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    • 4. 发明申请
    • Method for conducting a test measurement in a CT apparatus, and CT apparatus
    • 在CT装置中进行测试测量的方法和CT装置
    • US20050002495A1
    • 2005-01-06
    • US10856365
    • 2004-05-28
    • Peter HeinHelmut KropfeldMario Reinwand
    • Peter HeinHelmut KropfeldMario Reinwand
    • A61B6/00G01N23/04G21K1/12G01D18/00G01N23/00H05G1/60
    • A61B6/583G01N23/046G01N2223/419
    • In an x-ray computed tomography apparatus and a method for conducting test measurements therein, a combined phantom is employed that is formed of several individual phantoms, each forming a segment of the combined phantom, and the combined phantom is affixed to a platform of the computed tomography apparatus that is movable with respect to an x-ray data acquisition unit of the computed tomography apparatus. The platform is moved into a first position and a first x-ray absorption distribution of a first segment of the combined phantom is obtained, and the platform is moved into a second position and a second x-ray absorption distribution is obtained of a second segment of the phantom. Movement of the platform and operation of the data acquisition unit for obtaining the first and second x-ray distributions are automatically controlled by a computer program.
    • 在X射线计算机断层摄影装置及其中进行测试测量的方法中,使用由几个单独的幻影形成的组合体模,每个体模形成组合体模的一部分,并且将组合的体模固定到 计算机断层摄影装置,其相对于所述计算机断层摄影装置的x射线数据获取单元可移动。 将平台移动到第一位置,并且获得组合体模的第一段的第一x射线吸收分布,并且平台被移动到第二位置,并且获得第二段的第二X射线吸收分布 的幻影。 用于获得第一和第二X射线分布的平台的运动和数据获取单元的操作由计算机程序自动控制。
    • 5. 发明授权
    • Shadow mask for an X-ray detector, computed tomography unit having a shadow mask, and a method for adjusting a shadow mask
    • 用于X射线检测器的阴影掩模,具有荫罩的计算机断层摄影单元和用于调整荫罩的方法
    • US07476025B2
    • 2009-01-13
    • US11365583
    • 2006-03-02
    • Claus PohanMario ReinwandKarl Stierstorfer
    • Claus PohanMario ReinwandKarl Stierstorfer
    • A61B6/08
    • A61B6/06A61B6/032G01T1/295G21K1/02
    • A shadow mask and method for adjustment are disclosed. The shadow mask may be for an X-ray detector including detector elements, which may further be provided for a computed tomography unit, for example. The shadow mask has a mask plate with holes of which each is assigned a detector element. At least one adjusting hole of the mask plate includes enlarged dimensions in such a way that it is adapted to the dimensions of at least two detector elements. The adjusting hole serves for the method of adjusting the shadow mask over the X-ray detector. Measurement signals of the detector elements that are assigned to the at least one adjusting hole, are determined by using X-radiation. The shadow mask and the X-ray detector are adjusted relative to one another on the basis of a comparison of the measurement signals of the detector elements.
    • 公开了一种荫罩和调节方法。 阴影掩模可以用于包括检测器元件的X射线检测器,其可以进一步提供用于计算机断层摄影单元。 荫罩具有一个具有孔的掩模板,每个孔分配有检测器元件。 掩模板的至少一个调节孔包括扩大的尺寸,使其适于至少两个检测器元件的尺寸。 调整孔用于调整X射线检测器上的荫罩的方法。 通过使用X射线来确定分配给至少一个调整孔的检测器元件的测量信号。 基于检测器元件的测量信号的比较,荫罩和X射线检测器相对于彼此调节。
    • 6. 发明授权
    • Method for conducting a test measurement in a CT apparatus, and CT apparatus
    • 在CT装置中进行测试测量的方法和CT装置
    • US07010082B2
    • 2006-03-07
    • US10856365
    • 2004-05-28
    • Peter HeinHelmut KropfeldMario Reinwand
    • Peter HeinHelmut KropfeldMario Reinwand
    • A61B6/00
    • A61B6/583G01N23/046G01N2223/419
    • In an x-ray computed tomography apparatus and a method for conducting test measurements therein, a combined phantom is employed that is formed of several individual phantoms, each forming a segment of the combined phantom, and the combined phantom is affixed to a platform of the computed tomography apparatus that is movable with respect to an x-ray data acquisition unit of the computed tomography apparatus. The platform is moved into a first position and a first x-ray absorption distribution of a first segment of the combined phantom is obtained, and the platform is moved into a second position and a second x-ray absorption distribution is obtained of a second segment of the phantom. Movement of the platform and operation of the data acquisition unit for obtaining the first and second x-ray distributions are automatically controlled by a computer program.
    • 在X射线计算机断层摄影装置及其中进行测试测量的方法中,使用由几个单独的幻影形成的组合体模,每个体模形成组合体模的一部分,并且将组合的体模固定到 计算机断层摄影装置,其相对于所述计算机断层摄影装置的x射线数据获取单元可移动。 将平台移动到第一位置,并且获得组合体模的第一段的第一x射线吸收分布,并且平台被移动到第二位置,并且获得第二段的第二X射线吸收分布 的幻影。 用于获得第一和第二X射线分布的平台的运动和数据获取单元的操作由计算机程序自动控制。
    • 7. 发明授权
    • X-ray computed tomography apparatus
    • X射线计算机断层摄影装置
    • US06430252B2
    • 2002-08-06
    • US09912137
    • 2001-07-25
    • Mario ReinwandKarl Stierstorfer
    • Mario ReinwandKarl Stierstorfer
    • A61B603
    • A61B6/583A61B6/032Y10S378/901
    • In an X-ray computed tomography apparatus with retrospective beam hardening correction, an overall image of a body slice under examination is determined from overall attenuation values that are obtained from the body slice. At least one partial image that shows essentially only one body substance, such as bone substance, is extracted from this overall image. Attenuation partial values are employed for determining a correction value. The attenuation values are determined for each overall attenuation value from the at least one partial image by re-projection. A correction value is derived from the beam hardening error that is determined for a material combination of two different reference materials.
    • 在具有追溯光束硬化校正的X射线计算机断层摄影装置中,根据从身体切片获得的总体衰减值来确定正在检查的身体切片的整体图像。 从该整体图像中提取至少一个仅显示一种身体物质(例如骨骼物质)的部分图像。 衰减部分值用于确定校正值。 通过重新投影来确定来自至少一个部分图像的每个总体衰减值的衰减值。 根据两种不同参考材料的材料组合确定的光束硬化误差导出校正值。