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公开(公告)号：US09201150B2
公开(公告)日：2015-12-01
申请号：US12918096
申请日：2009-02-19
申请人： Walter Ruetten , Tiemen Poorter , Rainer Kiewitt
发明人： Walter Ruetten , Tiemen Poorter , Rainer Kiewitt
CPC分类号： G01T1/2018 , H04N5/32 , H04N5/357
摘要： According to an embodiment of the invention, signals coming from a number of pixels or sub-pixels are compared and those signals from pixels or sub-pixels, which are substantially brighter than the other pixels in the comparison, are excluded from contributing to the output signal, to suppress direct detection events in X-ray detectors. For this an X-ray detector apparatus (101) can comprise: —an array (102) of pixel arrangements (303), —each pixel arrangement (303) comprising at least one radiation collection device (311) for converting incident radiation into a collection device signal, —switching arrangements (313, 324, 314, 142; 313, 315, 314, 352, 142; 313, 315, 314; 361) for providing to respectively one output element (141) a signal derived from the collection device signals of a plurality of radiation collection devices (311) of at least one pixel arrangement (303).
摘要翻译： 根据本发明的一个实施例，比较来自多个像素或子像素的信号，并且比较比较中基本上比其他像素亮的像素或子像素的信号被排除在对输出的贡献之外 信号，以抑制X射线检测器中的直接检测事件。 为此，X射线检测器装置（101）可以包括： - 像素装置（303）的阵列（102）， - 每个像素布置（303），包括至少一个辐射收集装置（311），用于将入射辐射转换成 收集装置信号， - 切换装置（313,324,314,142; 313,315,314,352,142; 313,315,314; 361），用于向所述收集装置信号分配一个输出元件（141） 至少一个像素装置（303）的多个辐射收集装置（311）的装置信号。
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12.发明申请公开(公告)号：US20100264324A1
公开(公告)日：2010-10-21
申请号：US12742941
申请日：2008-11-17
IPC分类号： G01T1/24
CPC分类号： G21K1/00
摘要： The invention relates to a radiation detector (3) comprising a detector array (5) having a periodical pattern of detector elements (51). Each detector element (51) comprises a sensor element (53) for converting incident radiation into an electrical charge. The sensor elements (53) are spaced at a sensor-center-to-center distance. Over the detector array (5) an imaging radiation-collimating structure (7) is disposed. The imaging radiation-collimating structure has a periodical pattern of radiation absorbing elements, which radiation absorbing elements are being spaced at a collimator center-to-center distance. The radiation detector (3) comprises a combiner for generating combiner-signals from the electrical charges of the sensor elements (53) of groups of an even number of sensor elements adjacent in a direction of the periodicity of the pattern of the radiation absorbing elements. The collimator center-to-center distance is approximately equal to twice the center-to-center distance of the groups of adjacent sensor elements. The radiation detector (3) further comprises a low-pass filter for receiving the combiner-signals and suppressing components of the combiner-signals with a frequency equal to or higher than a collimator frequency corresponding to the collimator center-to-center distance, thus providing a radiation detector which is easier to manufacture than the known radiation detector and which requires a relatively low degree of precision for the positioning of the radiation absorbing elements of the imaging radiation-collimating structure without introducing visible Moire effects in the image of an object to be imaged by the detector.
摘要翻译： 本发明涉及一种包括具有检测器元件周期性图案的检测器阵列（5）的辐射检测器（3）。 每个检测器元件（51）包括用于将入射辐射转换成电荷的传感器元件（53）。 传感器元件（53）以传感器中心到中心的距离间隔开。 在检测器阵列（5）上设置成像辐射准直结构（7）。 成像辐射准直结构具有辐射吸收元件的周期性图案，该辐射吸收元件以准直器中心到中心的距离间隔开。 辐射检测器（3）包括用于从传感器元件（53）的电荷产生组合器信号的组合器，所述组合器信号是沿着辐射吸收元件的图案周期方向相邻的偶数个传感器元件的组。 准直器的中心到中心距离近似等于相邻传感器元件组的中心到中心距离的两倍。 辐射检测器（3）还包括低通滤波器，用于接收组合器信号并以等于或高于与准直器中心到距离对应的准直器频率的频率抑制组合器信号的分量，从而 提供比已知辐射检测器更容易制造的辐射检测器，并且其需要相对较低的精度来定位成像辐射准直结构的辐射吸收元件，而不会在物体的图像中引入可见的莫尔效应 由检测器成像。
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公开(公告)号：US07601961B2
公开(公告)日：2009-10-13
申请号：US11570604
申请日：2005-06-09
申请人： Anthony Roy Franklin , Martin John Powell , Michael Overdick , Augusto Nascetti , Walter Ruetten , Tiemen Poorter , Lex Alving
发明人： Anthony Roy Franklin , Martin John Powell , Michael Overdick , Augusto Nascetti , Walter Ruetten , Tiemen Poorter , Lex Alving
IPC分类号： H05G1/64
CPC分类号： H01L27/14658 , H01L27/14676
摘要： An Y-ray detector apparatus comprises an array of detector pixels arranged into a plurality of sub-arrays. The pixels in each sub-array share a common dose sensing output provided to a dose sensing output conductor which extends to a periphery of the pixel array. The dose sensing output conductor for one sub-array of pixels passes through the area occupied by another sub-array of pixels, which can lead to unwanted cross talk. The invention provides a plurality of additional screening electrodes, with a screening electrode substantially adjacent the dose sensing output conductor for each sub-array of pixels. These screening electrodes reduce cross talk between the dose sensing output and other pixel electrodes. In another arrangement, each pixel further comprises a pixel electrode for each pixel formed at an upper region of the array, and the dose sensing output conductors are formed at a lower region of the array. An intermediate conductor layer is then provided which overlaps the dose sensing output conductors for other sub-arrays of pixels and which pass through the area occupied by the sub-array of pixels.
摘要翻译： Y射线检测器装置包括布置成多个子阵列的检测器像素的阵列。 每个子阵列中的像素共享提供给延伸到像素阵列的周边的剂量感测输出导体的公共剂量感测输出。 用于一个子像素阵列的剂量感测输出导体穿过由另一子像素阵列占据的区域，这可能导致不想要的串扰。 本发明提供了多个附加的屏蔽电极，其中每个子像素阵列具有与剂量感测输出导体基本相邻的屏蔽电极。 这些筛选电极减少剂量感测输出和其他像素电极之间的串扰。 在另一种布置中，每个像素还包括用于形成在阵列的上部区域的每个像素的像素电极，并且剂量感测输出导体形成在阵列的下部区域。 然后提供中间导体层，其与用于其他子像素阵列的剂量感测输出导体重叠，并且穿过由像素子阵列占据的区域。
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公开(公告)号：US20080267346A1
公开(公告)日：2008-10-30
申请号：US11913326
申请日：2006-04-28
申请人： Tiemen Poorter
发明人： Tiemen Poorter
IPC分类号： A61B6/00 , G01N23/087
摘要： The present invention relates to an X-ray imaging apparatus and a corresponding X-ray imaging method, in particular for X-ray fluoroscopy and for an application where a characteristic feature shall be extracted from acquired X-ray images. In order to reduce the total X-ray dose to which a patient is exposed for acquiring a series of X-ray images and, nevertheless, to allow the extraction of small characteristic features with high certainty, an X-ray imaging apparatus is proposed comprising: an imaging unit comprising an X-ray source (2) and an X-ray detector (4) for forming a series of X-ray images of an object (P) including a characteristic feature, a feature extraction unit (6) for extracting said characteristic feature from said series of X-ray images, and a control unit (7) for controlling the X-ray dose to which the object (P) is exposed for forming said series of X-ray images by controlling said X-ray source (2) such that the X-ray dose per X-ray image is larger for a first number of images than for the remaining number of images of said series.
摘要翻译： 本发明涉及一种X射线成像装置和相应的X射线成像方法，特别涉及用于X射线荧光透视和从获得的X射线图像中提取特征的应用。 为了减少患者暴露于用于获取一系列X射线图像的总X射线剂量，然而，为了允许高度确定地提取小特征特征，提出了一种X射线成像装置，其包括 ：包括用于形成包括特征特征的物体（P）的一系列X射线图像的X射线源（2）和X射线检测器（4）的成像单元，特征提取单元（6），用于 从所述一系列X射线图像提取所述特征特征;以及控制单元（7），用于通过控制所述X射线图像来控制所述物体（P）暴露以形成所述一系列X射线图像的X射线剂量， （2），使得每个X射线图像的X射线剂量对于第一数量的图像比对于所述系列的剩余图像数量更大。
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15.发明授权公开(公告)号：US08546765B2
公开(公告)日：2013-10-01
申请号：US12997891
申请日：2009-06-19
IPC分类号： G01T1/24
CPC分类号： G01T1/24 , H04N5/32 , H04N5/3559
摘要： An x-ray detector and its pixel circuit are described, that allow to cover a large dynamic range with automatic selection of the sensitivity setting in each pixel, thus providing improved signal to noise ratio with all exposure levels. X-ray detectors are required to cover a large dynamic range. The largest exposure determines the required pixel capacitance. However, a large pixel capacitance gives a bad signal to noise ratio with small exposures e.g. in the dark parts of the image. This invention disclosure describes several approaches to provide automatic sensitivity selection in the pixels. This ensures that low signals are stored in a small capacitor or read out with a high sensitivity with corresponding good signal to noise ratio, while larger signals are stored in larger capacitors or are read out with lower sensitivity so that no information is lost.
摘要翻译： 描述了X射线检测器及其像素电路，其允许通过自动选择每个像素中的灵敏度设置来覆盖大的动态范围，从而在所有曝光水平提供改善的信噪比。 X射线探测器需要覆盖大的动态范围。 最大的曝光决定所需的像素电容。 然而，较大的像素电容给出了较小的曝光率的信噪比差。 在图像的黑暗部分。 本发明公开描述了在像素中提供自动灵敏度选择的几种方法。 这确保了低信号被存储在小电容器中或以高灵敏度读出，具有相应的良好的信噪比，而较大的信号存储在较大的电容器中或以较低的灵敏度读出，从而不会丢失信息。
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16.发明申请公开(公告)号：US20110108735A1
公开(公告)日：2011-05-12
申请号：US12997891
申请日：2009-06-19
IPC分类号： G01T1/24
CPC分类号： G01T1/24 , H04N5/32 , H04N5/3559
摘要： An x-ray detector and its pixel circuit are described, that allow to cover a large dynamic range with automatic selection of the sensitivity setting in each pixel, thus providing improved signal to noise ratio with all exposure levels. X-ray detectors are required to cover a large dynamic range. The largest exposure determines the required pixel capacitance. However, a large pixel capacitance gives a bad signal to noise ratio with small exposures e.g. in the dark parts of the image. This invention disclosure describes several approaches to provide automatic sensitivity selection in the pixels. This ensures that low signals are stored in a small capacitor or read out with a high sensitivity with corresponding good signal to noise ratio, while larger signals are stored in larger capacitors or are read out with lower sensitivity so that no information is lost.
摘要翻译： 描述了X射线检测器及其像素电路，其允许通过自动选择每个像素中的灵敏度设置来覆盖大的动态范围，从而在所有曝光水平提供改善的信噪比。 X射线探测器需要覆盖大的动态范围。 最大的曝光决定所需的像素电容。 然而，较大的像素电容给出了较小的曝光率的信噪比差。 在图像的黑暗部分。 本发明公开描述了在像素中提供自动灵敏度选择的几种方法。 这确保了低信号被存储在小电容器中或以高灵敏度读出，具有相应的良好的信噪比，而较大的信号存储在较大的电容器中，或者以较低的灵敏度读出，从而不会丢失任何信息。
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公开(公告)号：US20100329421A1
公开(公告)日：2010-12-30
申请号：US12918096
申请日：2009-02-19
申请人： Walter Ruetten , Tiemen Poorter , Rainer Kiewitt
发明人： Walter Ruetten , Tiemen Poorter , Rainer Kiewitt
CPC分类号： G01T1/2018 , H04N5/32 , H04N5/357
摘要： According to an embodiment of the invention, signals coming from a number of pixels or sub-pixels are compared and those signals from pixels or sub-pixels, which are substantially brighter than the other pixels in the comparison, are excluded from contributing to the output signal, to suppress direct detection events in X-ray detectors. For this an X-ray detector apparatus (101) can comprise: —an array (102) of pixel arrangements (303), —each pixel arrangement (303) comprising at least one radiation collection device (311) for converting incident radiation into a collection device signal, —switching arrangements (313, 324, 314, 142; 313, 315, 314, 352, 142; 313, 315, 314; 361) for providing to respectively one output element (141) a signal derived from the collection device signals of a plurality of radiation collection devices (311) of at least one pixel arrangement (303).
摘要翻译： 根据本发明的一个实施例，比较来自多个像素或子像素的信号，并且比较比较中基本上比其他像素亮的像素或子像素的信号被排除在对输出的贡献之外 信号，以抑制X射线检测器中的直接检测事件。 为此，X射线检测器装置（101）可以包括： - 像素装置（303）的阵列（102）， - 每个像素布置（303），包括至少一个辐射收集装置（311），用于将入射辐射转换成 收集装置信号， - 切换装置（313,324,314,142; 313,315,314,352,142; 313,315,314; 361），用于向所述收集装置信号分配一个输出元件（141） 至少一个像素装置（303）的多个辐射收集装置（311）的装置信号。
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公开(公告)号：US20100116996A1
公开(公告)日：2010-05-13
申请号：US12596844
申请日：2008-04-17
申请人： Tiemen Poorter
发明人： Tiemen Poorter
CPC分类号： G01T1/2018
摘要： Detector with a partially transparent scintillator substrate According to an exemplary embodiment of the present invention, a flat detector is provided in which an opaque layer between a transparent substrate and a CsI scintillator is arranged. This layer is made partially transparent by opening many small holes in the opaque layer with for example a pulsed laser. This allows for the application of light to the inside of the front end of the flat detector through the opaque layer.
摘要翻译： 具有部分透明的闪烁体基板的检测器根据本发明的示例性实施例，提供了一种平面检测器，其中布置了透明基板和CsI闪烁体之间的不透明层。 通过在例如脉冲激光器的不透明层中打开许多小孔，将该层制成部分透明的。 这允许通过不透明层将光施加到平坦检测器的前端的内部。
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公开(公告)号：US07339177B2
公开(公告)日：2008-03-04
申请号：US10560681
申请日：2004-06-15
IPC分类号： G01T1/20
CPC分类号： G01T1/2018
摘要： A radiation detector comprises an electrode structure, a planarising layer being disposed over the electrode structure and a protective stack which covers the planarising layer. The planarising layer evens out substantial differences between levels of the electrode structure above the substrate on which the electrode structure is disposed. Consequently, cracks, weak spots and other defects in the protective stack are to a large extent avoided. Because the planarising layer covers essentially the entire electrode structure, practically all sources of defects, notably cracks, in the protective stack are avoided.
摘要翻译： 辐射检测器包括电极结构，平面化层设置在电极结构之上，覆盖平坦层的保护层。 平面化层在电极结构设置的基板上方的电极结构的层次之间有显着差异。 因此，保护层中的裂纹，弱点和其他缺陷在很大程度上被避免。 由于平面化层基本上覆盖整个电极结构，所以避免了保护层中几乎所有的缺陷源，特别是裂纹。
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公开(公告)号：US20060124857A1
公开(公告)日：2006-06-15
申请号：US10560681
申请日：2004-06-15
申请人： Sipke Bijlsma , Toru Sakai , Tiemen Poorter , Martin Powell
发明人： Sipke Bijlsma , Toru Sakai , Tiemen Poorter , Martin Powell
IPC分类号： G01T1/24
CPC分类号： G01T1/2018
摘要： A radiation detector comprises an electrode structure, a planarising layer being disposed over the electrode structure and a protective stack which covers the planarising layer. The planarising layer evens out substantial differences between levels of the electrode structure above the substrate on which the electrode structure is disposed. Consequently, cracks, weak spots and other defects in the protective stack are to a large extent avoided. Because the planarising layer covers essentially the entire electrode structure, practically all sources of defects, notably cracks, in the protective stack are avoided.
摘要翻译： 辐射检测器包括电极结构，平面化层设置在电极结构之上，覆盖平坦层的保护层。 平面化层在电极结构设置的基板上方的电极结构的层次之间有显着差异。 因此，保护层中的裂纹，弱点和其他缺陷在很大程度上被避免。 由于平面化层基本上覆盖整个电极结构，所以避免了保护层中几乎所有的缺陷源，特别是裂纹。
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