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    X-ray examination apparatus including an x-ray filter
    1.
    发明授权
    X-ray examination apparatus including an x-ray filter 失效
    包括X射线滤光片的X射线检查装置

    公开(公告)号：US6061426A

    公开(公告)日：2000-05-09

    申请号：US166432

    申请日：1998-10-05

    申请人： Petrus W. J. Linders ,  Herman Stegehuis ,  Wilhelmus J. J. Welters ,  Nicolaas P. Willard ,  Lambertus G. J. Fokkink

    发明人： Petrus W. J. Linders ,  Herman Stegehuis ,  Wilhelmus J. J. Welters ,  Nicolaas P. Willard ,  Lambertus G. J. Fokkink

    IPC分类号： G21K5/02 ,  G21K1/00 ,  G21K1/02 ,  G21K1/10

    CPC分类号： G21K1/10

    摘要： An X-ray examination apparatus includes an X-ray source (1) for emitting X-rays. An object to be radiologically examined is arranged in an examination space. An X-ray detector (2) derives an image signal, for example an electronic video signal, from an X-ray image of the object. An X-ray filter locally attenuates the X-rays partly. The X-ray filter is arranged between the X-ray source and the X-ray detector and the X-ray filter is provided with filter elements whose X-ray absorptivity can be adjusted on the basis of an amount of X-ray absorbing liquid present within the individual filter elements.The X-ray examination apparatus includes an X-ray collimator for locally intercepting the X-rays. The X-ray collimator is arranged between the X-ray source and the examination space and is provided with collimator elements which can be switched between an X-ray transmitting state and an X-ray intercepting state. Individual collimator elements are filled with an X-ray intercepting liquid in the X-ray intercepting state.The amount of X-ray absorbing liquid present in the filter elements is controlled by application of an electric voltage to the relevant filter elements. The collimator elements are switched between the X-ray intercepting state and the X-ray transmitting state by means of an electric voltage which is applied to the relevant collimator elements.

    摘要翻译： X射线检查装置包括用于发射X射线的X射线源（1）。 将放射学检查的对象布置在检查空间中。 X射线检测器（2）从对象的X射线图像导出图像信号，例如电子视频信号。 X射线滤波器部分地局部衰减X射线。 X射线滤光器配置在X射线源和X射线检测器之间，X射线滤光片设置有可以根据X射线吸收液量的X射线吸收率进行调整的滤光元件 存在于各个过滤元件内。 X射线检查装置包括用于局部截断X射线的X射线准直器。 X射线准直仪设置在X射线源和检查空间之间，并且设置有能够在X射线透射状态和X射线截取状态之间切换的准直元件。 单个准直器元件在X射线拦截状态下被X射线拦截液体填充。 通过向相关的过滤元件施加电压来控制存在于过滤元件中的X射线吸收液体的量。 准直器元件通过施加到相关准直器元件的电压在X射线拦截状态和X射线透射状态之间切换。

    X-ray apparatus comprising a filter
    2.
    发明授权
    X-ray apparatus comprising a filter 失效
    包括过滤器的X射线设备

    公开(公告)号：US5625665A

    公开(公告)日：1997-04-29

    申请号：US546027

    申请日：1995-10-20

    申请人： Lambertus G. J. Fokkink ,  Petrus W. J. Linders ,  Johanna A. M. Sondag-Huet-Horst ,  Andre R. De Wit ,  Rudolf Kemner ,  Frans J. A. Berkers

    发明人： Lambertus G. J. Fokkink ,  Petrus W. J. Linders ,  Johanna A. M. Sondag-Huet-Horst ,  Andre R. De Wit ,  Rudolf Kemner ,  Frans J. A. Berkers

    IPC分类号： G21K3/00 ,  A61B6/00 ,  G21K1/10

    CPC分类号： G21K1/10

    摘要： An X-ray apparatus is provided with a filter (12) for limiting the dynamic range of an X-ray image formed on an X-ray detector (4) by exposure of an object (3), for example a patient to be examined, to X-rays (2). The filter (12) has filter elements (13) including one or more capillary tubes (13), one end of which communicates with a reservoir with an X-ray absorbing liquid. The adhesion of the X-ray absorbing liquid to the inner side of the capillary tubes can be adjusted by means of an electric voltage applied to an electrically conductive layer provided on the inner side of the capillary tubes (13). The degree of filling of the capillary tubes (13) with the X-ray absorbing liquid is adjusted by way of the electric voltage value. The X-ray absorption profile is adjusted within a very short period of time, for example within one second, by adjustment of the electric voltages applied to the capillary tubes (13).

    摘要翻译： X射线装置设置有用于通过物体（3）例如待检查的患者的暴露来限制形成在X射线检测器（4）上的X射线图像的动态范围的滤光器（12） ，到X射线（2）。 过滤器（12）具有包括一个或多个毛细管（13）的过滤元件（13），其一端与储存器与X射线吸收液体连通。 可以通过施加到设置在毛细管（13）的内侧上的导电层的电压来调节X射线吸收液体到毛细管内侧的粘附。 通过电压值调节毛细管（13）与X射线吸收液的填充程度。 通过调整施加到毛细管（13）上的电压，在非常短的时间段（例如1秒钟内）调整X射线吸收曲线。

    X-ray examination apparatus comprising a filter
    4.
    发明授权
    X-ray examination apparatus comprising a filter 失效
    包括过滤器的X射线检查装置

    公开(公告)号：US06188749B1

    公开(公告)日：2001-02-13

    申请号：US09236239

    申请日：1999-01-22

    申请人： Christoph Schiller ,  Mark A. De Samber ,  Lambertus G. J. Fokkink

    发明人： Christoph Schiller ,  Mark A. De Samber ,  Lambertus G. J. Fokkink

    IPC分类号： G21K300

    CPC分类号： G21K1/10

    摘要： An X-ray examination apparatus (1), including an X-ray source (2) and an X-ray detector (5), is provided with an X-ray filter (6) which is arranged between the X-ray source and the X-ray detector. The X-ray filter (6) includes a plurality of filter elements (7) whose X-ray absorptivity can be adjusted by adjustment of a quantity of X-ray absorbing liquid (14) within the individual filter elements; a first end of individual filter elements communicates with the X-ray absorbing liquid whereas a second end communicates with an X-ray transparent liquid (12). The X-ray filter is preferably provided with a pressure control system for independent control of the liquid pressure in individual row ducts (11) and individual column ducts (13). Individual filter elements are preferably provided with a piston for separating the X-ray absorbing liquid from the X-ray transparent liquid.

    摘要翻译： 包括X射线源（2）和X射线检测器（5）的X射线检查装置（1）设置有X射线滤光器（6），其设置在X射线源和 X光检测器。 X射线过滤器（6）包括多个过滤器元件（7），其可以通过调节各个过滤元件内的X射线吸收液体（14）的量来调节其X射线吸收率; 单个过滤元件的第一端与X射线吸收液体连通，而第二端与X射线透明液体（12）连通。 优选地，X射线滤波器设置有用于独立控制各个行管道（11）和各个柱管道（13）中的液体压力的压力控制系统。 单独的过滤元件优选地设置有用于将X射线吸收液体与X射线透明液体分离的活塞。