HIGH-RESOLUTION QUASI-STATIC SETUP FOR X-RAY IMAGING WITH DISTRIBUTED SOURCES
    51.
    发明申请
    HIGH-RESOLUTION QUASI-STATIC SETUP FOR X-RAY IMAGING WITH DISTRIBUTED SOURCES 有权
    用于分布式源的X射线成像的高分辨率静态设置

    公开(公告)号:US20110002441A1

    公开(公告)日:2011-01-06

    申请号:US12918092

    申请日:2009-02-19

    IPC分类号: A61B6/02

    摘要: A method for acquiring X-ray image data of an imaging volume is disclosed, the method using a detector and a distributed X-ray source structure having a plurality of single source elements, which are uniformly distributed with a common pitch to each other, the method comprises moving the distributed X-ray source structure and/or the detector with respect to the imaging volume, importantly, the maximum moving distance dmax of the distributed X-ray source structure during the acquisition of the X-ray image data is limited to the length lp of the pitch. Emitting of X-rays from the distributed X-ray source structure and generating a plurality of signals in response to the X-rays incident upon the detector are executed during the movement.

    摘要翻译: 公开了一种用于获取成像体积的X射线图像数据的方法,所述方法使用具有多个单个源元件的检测器和分布式X射线源结构,所述单个源元件以相同的间距均匀分布, 方法包括相对于成像体积移动分布式X射线源结构和/或检测器,重要的是,在X射线图像数据的获取期间分布式X射线源结构的最大移动距离dmax被限制为 音高的长度lp。 在移动期间执行从分布式X射线源结构发射X射线并响应入射到检测器上的X射线产生多个信号。

    Power supply for an X-ray generator system
    52.
    发明授权
    Power supply for an X-ray generator system 有权
    X射线发生器系统的电源

    公开(公告)号:US07852986B2

    公开(公告)日:2010-12-14

    申请号:US12438563

    申请日:2007-08-21

    IPC分类号: H05G1/32

    CPC分类号: H05G1/10

    摘要: A power supply for generating a high output voltage for supplying an X-ray generator system with at least one X-ray source (17), especially for computer tomography (CT) applications is disclosed, wherein the high output voltage comprises at least two different high output voltage levels (U1; U1±U2) which are fast switchable so that spectral CT measurements can be conducted with one conventional X-ray tube (17). Furthermore, an X-ray tube generator system comprising such a power supply and at least one X-ray tube (17), as well as a computer tomography (CT) apparatus comprising such a power supply is disclosed.

    摘要翻译: 公开了一种用于产生用于向X射线发生器系统提供至少一个X射线源(17),特别是用于计算机断层摄影(CT)应用的高输出电压的电源,其中高输出电压包括至少两种不同的 高输出电压电平(U1; U1±U2),其可快速切换,以便可以用一个常规X射线管(17)进行光谱CT测量。 此外,公开了包括这种电源和至少一个X射线管(17)的X射线管发生器系统,以及包括这种电源的计算机断层摄影(CT)装置。

    ANTI-SCATTER-GRID FOR A RADIATION DETECTOR
    53.
    发明申请
    ANTI-SCATTER-GRID FOR A RADIATION DETECTOR 失效
    用于辐射探测器的防散射网格

    公开(公告)号:US20090225938A1

    公开(公告)日:2009-09-10

    申请号:US11573358

    申请日:2005-08-08

    IPC分类号: G01N23/06

    摘要: The invention relates to an Anti-Scatter-Grid (ASG) with lamellae (2) that absorb incident radiation (1, 8) and that produce an electrical signal proportional to the amount of absorbed radiation. The lamellae (2) may particularly consist of a semiconductor material in which photons produce electron-hole pairs that can be detected with the help of electrodes (3, 4, 6) on the sidewalls of the lamellae (2). The amount of absorbed scattered (8) or primary (1) radiation may thus be determined in a spatially resolved way, allowing to correct the image generated by an array (5) of sensor units (9).

    摘要翻译: 本发明涉及具有吸收入射辐射(1,8)并且产生与吸收辐射量成比例的电信号的薄片(2)的抗散射网格(ASG)。 薄片(2)可以特别地由半导体材料组成,其中光子产生电子 - 空穴对,借助于薄片(2)的侧壁上的电极(3,4,6)可以检测。 因此,可以以空间分辨的方式确定吸收的散射(8)或初级(1)辐射的量,从而允许校正由传感器单元(9)的阵列(5)产生的图像。

    X-Ray Detector with In-Pixel Processing Circuits
    54.
    发明申请
    X-Ray Detector with In-Pixel Processing Circuits 有权
    具有像素内处理电路的X射线检测器

    公开(公告)号:US20080277588A1

    公开(公告)日:2008-11-13

    申请号:US11908296

    申请日:2006-03-10

    IPC分类号: G01T1/24

    CPC分类号: G01T1/202

    摘要: The invention relates to an X-ray detector with an array of pixels (10) that are composed of a scintillation layer (11), a coupling layer (12), and a sensitive layer (13). The coupling layer (12) comprises light guiding units (17) and shielding units (16), wherein the shielding units (16) are disposed above electronic processing circuits (15a, 15b) that are susceptible to disturbances by X-radiation. In an alternative embodiment, the coupling layer comprises a material like lead-glass that is transparent for light and absorbing for X-radiation. Preferably a wavelength-shifting material incorporated into the coupling layer (12) shifts the wavelength (λ1) of the photons generated in the scintillation layer (11) to values (λ2) at which the sensitive layer (13) has a higher sensitivity.

    摘要翻译: 本发明涉及具有由闪烁层(11),耦合层(12)和敏感层(13)组成的像素阵列(10)的X射线检测器。 耦合层(12)包括导光单元(17)和屏蔽单元(16),其中屏蔽单元(16)设置在易受X射线干扰的电子处理电路(15a,15b)之上。 在替代实施例中,耦合层包括对于光透明并吸收X辐射的材料如铅玻璃。 掺入耦合层(12)中的波长迁移材料优选地将在闪烁层(11)中产生的光子的波长(λ<1> 1 N)移动到值(λ<2> >),敏感层(13)具有较高的灵敏度。

    Arrangement for collimating electromagnetic radiation
    55.
    发明申请
    Arrangement for collimating electromagnetic radiation 有权
    准直电磁辐射的布置

    公开(公告)号:US20070025519A1

    公开(公告)日:2007-02-01

    申请号:US10571711

    申请日:2004-09-03

    IPC分类号: G21K1/02

    CPC分类号: G21K1/02

    摘要: The invention relates to an arrangement for collimating electromagnetic radiation, comprising a macrocollimator C which has at least two cutouts, and microcollimator structures which are positioned in the cutouts of the macrocollimator and have lamellae that absorb electromagnetic radiation, so that collimator channels are formed which in each case extend such that they are transparent in a transmission direction.

    摘要翻译: 本发明涉及一种用于准直电磁辐射的装置,其包括具有至少两个切口的大型聚光器C和位于大型聚光器的切口中并具有吸收电磁辐射的薄片的微量聚焦器结构,从而形成准直器通道, 每个壳体在传送方向上是透明的。

    Multiple focal spot X-ray radiation filtering
    56.
    发明授权
    Multiple focal spot X-ray radiation filtering 有权
    多焦点X射线辐射过滤

    公开(公告)号:US09424958B2

    公开(公告)日:2016-08-23

    申请号:US14117869

    申请日:2012-05-30

    摘要: For the generation of multiple-energy X-ray radiation, an X-ray tube (10) for generating multiple-energy X-ray radiation includes an anode (12) and a filter (14). At least a first (16) and a second focal spot position (18) are offset from each other in an offset direction (20) transverse to an X-ray radiation projection direction. The filter includes a first plurality (22) of first portions (24) with first filtering characteristics for X-ray radiation and a second plurality (26) of second portions (28) with second filtering characteristics for X-ray radiation. The filter is a directional filter adapted in a such a way that at least a first X-ray beam (30) emanating from the first focal spot position at least partly passes through the filter unit via the first portions, and a second X-ray beam (32) emanating from the second focal spot position passes obliquely through the first and the second portions when passing through the filter unit.

    摘要翻译: 为了产生多能量X射线辐射,用于产生多能X射线辐射的X射线管(10)包括阳极(12)和过滤器(14)。 至少第一(16)和第二焦斑位置(18)在横向于X射线辐射投影方向的偏移方向(20)上彼此偏移。 滤波器包括具有用于X射线辐射的第一滤波特性的第一多个第一部分(22)和具有用于X射线辐射的第二滤波特性的第二多个第二部分(26)。 过滤器是一种定向过滤器,其适于使得从第一焦点位置发出的至少第一X射线束(30)至少部分地经由第一部分穿过过滤器单元,并且第二X射线 从第二焦点位置发出的光束(32)在通过过滤器单元时倾斜地穿过第一和第二部分。

    Multiple-source imaging system with flat-panel detector
    57.
    发明授权
    Multiple-source imaging system with flat-panel detector 有权
    具有平板检测器的多源成像系统

    公开(公告)号:US08891726B2

    公开(公告)日:2014-11-18

    申请号:US12864880

    申请日:2009-02-02

    IPC分类号: G06K9/00 A61B6/00 A61B6/03

    摘要: When performing nuclear (e.g., SPECT or PET) and CT scans on a patient, an imaging system (10) includes three or more carbon nanotube x-ray sources (20) are circumferentially spaced along an arc of a rotatable gantry (16) that spans a distance larger than a maximum cross-sectional dimension of a section of a patient (14) to be imaged. The x-ray sources are sequentially pulsed to emit x-rays for scanning a section of a patient (14) including a volume of interest (VOI) (13). Only one source (20) is in an ON state at a time to create a duty cycle, which reduces cooling time for the respective sources as well as radiation dose to the subject. X-rays traversing the patient (14) are received at a flat panel x-ray detector (22) that has a width smaller than the maximum cross-sectional dimension, which further reduces the weight and size of the system (10).

    摘要翻译: 当对患者进行核(例如SPECT或PET)和CT扫描时,成像系统(10)包括三个或更多个碳纳米管x射线源(20)沿着可旋转机架(16)的圆弧沿圆周间隔开, 跨越要被成像的患者(14)的一部分的最大横截面尺寸的距离。 x射线源被顺序地脉冲以发射X射线,用于扫描包括感兴趣体积(VOI)(13)的患者(14)的一部分。 一次只有一个源(20)处于ON状态以创建占空比,这降低了各个源的冷却时间以及对被摄体的辐射剂量。 穿过患者(14)的X射线被接收在具有小于最大横截面尺寸的宽度的平板X射线检测器(22)上,这进一步减小了系统(10)的重量和尺寸。

    Non-parallel grating arrangement with on-the-fly phase stepping, X-ray system
    58.
    发明授权
    Non-parallel grating arrangement with on-the-fly phase stepping, X-ray system 有权
    非平行光栅布置,具有飞行相位步进,X射线系统

    公开(公告)号:US08848863B2

    公开(公告)日:2014-09-30

    申请号:US13514061

    申请日:2010-12-03

    IPC分类号: A61B6/00 G21K1/06

    摘要: The present invention relates to X-rayimage acquisition technology in general. Employing phase-contrast imaging for X-rayimage acquisition may significantly enhance the visibility of structures in images acquired. However, phase-contrast information may only be obtainable in a small detector region with subsequent image acquisitions requiring individual phase stepping states to allow reconstruction of an X-ray image. Accordingly, a grating arrangement for phase-contrast imaging is provided which may allow on the fly phase stepping during a field of view scan. According to the present invention a grating arrangement (1) for phase-contrast imaging is provided, comprising a first grating element (8) and a second grating element (10). Each of the first grating element (8) and the second grating element (10) comprises a trench structure. The trench structure comprises at least one trench region (9) and at least one barrier region (3). The at least one trench region (9) and the at least one barrier region (3) are at least locally arranged in parallel. The first grating element (8) and the second grating element (10) are arranged such that the trench structure of the first grating element (8) and the trench structure of the second grating element (10) are non-parallel comprising an angle α.

    摘要翻译: 本发明一般涉及X射线图像采集技术。 采用X射线图像采集的相位对比成像可以显着增强获得的图像中结构的可视性。 然而,相位对比度信息只能在小的检测器区域中获得,随后的图像采集需要各个相位步进状态以允许重建X射线图像。 因此,提供了用于相位对比成像的光栅装置,其可以在视野扫描期间在飞行阶段上进行步进。 根据本发明,提供了一种用于相位对比成像的光栅装置(1),包括第一光栅元件(8)和第二光栅元件(10)。 第一光栅元件(8)和第二光栅元件(10)中的每一个包括沟槽结构。 沟槽结构包括至少一个沟槽区(9)和至少一个势垒区(3)。 至少一个沟槽区域(9)和至少一个阻挡区域(3)至少局部地平行布置。 第一光栅元件(8)和第二光栅元件(10)被布置成使得第一光栅元件(8)的沟槽结构和第二光栅元件(10)的沟槽结构不平行,包括角度α 。

    Radiation detection and a method of manufacturing a radiation detector
    59.
    发明授权
    Radiation detection and a method of manufacturing a radiation detector 有权
    辐射检测和辐射探测器的制造方法

    公开(公告)号:US08564084B2

    公开(公告)日:2013-10-22

    申请号:US12996400

    申请日:2009-06-09

    IPC分类号: H01L31/115 H01L21/00

    CPC分类号: G01T1/2928

    摘要: The invention relates to a radiation detector (10), comprising an array of pixels (1), wherein each pixel (1) comprises a conversion layer of a semiconductor material (4) for converting incident radiation into electrical signals and wherein each pixel (1) is surrounded by a trench (3) that is at least partly filled with a barrier material that absorbs at least a part of photons generated by the incident radiation. The invention also relates to a method of manufacturing such a radiation detector (10).

    摘要翻译: 本发明涉及一种包括像素阵列(1)的辐射检测器(10),其中每个像素(1)包括用于将入射辐射转换成电信号的半导体材料(4)的转换层,并且其中每个像素 )由至少部分地填充有吸收入射辐射产生的光子的至少一部分的阻挡材料的沟槽(3)包围。 本发明还涉及一种制造这种辐射探测器(10)的方法。

    RADIATION DETECTOR WITH PHOTODETECTORS
    60.
    发明申请
    RADIATION DETECTOR WITH PHOTODETECTORS 有权
    带光电探测器的辐射探测器

    公开(公告)号:US20130256538A1

    公开(公告)日:2013-10-03

    申请号:US13991482

    申请日:2011-12-12

    申请人: Gereon Vogtmeier

    发明人: Gereon Vogtmeier

    IPC分类号: G01T1/20

    CPC分类号: G01T1/2006 G01T1/2008

    摘要: The invention relates to a radiation detector (100) comprising a scintillator group with for example two scintillator elements (120a, 120b) for converting incident primary photons (X, X′) into secondary photons (λ, λ′) according to a characteristic emission spectrum. Moreover, the detector comprises at least two photodetectors (120a, 120b) for converting said secondary photons into electrical signals, wherein said photodetectors have different absorption spectra and can be read out separately. According to a preferred embodiment of the invention, the photodetectors are organic photodetectors (120a, 120b). The scintillator elements (120a, 120b) and the photodetectors are preferably arranged in a stack one behind the other. Due to the at least two photodetectors (120a, 120b), additional information about incident primary radiation (X, X′) can be collected.

    摘要翻译: 本发明涉及一种辐射检测器(100),其包括闪烁体组,其具有例如两个闪烁体元件(120a,120b),用于根据特征发射将入射的初级光子(X,X')转换成次级光子(λ,λ') 光谱。 此外,检测器包括用于将所述次级光子转换为电信号的至少两个光电检测器(120a,120b),其中所述光电检测器具有不同的吸收光谱并且可以分别读出。 根据本发明的优选实施例,光电检测器是有机光电检测器(120a,120b)。 闪烁体元件(120a,120b)和光电检测器优选地以堆叠方式彼此排列。 由于至少两个光电检测器(120a,120b),可以收集关于入射初级辐射(X,X')的附加信息。