RADIATION DETECTOR WITH MULTIPLE ELECTRODES ON A SENSITIVE LAYER
    1.
    发明申请
    RADIATION DETECTOR WITH MULTIPLE ELECTRODES ON A SENSITIVE LAYER 有权
    辐射探测器与敏感层上的多个电极

    公开(公告)号:US20100187429A1

    公开(公告)日:2010-07-29

    申请号:US12514595

    申请日:2007-11-12

    IPC分类号: G01T1/24

    CPC分类号: G01T1/2928

    摘要: The invention relates to a radiation detector (200), particularly an X-ray detector, which comprises at least one sensitive layer (212) for the conversion of incident photons (X) into electrical signals. A two-dimensional array of electrodes (213) is located on the front side of the sensitive layer (212), while its back side carries a counter-electrode (211). The size of the electrodes (213) may vary in radiation direction (y) for adapting the counting workload of the electrodes. Moreover, the position of the electrodes (213) with respect to the radiation direction (y) provides information about the energy of the detected photons (X).

    摘要翻译: 本发明涉及一种辐射探测器(200),特别是一种X射线检测器,其包括用于将入射光子(X)转换成电信号的至少一个敏感层(212)。 电极(213)的二维阵列位于敏感层(212)的前侧,而其背面承载对电极(211)。 电极(213)的尺寸可以在辐射方向(y)上变化,以适应电极的计数工作量。 此外,电极(213)相对于辐射方向(y)的位置提供关于检测到的光子(X)的能量的信息。

    Systems and Methods Using X-Ray Tube Spectra For Computed Tomography Applications
    2.
    发明申请
    Systems and Methods Using X-Ray Tube Spectra For Computed Tomography Applications 审中-公开
    系统和方法使用X射线管光谱计算机断层扫描应用

    公开(公告)号:US20080279328A1

    公开(公告)日:2008-11-13

    申请号:US12093186

    申请日:2006-11-14

    IPC分类号: A61B6/00

    摘要: Computed tomography (CT) systems are provided that utilize x-ray tube spectra in connection with the generation and/or interpretation of CT data. The disclosed systems and methods use x-ray tube spectra associated with CT systems to enhance contrast and/or image quality, e.g., by making use of energy selective detection techniques. The x-ray spectra may be determined in a variety of ways, e.g., incorporation of a spectral x-ray tube model into the CT system, using the output of Monte-Carlo simulations, and/or processing measured experimental spectral tube data for the CT system. The x-ray tube spectra is generally generated by and/or stored in a computer system associated with the CT system and may be used in support of an energy selective detective method and/or generation of spectral CT images.

    摘要翻译: 提供计算机断层扫描(CT)系统,其利用与CT数据的生成和/或解释有关的X射线管光谱。 所公开的系统和方法使用与CT系统相关联的x射线管光谱来增强对比度和/或图像质量,例如通过利用能量选择性检测技术。 x射线光谱可以以各种方式确定,例如,使用蒙特卡罗模拟的输出将光谱X射线管模型并入CT系统,和/或处理测量的实验光谱管数据 CT系统。 X射线管光谱通常由与CT系统相关联的计算机系统中生成和/或存储,并可用于支持能量选择性检测方法和/或产生光谱CT图像。

    Photon counting detector
    3.
    发明授权
    Photon counting detector 有权
    光子计数检测器

    公开(公告)号:US09423515B2

    公开(公告)日:2016-08-23

    申请号:US14237916

    申请日:2012-08-16

    IPC分类号: G01T1/24

    CPC分类号: G01T1/24 G01T1/241 G01T1/247

    摘要: A detector array includes at least one direct conversion detector pixel (114-114M) configured to detect photons of poly-chromatic ionizing radiation. The pixel includes a cathode layer (116), an anode layer (118) including an anode electrode (118-118 M ) for each of the at least one detector pixels, a direct conversion material (120), disposed between the cathode layer and the anode layer, and a gate electrode disposed in the direct conversion material, parallelto and between the cathode and anode layers.

    摘要翻译: 检测器阵列包括被配置为检测多色电离辐射的光子的至少一个直接转换检测器像素(114-114M)。 所述像素包括阴极层(116),包括用于所述至少一个检测器像素中的每一个的阳极电极(118-118M)的阳极层(118);直接转换材料(120),设置在所述阴极层和 阳极层和设置在直接转换材料中的栅极,平行于阴极和阳极层之间。

    Imaging apparatus
    4.
    发明授权
    Imaging apparatus 有权
    成像设备

    公开(公告)号:US09177397B2

    公开(公告)日:2015-11-03

    申请号:US14125149

    申请日:2012-06-07

    摘要: The invention relates to an imaging apparatus (31) for imaging an object. A reconstruction unit (12) determines component projection data values, which correspond to, for example, a base material of the object, and reconstructs an image of the object based on the determined component projection data values. A component projection data value, which corresponds to a ray, is determined as a combination of weighted base functions, which depend on energy projection data values of the same ray and the orientation of the same ray. This allows considering a possible dependency of the corresponding decomposition on the orientation of the ray, thereby allowing the imaging apparatus to improve the quality of decomposing the provided energy projection data values into the component projection data values and thus of a finally reconstructed image of the object, which is reconstructed based on the component projection data values.

    摘要翻译: 本发明涉及一种用于对物体成像的成像装置(31)。 重建单元(12)确定与例如对象的基础材料相对应的分量投影数据值,并且基于所确定的分量投影数据值来重构对象的图像。 对应于射线的分量投影数据值被确定为加权基函数的组合,其依赖于相同射线的能量投影数据值和相同射线的取向。 这允许考虑相应分解对于射线取向的可能依赖性,从而允许成像装置提高将所提供的能量投影数据值分解成分量投影数据值并因此提高对象的最终重建图像的质量 ,其基于分量投影数据值被重建。

    SPECTRAL CT
    5.
    发明申请
    SPECTRAL CT 有权
    光谱CT

    公开(公告)号:US20110096892A1

    公开(公告)日:2011-04-28

    申请号:US12996985

    申请日:2009-06-01

    IPC分类号: H05G1/60

    摘要: An imaging system includes a radiation source (106, T1, T2, T3) that rotates about an examination region and emits radiation that traverses the examination region. The radiation source (106, T1, T2, T3) emits radiation having an energy spectrum that is selectively alternately switched between at least two different energy spectra during an imaging procedure. The system further includes an energy-resolving detector array (116, D1, D2, D3) that detects radiation traversing the examination region. The energy-resolving detector array (116, D1, D2, D3) resolves the detected radiation over at least two different energy ranges and produces energy-resolved output signals as a function of both emission energy spectrum and energy range. The system further includes a reconstructor (126) that performs a spectral reconstruction of the energy-resolved output signals. In another embodiment, the detector array (116) includes a photon-counting detector array (116).

    摘要翻译: 成像系统包括围绕检查区域旋转并且发射穿过检查区域的辐射的辐射源(106,T1,T2,T3)。 辐射源(106,T1,T2,T3)发射具有在成像过程期间在至少两个不同能量谱之间选择性交替切换的能谱的辐射。 该系统还包括检测穿过检查区域的辐射的能量分辨检测器阵列(116,D1,D2,D3)。 能量分辨检测器阵列(116,D1,D2,D3)通过至少两个不同的能量范围来解析检测到的辐射,并且产生作为发射能量谱和能量范围的函数的能量分辨的输出信号。 该系统还包括执行能量分辨输出信号的频谱重建的重建器(126)。 在另一个实施例中,检测器阵列(116)包括光子计数检测器阵列(116)。

    Computed tomography apparatus
    6.
    发明授权
    Computed tomography apparatus 有权
    计算机断层摄影仪

    公开(公告)号:US08861674B2

    公开(公告)日:2014-10-14

    申请号:US13509840

    申请日:2010-12-10

    摘要: The invention relates to a computed tomography apparatus for imaging an object. The computed tomography apparatus comprises a radiation source (2) for generating modulated radiation (4) traversing the object and a detector (6) for generating detection values depending on the radiation (4) after having traversed the object, while the radiation source (2) and the object are moved relative to each other. A weight providing unit (14) provides modulation weights for weighting the detection values depending on the modulation of the radiation (4) and a reconstruction unit (15) reconstructs an image of the object, wherein the detection values are weighted based on the provided modulation weights and an image of the object is reconstructed from the weighted detection values. This can allow to optimize the dose application to the object by modulating the radiation accordingly, wherein the reconstructed images still have a high quality.

    摘要翻译: 本发明涉及一种用于对物体成像的计算机断层摄影装置。 计算机断层摄影装置包括用于产生经过物体的调制辐射(4)的辐射源(2)和用于在穿过物体之后产生取决于辐射(4)的检测值的检测器(6),而辐射源 )并且对象相对于彼此移动。 权重提供单元(14)根据辐射(4)的调制提供用于对检测值进行加权的调制权重,并且重建单元(15)重建对象的图像,其中基于所提供的调制对所述检测值进行加权 从加权检测值重建对象的权重和图像。 这可以通过相应地调节辐射来优化对物体的剂量应用,其中重建的图像仍然具有高质量。

    LIKELIHOOD-BASED SPECTRAL DATA PROJECTION DOMAIN DE-NOISING
    7.
    发明申请
    LIKELIHOOD-BASED SPECTRAL DATA PROJECTION DOMAIN DE-NOISING 审中-公开
    基于LIKELIHOOD的光谱数据投影域名消除

    公开(公告)号:US20140005971A1

    公开(公告)日:2014-01-02

    申请号:US14005041

    申请日:2012-03-02

    IPC分类号: G01T7/00

    摘要: A method for processing projection data in the projection domain includes receiving the projection data. The projection data is generated by a spectral detector and includes two or more independent energy-resolved measurements in which at least one of the two or more measurements has first photon statistics. The method further includes generating a de-noised measurement in electronic format for the at least one of the two or more measurements having the first photon statistics. The de-noised measurement has second photon statistics which are better than the first photon statistics.

    摘要翻译: 用于处理投影域中的投影数据的方法包括接收投影数据。 投影数据由光谱检测器产生,并且包括两个或多个独立的能量分辨测量,其中两个或更多个测量中的至少一个具有第一光子统计。 该方法还包括以电子格式生成具有第一光子统计量的两个或多个测量中的至少一个的去噪测量。 去噪测量具有比第一光子统计更好的第二光子统计。

    COMPUTED TOMOGRAPHY APPARATUS
    8.
    发明申请
    COMPUTED TOMOGRAPHY APPARATUS 有权
    计算机摄影装置

    公开(公告)号:US20120250821A1

    公开(公告)日:2012-10-04

    申请号:US13509840

    申请日:2010-12-10

    IPC分类号: G01N23/04

    摘要: The invention relates to a computed tomography apparatus for imaging an object. The computed tomography apparatus comprises a radiation source (2) for generating modulated radiation (4) traversing the object and a detector (6) for generating detection values depending on the radiation (4) after having traversed the object, while the radiation source (2) and the object are moved relative to each other. A weight providing unit (14) provides modulation weights for weighting the detection values depending on the modulation of the radiation (4) and a reconstruction unit (15) reconstructs an image of the object, wherein the detection values are weighted based on the provided modulation weights and an image of the object is reconstructed from the weighted detection values. This can allow to optimize the dose application to the object by modulating the radiation accordingly, wherein the reconstructed images still have a high quality.

    摘要翻译: 本发明涉及一种用于对物体成像的计算机断层摄影装置。 计算机断层摄影装置包括用于产生经过物体的调制辐射(4)的辐射源(2)和用于在穿过物体之后产生取决于辐射(4)的检测值的检测器(6),而辐射源 )并且对象相对于彼此移动。 权重提供单元(14)根据辐射(4)的调制提供用于对检测值进行加权的调制权重,并且重建单元(15)重建对象的图像,其中基于所提供的调制对所述检测值进行加权 从加权检测值重建对象的权重和图像。 这可以通过相应地调节辐射来优化对物体的剂量应用,其中重建的图像仍然具有高质量。