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42 条记录 (耗时 0.031 秒)

    Asynchronous calibration and correction of a solid-state detector
    1.
    发明授权
    Asynchronous calibration and correction of a solid-state detector 有权
    固态检测器的异步校准和校正

    公开(公告)号：US07369711B2

    公开(公告)日：2008-05-06

    申请号：US10788070

    申请日：2004-02-26

    申请人： Jibril Odogba ,  Kenneth Scott Kump

    发明人： Jibril Odogba ,  Kenneth Scott Kump

    IPC分类号： G09G3/36 ,  G06K9/40

    CPC分类号： A61B6/585 ,  G06T5/005 ,  G06T5/50 ,  G06T2207/10116 ,  G06T2207/20182 ,  G06T2207/30004

    摘要： A system and method for asynchronous calibration of a solid-state detector are provided. A first offset is obtained with a first frame interval. A second offset image is obtained with a second frame interval that is shorter than the first frame interval. A third offset image is obtained with a third frame interval that is longer than the first frame interval. The first offset image is offset with each of the second offset image and the third offset image to produce offset comparison images. Pixels in the offset comparison images with an intensity value that exceeds an asynchronous threshold intensity value are identified as asynchronous bad pixels and added to a bad pixel map. Subsequently acquired x-ray images are offset with corresponding offset images. The bad pixel map is used to identify asynchronous bad pixels in the displayed images.

    摘要翻译： 提供了一种用于固态检测器的异步校准的系统和方法。 以第一帧间隔获得第一偏移。 以比第一帧间隔短的第二帧间隔获得第二偏移图像。 以比第一帧间隔长的第三帧间隔获得第三偏移图像。 第一偏移图像与第二偏移图像和第三偏移图像中的每一个偏移，以产生偏移比较图像。 具有超过异步阈值强度值的强度值的偏移比较图像中的像素被识别为异步不良像素并被添加到不良像素图。 随后获得的X射线图像用相应的偏移图像偏移。 坏像素图用于识别显示图像中的异步不良像素。

    Method for identifying and correcting pixels with excess pixel lag in a solid state x-ray detector
    2.
    发明授权
    Method for identifying and correcting pixels with excess pixel lag in a solid state x-ray detector 失效
    用于在固态X射线检测器中识别和校正具有多余像素滞后的像素的方法

    公开(公告)号：US06404853B1

    公开(公告)日：2002-06-11

    申请号：US09682961

    申请日：2001-11-02

    申请人： Jibril Odogba ,  Kenneth Scott Kump ,  John Moore Boudry

    发明人： Jibril Odogba ,  Kenneth Scott Kump ,  John Moore Boudry

    IPC分类号： H05G164

    CPC分类号： A61B6/585 ,  A61B6/00 ,  A61B6/482 ,  H04N5/32 ,  H04N5/367

    摘要： A method is provided to identify pixels in a digital x-ray detector that experience an amount of residual charge that is sufficient to cause an image artifact. A lag artifact threshold is obtained. The lag artifact threshold identifies an amount of residual charge that, when held by the pixels in the digital x-ray detector, will cause image artifacts. A pixel lag experienced by a pixel is determined. The pixel lag may be different for each pixel. Pixels that have a pixel lag exceeding the lag artifact threshold are identified and corrected.

    摘要翻译： 提供了一种方法来识别数字X射线检测器中经历足以引起图像伪像的剩余电荷量的像素。 获得滞后伪像阈值。 滞后伪影阈值识别当由数字X射线检测器中的像素保持时将导致图像伪像的剩余电荷量。 确定像素经历的像素滞后。 每个像素的像素滞后可能不同。 识别并校正具有超过滞后伪影阈值的像素滞后的像素。

    Low-dose exposure aided positioning (LEAP) for digital radiography
    6.
    发明授权
    Low-dose exposure aided positioning (LEAP) for digital radiography 有权
    低剂量曝光辅助定位（LEAP）用于数字射线照相

    公开(公告)号：US06827489B2

    公开(公告)日：2004-12-07

    申请号：US10003490

    申请日：2001-11-01

    申请人： Francois Serge Nicolas ,  Vincent S. Polkus ,  Kenneth Scott Kump ,  Remy Andre Klausz

    发明人： Francois Serge Nicolas ,  Vincent S. Polkus ,  Kenneth Scott Kump ,  Remy Andre Klausz

    IPC分类号： A61B608

    CPC分类号： A61B6/08 ,  A61B6/0457 ,  A61B6/482 ,  A61B6/488 ,  A61B6/544 ,  A61B6/548

    摘要： A system and method for improved imaging of a patient through the use of low-dose exposure aided positioning is provided. The patient is positioned in the X-ray system and them imaged with a low-dose pre-shot to verify the positioning of the patient. If the patient's positioning is acceptable, the patient is then imaged with a full-dose X-ray exposure. If the patient's positioning is not acceptable, the patient is repositioned and re-imaged with a low-dose pre-shot until the patient's positioning is acceptable. The low-dose pre-shot may take the form of a low-dose X-ray imaging sequence. The present invention thus provides for rapid verification of the proper positioning of the patient in the X-ray system in order to provide for optimal X-ray image quality. Additionally, the X-ray imaging system thus minimizes the additional exposure to X-ray radiation on the part of the patient.

    摘要翻译： 提供了一种通过使用低剂量曝光辅助定位来改善患者成像的系统和方法。 将患者定位在X射线系统中，并以低剂量预注射成像，以验证患者的位置。 如果患者的定位是可接受的，则用全剂量X射线曝光对患者进行成像。 如果患者的定位不可接受，则患者将重新定位并以低剂量预注射重新成像，直到患者的定位可接受为止。 低剂量预注射可以采取低剂量X射线成像序列的形式。 因此，本发明提供了快速验证患者在X射线系统中的适当定位，以便提供最佳的X射线图像质量。 此外，X射线成像系统因此使对患者部分的X射线辐射的附加暴露最小化。

    SYSTEM AND METHOD OF ELIMINATING IMAGE ARTIFACTS
    9.
    发明申请
    SYSTEM AND METHOD OF ELIMINATING IMAGE ARTIFACTS 有权
    消除影像艺术的系统和方法

    公开(公告)号：US20110139993A1

    公开(公告)日：2011-06-16

    申请号：US12637069

    申请日：2009-12-14

    申请人： James Zhengshe Liu ,  Feng Gao ,  Kenneth Scott Kump

    发明人： James Zhengshe Liu ,  Feng Gao ,  Kenneth Scott Kump

    IPC分类号： G01T1/24

    CPC分类号： H04N5/32 ,  A61B6/508 ,  A61B6/5258 ,  H04N5/3577

    摘要： A system and method for eliminating image artifacts caused by electromagnetic interference (EMI) on a digital x-ray detector. The system and method includes a digital x-ray detector panel having an array of pixels in rows and columns, with a plurality of data lines coupled to the columns of pixels and a plurality of scan lines coupled to the rows of pixels. The system and method uses certain photodiodes in a row of the pixel array for measuring EMI with corresponding scan line and FETs deactivated and eliminating the EMI and image artifacts with the remaining photodiodes in the row with corresponding scan line and FETs activated.

    摘要翻译： 一种用于消除由数字X射线检测器上的电磁干扰（EMI）引起的图像伪影的系统和方法。 该系统和方法包括数字X射线检测器面板，其具有行和列中的像素阵列，多个数据线耦合到像素列，以及耦合到像素行的多条扫描线。 该系统和方法使用像素阵列的一行中的某些光电二极管来测量具有相应扫描线的EMI，并且FET被去激活，并且消除了具有相应扫描线和FET的行中剩余的光电二极管的EMI和图像伪影。