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    • 2. 发明授权
    • X-ray image detector
    • X射线图像检测器
    • US07601961B2
    • 2009-10-13
    • US11570604
    • 2005-06-09
    • Anthony Roy FranklinMartin John PowellMichael OverdickAugusto NascettiWalter RuettenTiemen PoorterLex Alving
    • Anthony Roy FranklinMartin John PowellMichael OverdickAugusto NascettiWalter RuettenTiemen PoorterLex Alving
    • H05G1/64
    • H01L27/14658H01L27/14676
    • 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.
    • 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。
    • 4. 发明申请
    • X-Ray Image Detector
    • X射线图像检测器
    • US20070211858A1
    • 2007-09-13
    • US11570604
    • 2005-06-09
    • Anthony FranklinMartin PowellMichael OverdickAugusto NascettiWalter RuettenTiemen PoorterLex Alving
    • Anthony FranklinMartin PowellMichael OverdickAugusto NascettiWalter RuettenTiemen PoorterLex Alving
    • G01T1/02H01L27/146
    • H01L27/14658H01L27/14676
    • 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 regon 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.
    • 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较低离子处。 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。
    • 7. 发明授权
    • Gate circuit having increased voltage handling capability
    • 门电路具有增加的电压处理能力
    • US5182479A
    • 1993-01-26
    • US658792
    • 1991-02-07
    • Frank P. BehagelTiemen PoorterPetrus A. C. M. Nuijten
    • Frank P. BehagelTiemen PoorterPetrus A. C. M. Nuijten
    • H03K17/0812H03K17/687
    • H03K17/6872H03K17/08122
    • A gate circuit includes an N-channel and a P-channel insulated gate field-effect transistor whose parallel-connected drain-source paths constitute an analog signal gate and a control circuit, connected to the respective gate electrodes, to turn on and/or turn off the two field-effect transistors. In order to handle signals whose voltage value is higher than the maximum permissible drain-source voltage in the on-state of the N-channel field-effect transistor, means are provided, for turning on the N-channel field-effect transistor at least at a drain-source voltage below a predetermined value. In an embodiment of the invention the means include delay means coupled to the control circuit for turning on the N-channel field-effect transistor with a delay relative to the P-channel field-effect transistor. In another embodiment of the invention the means include switching means arranged in series with the analog signal gate, for temporarily connecting the signal gate to at least one auxiliary voltage.
    • 栅极电路包括N沟道和P沟道绝缘栅场效应晶体管,其并联连接的漏极 - 源极路径构成模拟信号栅极和连接到各个栅电极的控制电路,以导通和/或 关闭两个场效应晶体管。 为了处理电压值高于N沟道场效应晶体管的导通状态下的最大允许漏源电压的信号,提供了至少用于接通N沟道场效应晶体管的装置 在低于预定值的漏极 - 源极电压下。 在本发明的实施例中,装置包括耦合到控制电路的延迟装置,用于以相对于P沟道场效应晶体管的延迟来导通N沟道场效应晶体管。 在本发明的另一实施例中,装置包括与模拟信号门串联设置的开关装置,用于将信号门临时连接到至少一个辅助电压。
    • 10. 发明申请
    • FAST TOMOSYNTHESIS SCANNER APPARATUS AND CT-BASED METHOD BASED ON ROTATIONAL STEP-AND-SHOOT IMAGE ACQUISTION WITHOUT FOCAL SPOT MOTION DURING CONTINUOUS TUBE MOVEMENT FOR USE IN CONE-BEAM VOLUME CT MAMMOGRAPHY IMAGING
    • US20110026667A1
    • 2011-02-03
    • US12933922
    • 2009-03-26
    • Tiemen Poorter
    • Tiemen Poorter
    • A61B6/03
    • A61B6/502A61B6/025A61B6/032A61B6/4021A61B6/4085A61B6/466
    • The present invention generally refers to computed tomography (CT) based imaging systems and, more particularly, to a fast 3D tomosynthesis scanner apparatus and CT-based method without focal spot motion during continuous tube movement around an object of interest (O) or tissue region (M) to be examined (herein also referred to as “object”), which may advantageously be used in cone-beam volume CT mammography imaging so as to avoid motion artifacts and blurring effects. According to the present invention, said 3D tomosynthesis scanner apparatus is adapted to perform a rotational step-and-shoot image acquisition procedure for acquiring a set of 2D projection images during a continuous rotational movement of an X-ray tube (101) in an azi-muthal direction (+φ) along an arc segment of a circular trajectory when rotating around said object (O, M) and subjecting these 2D projection images to a 3D reconstruction procedure. According to the present invention, it is foreseen that, during the image acquisition time for each 2D projection image, the focal spot on the X-ray tube's anode is moved in an opposite direction (−φ)from a start position (bs) to an end position (be) with respect to the rotary X-ray tube's housing such that the azimuthal path distance (Ab) covered by the X-ray tube (101) due to the continuous rotational tube movement during this time is compensated. The 3D tomosynthesis scanner further comprises a mechanism for switching the focal spot on the X-ray tube's anode back to its start position (bs) with respect to said tube housing before starting a new image acquisition process for acquiring image data of a next 2D projection image. The superposition of the focal spot movement with respect to the tube housing and the continuous rotational movement of the X-ray tube (101) along said arc segment results in a stationary focal spot position relative to the object (O, M) and a stationary X-ray detector (104) diametrically oppositely arranged to the X-ray tube (101) with respect to said object (O) for each of the individual 2D projection images.