X-ray detector for phase contrast imaging
    31.
    发明授权
    X-ray detector for phase contrast imaging 失效
    用于相位成像的X射线检测器

    公开(公告)号:US08576983B2

    公开(公告)日:2013-11-05

    申请号:US12866744

    申请日:2009-02-09

    IPC分类号: G01N23/04

    摘要: The invention relates to an X-ray detector (30) that comprises an array of sensitive elements (Pi−1,b, Pia, Pib, Pi+1,a, Pi+1,b) and at least two analyzer gratings (G2a, G2b) disposed with different phase and/or periodicity in front of two different sensitive elements. Preferably, the sensitive elements are organized in macro-pixels (IIi) of e.g. four adjacent sensitive elements, where analyzer gratings with mutually different phases are disposed in front said sensitive elements. The detector (30) can particularly be applied in an X-ray device (100) for generating phase contrast images because it allows to sample an intensity pattern (I) generated by such a device simultaneously at different positions.

    摘要翻译: 本发明涉及一种X射线检测器(30),它包括一组敏感元件(Pi-1,b,Pia,Pib,Pi + 1,a,Pi + 1,b)和至少两个分析器光栅 ,G2b),其在两个不同的敏感元件前面具有不同的相位和/或周期性。 优选地,敏感元件被组织在例如微处理器的宏像素(IIi)中。 四个相邻的敏感元件,其中具有相互不同相位的分析器光栅设置在所述敏感元件的前面。 检测器(30)可以特别地应用于用于生成相位对比图像的X射线装置(100)中,因为它允许在不同位置同时采样由这种装置产生的强度图案(I)。

    X-RAY DETECTOR FOR PHASE CONTRAST IMAGING
    33.
    发明申请
    X-RAY DETECTOR FOR PHASE CONTRAST IMAGING 失效
    用于相位对比成像的X射线探测器

    公开(公告)号:US20100322380A1

    公开(公告)日:2010-12-23

    申请号:US12866744

    申请日:2009-02-09

    IPC分类号: G01N23/04 G01J1/00

    摘要: The invention relates to an X-ray detector (30) that comprises an array of sensitive elements (Pi−1,b, Pia, Pib, Pi+1,a, Pi+1,b) and at least two analyzer gratings (G2a, G2b) disposed with different phase and/or periodicity in front of two different sensitive elements. Preferably, the sensitive elements are organized in macro-pixels (IIi) of e.g. four adjacent sensitive elements, where analyzer gratings with mutually different phases are disposed in front said sensitive elements. The detector (30) can particularly be applied in an X-ray device (100) for generating phase contrast images because it allows to sample an intensity pattern (I) generated by such a device simultaneously at different positions.

    摘要翻译: 本发明涉及一种X射线检测器(30),它包括一组敏感元件(Pi-1,b,Pia,Pib,Pi + 1,a,Pi + 1,b)和至少两个分析器光栅 ,G2b),其在两个不同的敏感元件前面具有不同的相位和/或周期性。 优选地,敏感元件被组织在例如微处理器的宏像素(IIi)中。 四个相邻的敏感元件,其中具有相互不同相位的分析器光栅设置在所述敏感元件的前面。 检测器(30)可以特别地应用于用于生成相位对比图像的X射线装置(100)中,因为它允许在不同位置同时采样由这种装置产生的强度图案(I)。

    Spectral photon counting detector
    34.
    发明授权
    Spectral photon counting detector 有权
    光谱光子计数检测器

    公开(公告)号:US09335424B2

    公开(公告)日:2016-05-10

    申请号:US12665572

    申请日:2008-05-23

    IPC分类号: G01T1/17

    CPC分类号: G01T1/171

    摘要: An apparatus includes an integrator (120) that produces a pulse having a peak amplitude indicative of the energy of a detected photon. First discharging circuitry (136) discharges the integrator (120) at a first discharging speed, and second discharging circuitry (124) discharges the integrator (120) at a second discharging speed. The first discharging speed is less than the second discharging speed.

    摘要翻译: 一种装置包括产生具有指示被检测光子的能量的峰值振幅的脉冲的积分器(120)。 第一放电电路(136)以第一放电速度放电积分器(120),第二放电电路(124)以第二放电速度放电积分器(120)。 第一放电速度小于第二放电速度。

    Apparatus, imaging device and method for detecting X-ray radiation
    35.
    发明授权
    Apparatus, imaging device and method for detecting X-ray radiation 有权
    用于检测X射线辐射的装置,成像装置和方法

    公开(公告)号:US08618471B2

    公开(公告)日:2013-12-31

    申请号:US12446758

    申请日:2007-10-22

    IPC分类号: G12B13/00 G01J1/42

    CPC分类号: G01T1/17

    摘要: The invention is directed at an apparatus (10), an imaging device and a method for detecting X-ray photons, in particular photons (32,34) in a computer tomograph. Photons (32,34) are converted into an electrical pulse and compared against a threshold using a discriminator (20). The electrical network (12) performing these functions comprises a switching element (28), that can modify the electrical path (22) along which the process signals travel. The trigger signal (VT) for actuating the switching element (28) is derived from an electrical state of the electrical path (22). If a pulse associated to a photon (32,34) is detected, the switching element (28) is actuated in order to avoid that the processing of the charge pulse stemming from a first photon (32) is affected by a subsequent second photon (34).

    摘要翻译: 本发明涉及一种用于检测计算机断层摄影机中的X射线光子,特别是光子(32,34)的成像装置和方法的装置(10)。 光子(32,34)被转换成电脉冲,并使用鉴别器(20)与阈值进行比较。 执行这些功能的电网(12)包括开关元件(28),其可以修改过程信号沿其移动的电路径(22)。 用于致动开关元件(28)的触发信号(VT)源于电路径(22)的电状态。 如果检测到与光子(32,34)相关联的脉冲,则开关元件(28)被致动以避免由第一光子(32)产生的电荷脉冲的处理受随后的第二光子( 34)。

    Systems and Methods Using X-Ray Tube Spectra For Computed Tomography Applications
    36.
    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。

    SPECTRAL IMAGING
    37.
    发明申请
    SPECTRAL IMAGING 有权
    光谱成像

    公开(公告)号:US20120032085A1

    公开(公告)日:2012-02-09

    申请号:US13263851

    申请日:2010-03-15

    IPC分类号: G01T1/20

    CPC分类号: G01T1/1647 G01T1/2985

    摘要: An imaging system includes a scintillator array (202) and a digital photomultiplier array (204). A photon counting channel (212), an integrating channel (210), and a moment generating channel (214) process the output signal of the digital photomultiplier array (204). A reconstructor (122) spectrally resolves the first, the second and the third output signals. In one embodiment, a controller (232) activates the photon counting channel (212) to process the digital signal only if a radiation flux is below a predetermined threshold. An imaging system includes at least one direct conversion layer (302) and at least two scintillator layers (304) and corresponding photosensors (306). A photon counting channel (212) processes an output of the at least one direct conversion layer (302), and an integrating channel (210) and a moment generating channel (214) process respective outputs of the photosensors (306). A reconstructor (122) spectrally resolves the first, the second and the third output signals.

    摘要翻译: 成像系统包括闪烁体阵列(202)和数字光电倍增管阵列(204)。 光子计数通道(212),积分通道(210)和力矩产生通道(214)处理数字光电倍增管阵列(204)的输出信号。 重建器(122)对第一,第二和第三输出信号进行光谱解析。 在一个实施例中,仅当辐射通量低于预定阈值时,控制器(232)激活光子计数通道(212)才能处理数字信号。 成像系统包括至少一个直接转换层(302)和至少两个闪烁体层(304)和对应的光电传感器(306)。 光子计数通道(212)处理至少一个直接转换层(302)的输出,并且积分通道(210)和力矩产生通道(214)处理光电传感器(306)的相应输出。 重建器(122)对第一,第二和第三输出信号进行光谱解析。

    SPECTRAL PHOTON COUNTING DETECTOR
    38.
    发明申请
    SPECTRAL PHOTON COUNTING DETECTOR 有权
    光谱计数检测器

    公开(公告)号:US20100187432A1

    公开(公告)日:2010-07-29

    申请号:US12665572

    申请日:2008-05-23

    IPC分类号: G01T1/17 G01T1/161

    CPC分类号: G01T1/171

    摘要: An apparatus includes an integrator (120) that produces a pulse having a peak amplitude indicative of the energy of a detected photon. First discharging circuitry (136) discharges the integrator (120) at a first discharging speed, and second discharging circuitry (124) discharges the integrator (120) at a second discharging speed. The first discharging speed is less than the second discharging speed.

    摘要翻译: 一种装置包括产生具有指示被检测光子的能量的峰值振幅的脉冲的积分器(120)。 第一放电电路(136)以第一放电速度放电积分器(120),第二放电电路(124)以第二放电速度放电积分器(120)。 第一放电速度小于第二放电速度。

    APPARATUS, IMAGING DEVICE AND METHOD FOR DETECTING X-RAY RADIATION
    39.
    发明申请
    APPARATUS, IMAGING DEVICE AND METHOD FOR DETECTING X-RAY RADIATION 有权
    装置,成像装置和用于检测X射线辐射的方法

    公开(公告)号:US20100086100A1

    公开(公告)日:2010-04-08

    申请号:US12446758

    申请日:2007-10-22

    IPC分类号: G01T1/17 G21K1/12

    CPC分类号: G01T1/17

    摘要: The invention is directed at an apparatus (10), an imaging device and a method for detecting X-ray photons, in particular photons (32, 34) in a computer tomograph. Photons (32, 34) are converted into an electrical pulse and compared against a threshold using a discriminator (20). The electrical network (12) performing these functions comprises a switching element (28), that can modify the electrical path (22) along which the process signals travel. The trigger signal (VT) for actuating the switching element (28) is derived from an electrical state of the electrical path (22). If a pulse associated to a photon (32, 34) is detected, the switching element (28) is actuated in order to avoid that the processing of the charge pulse stemming from a first photon (32) is affected by a subsequent second photon (34).

    摘要翻译: 本发明涉及一种用于在计算机断层摄影机中检测X射线光子,特别是光子(32,34)的装置(10),成像装置和方法。 光子(32,34)被转换成电脉冲,并使用鉴别器(20)与阈值进行比较。 执行这些功能的电网(12)包括开关元件(28),其可以修改过程信号沿其移动的电路径(22)。 用于致动开关元件(28)的触发信号(VT)源于电路径(22)的电状态。 如果检测到与光子(32,34)相关联的脉冲,则开关元件(28)被致动,以避免由第一光子(32)产生的电荷脉冲的处理受随后的第二光子( 34)。

    Multiframe X-ray detector for imaging system with distributed X-ray sources
    40.
    发明授权
    Multiframe X-ray detector for imaging system with distributed X-ray sources 有权
    用于具有分布式X射线源的成像系统的多帧X射线检测器

    公开(公告)号:US09121954B2

    公开(公告)日:2015-09-01

    申请号:US13583093

    申请日:2011-03-04

    IPC分类号: G01T1/24 G01T1/17 H04N5/32

    CPC分类号: G01T1/247 G01T1/17 H04N5/32

    摘要: Device and method for synchronously switching activating a first and second charge accumulation section (31, 32) for a duration of a first and second predetermined sub-frame and a first and second X-ray source until lapse of a predetermined time frame for each of the first and second charge accumulation section (31, 32) for the accumulation of a plurality of temporally distributed partial charges according to an origin of a respective one of the plurality of spatially distributed X-ray sources so as to establish a specific relation between the focal spot position and a rule for accumulating the respective partial measurements, e.g. temporally distributed partial charges, belonging to the same focal spot positions, and to keep the focal spot temperature low by only activating the focal spot for a limited time according to a sub-frame.

    摘要翻译: 用于在第一和第二预定子帧和第一和第二X射线源的持续时间内同步切换激活第一和第二电荷累积部分(31,32)的装置和方法,直到经过预定时间帧 第一和第二电荷累积部分,用于根据多个空间分布的X射线源中的相应一个的原点累积多个时间分布的部分电荷,以便建立所述多个时间分布的部分电荷之间的特定关系 焦点位置和用于累积各个部分测量的规则,例如 属于相同焦点位置的时间分布的部分电荷,并且通过仅根据子帧激活有限时间的焦点来将焦点温度保持在低温。