicon so as to form crystalline silicon circuitry of a light imager panel. Such printing techniques may also be employed to fabricate other aspects of a radiation detector, such as a scintillator layer.

公开(公告)号：US09759818B2

公开(公告)日：2017-09-12

申请号：US14478655

申请日：2014-09-05

Applicant: General Electric Company

Inventor： James Zhengshe Liu

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

CPC classification number: G01T1/20 ,  A61B6/4233 ,  G01T1/24 ,  G01T1/2985 ,  H01L27/14607

Abstract: Systems and methods for generating an X-ray image using a digital flat panel detector with a squircle shape are described. The flat panel X-ray detector contains a circuit board, a light imager electrically connected to the circuit board, and a scintillator coupled on the light imager. The detector has superellipse shape or a cornerless shape with a first substantially straight edge and a second substantially straight edge running substantially perpendicular to the first edge, wherein the first and second edges do not physically intersect with each other at 90 degrees. The flat panel detector with this shape can be used in an x-ray imaging system that uses the detector to detect x-rays and produce an x-ray image. With this shape, the active sensing area of the detector can be similar to those currently available with rectangular or square flat panel detectors, while using less material to create the detector.

公开(公告)号：US20170033148A1

公开(公告)日：2017-02-02

申请号：US14811566

申请日：2015-07-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： James Zhengshe Liu

IPC: H01L27/146

CPC classification number: H01L27/14663 ,  G01T1/2018 ,  G01T1/24 ,  G01T1/247 ,  H01L27/14609 ,  H01L27/14612 ,  H01L27/14625 ,  H01L27/14629 ,  H01L27/14685 ,  H01L27/14689 ,  H01L27/14692

Abstract: The present approach relates to the fabrication of radiation detectors. In certain embodiments, additive manufacture techniques, such as 3D metallic printing techniques are employed to fabricate one or more parts of a detector. In an example of one such printing embodiment, amorphous silicon may be initially disposed onto a substrate and a laser may be employed to melt some or all of the amorphous silicon so as to form crystalline silicon circuitry of a light imager panel. Such printing techniques may also be employed to fabricate other aspects of a radiation detector, such as a scintillator layer.

Abstract translation: 本方法涉及辐射探测器的制造。 在某些实施例中，采用诸如3D金属印刷技术的添加剂制造技术来制造检测器的一个或多个部件。 在一个这样的印刷实施例的示例中，可以将非晶硅初始设置在基板上，并且可以使用激光来熔化部分或全部非晶硅，以形成光成像仪面板的晶体硅电路。 也可以采用这种打印技术来制造辐射检测器的其它方面，例如闪烁体层。

公开(公告)号：US20160249877A1

公开(公告)日：2016-09-01

申请号：US15150699

申请日：2016-05-10

Applicant: General Electric Company

Inventor： James Zhengshe Liu ,  Richard Larry Anderton ,  Brian James Grekowicz ,  Bela Janos Kiraly

IPC: A61B6/00 ,  G01T1/17

CPC classification number: G01T1/17 ,  A61B6/4405 ,  A61B6/563 ,  H04N5/32 ,  H04N5/378

Abstract: An imaging system includes an analog-to-digital converter configured to convert an analog pixel value into a first digital pixel value. The imaging system also includes an index value source configured to receive the first digital pixel value from the analog-to-digital converter and to generate a digital index value based on a comparison of the first digital pixel value to a digital reference value. In addition, the imaging system includes a transmitter in communication with the index value source and configured to transmit the digital index value. Further, the imaging system includes an image processing component configured to receive the digital index value and to generate a second digital pixel value based at least in part on the received digital index value and a lookup table of the image processing component.

公开(公告)号：US20150030130A1

公开(公告)日：2015-01-29

申请号：US14512643

申请日：2014-10-13

Applicant: General Electric Company

Inventor： James Zhengshe Liu

IPC: A61B6/00 ,  G06T5/00

CPC classification number: A61B6/585 ,  A61B6/0407 ,  A61B6/4405 ,  A61B6/4441 ,  A61B6/4464 ,  A61B6/5211 ,  A61B6/5258 ,  G06T5/009 ,  G06T2207/10116 ,  G06T2207/30004

Abstract: A computer-implemented method for reducing image artifacts in X-ray image data includes dividing pixels of X-ray image data into a plurality of pixel value regions based on a pixel value of each pixel, wherein each pixel value region has a different range of pixel values. The method also includes generating calibrated X-ray image data for each pixel value region, wherein the respective calibrated X-ray image data for each pixel value region is generated using a different dose of radiation. Further, the method includes calculating a gain slope for each pixel value region based on the calibrated X-ray image data, and calculating a pixel gain correction for the pixels of the X-ray image data based on at least one of the calculated gain slopes.

Abstract translation: 用于减少X射线图像数据中的图像伪影的计算机实现的方法包括：基于每个像素的像素值将X射线图像数据的像素划分为多个像素值区域，其中每个像素值区域具有不同的范围 像素值。 该方法还包括为每个像素值区域生成校准的X射线图像数据，其中使用不同剂量的辐射来生成每个像素值区域的相应校准的X射线图像数据。 此外，该方法包括基于校准的X射线图像数据计算每个像素值区域的增益斜率，并且基于计算出的增益斜率中的至少一个来计算X射线图像数据的像素的像素增益校正 。