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    BEAM DETECTION WITH CONTINUOUS DETECTOR READOUT
    2.
    发明申请
    BEAM DETECTION WITH CONTINUOUS DETECTOR READOUT 审中-公开

    公开(公告)号：US20170374295A1

    公开(公告)日：2017-12-28

    申请号：US15525607

    申请日：2015-12-09

    申请人： CARESTREAM HEALTH, INC.

    发明人： Karin Topfer ,  Jeffery R. Hawver ,  Eric M. Welch

    IPC分类号： H04N5/32 ,  H04N5/359 ,  H04N5/361 ,  G01T1/16

    CPC分类号： H04N5/32 ,  G01T1/16 ,  H04N5/3597 ,  H04N5/361

    摘要： A method of operating a DR detector including sequentially capturing image frames in the detector that include at least one dark image. The dark image is stored and a statistical measure for a subset of pixels in a captured image frame is compared with the same statistical measure of a subset of pixels in the stored dark image to detect an x-ray beam impacting the detector. An x-ray beam-on condition is indicated if a sufficient difference in intensity between the pixel subsets is detected. At least one more image frame is captured in the detector after detecting the x-ray beam. The current captured image and the at least one more image frame are added and the dark image is subtracted to form the exposed radiographic image.

    Digital radiography detector image readout process
    3.
    发明授权
    Digital radiography detector image readout process 有权

    公开(公告)号：US10390783B2

    公开(公告)日：2019-08-27

    申请号：US15417279

    申请日：2017-01-27

    申请人： CARESTREAM HEALTH, INC.

    发明人： Jeffery R. Hawver ,  Gordon Geisbuesch

    IPC分类号： A61B6/00 ,  H04N5/32

    摘要： A radiographic detector acquires a first partial exposed image signal during an image readout of each of the rows of photosensors, one row at a time. A first scan of each row includes measuring the charge delivered to each cell of the rows, including some rows having partial charge and other rows having full charge, and obtaining a first null image signal during the scan. A second scan includes measuring remaining charge delivered to those rows having partial charge. The null image signal data is subtracted from a sum of the first two scans.

    Beam detection with continuous detector readout
    5.
    发明授权
    Beam detection with continuous detector readout 有权

    公开(公告)号：US10230906B2

    公开(公告)日：2019-03-12

    申请号：US15525607

    申请日：2015-12-09

    申请人： CARESTREAM HEALTH, INC.

    发明人： Karin Topfer ,  Jeffery R. Hawver ,  Eric M. Welch

    IPC分类号： H04N5/32 ,  H04N5/361 ,  G01T1/16 ,  H04N5/359

    摘要： A method of operating a DR detector including sequentially capturing image frames in the detector that include at least one dark image. The dark image is stored and a statistical measure for a subset of pixels in a captured image frame is compared with the same statistical measure of a subset of pixels in the stored dark image to detect an x-ray beam impacting the detector. An x-ray beam-on condition is indicated if a sufficient difference in intensity between the pixel subsets is detected. At least one more image frame is captured in the detector after detecting the x-ray beam. The current captured image and the at least one more image frame are added and the dark image is subtracted to form the exposed radiographic image.

    Digital radiography detector image readout process
    9.
    发明授权
    Digital radiography detector image readout process 有权
    数字射线检测仪图像读出程序

    公开(公告)号：US09554759B2

    公开(公告)日：2017-01-31

    申请号：US14487189

    申请日：2014-09-16

    申请人： Carestream Health, Inc.

    发明人： Jeffery R. Hawver ,  Gordon Geisbuesch

    IPC分类号： A61B6/00 ,  H04N5/32

    CPC分类号： A61B6/4225 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/542 ,  H04N5/32

    摘要： A radiographic detector acquires a first partial exposed image signal during an image readout of each of the rows of photosensors, one row at a time. A first scan of each row includes measuring the charge delivered to each cell of the rows, including some rows having partial charge and other rows having full charge, and obtaining a first null image signal during the scan. A second scan includes measuring remaining charge delivered to those rows having partial charge. The null image signal data is subtracted from a sum of the first two scans.

    摘要翻译： 放射线检测器在每一行光电传感器的图像读出期间获取第一部分曝光的图像信号，一次一行。 每行的第一扫描包括测量传送到行的每个单元的电荷，包括具有部分电荷的一些行和具有完全充电的其它行，以及在扫描期间获得第一零图像信号。 第二扫描包括测量递送到具有部分电荷的行的剩余电荷。 从前两次扫描的和中减去空图像信号数据。