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1. 发明申请

WO2007057841A2 SYSTEMS AND METHODS USING X-RAY TUBE SPECTRA FOR COMPUTED TOMOGRAPHY APPLICATIONS 审中-公开
标题翻译：使用X射线管光谱进行计算机断层摄影应用的系统和方法
公开(公告)号：WO2007057841A2
公开(公告)日：2007-05-24
申请号：PCT/IB2006054246
申请日：2006-11-14
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP , ZEITLER GUENTER , HERRMANN CHRISTOPH , ENGEL KLAUS J , BAEUMER CHRISTIAN , ROESSL EWALD , PROSKA ROLAND
发明人： ZEITLER GUENTER , HERRMANN CHRISTOPH , ENGEL KLAUS J , BAEUMER CHRISTIAN , ROESSL EWALD , PROSKA ROLAND
IPC分类号： A61B6/03
CPC分类号： A61B6/4241 , A61B6/032 , A61B6/482
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：提供了计算机断层摄影（CT）系统，其利用与CT数据的生成和/或解释相关的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。可以用各种方式确定X射线谱，例如，使用Monte-Carlo模拟的输出将光谱X射线管模型引入到CT系统中，和/或处理测量的实验谱管数据 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产生和/或存储，并且可以用于支持能量选择性检测方法和/或光谱CT图像的产生。

2. 发明申请

WO2008059425A2 RADIATION DETECTOR WITH MULTIPLE ELECTRODES ON A SENSITIVE LAYER 审中-公开
标题翻译：辐射探测器与敏感层上的多个电极
公开(公告)号：WO2008059425A2
公开(公告)日：2008-05-22
申请号：PCT/IB2007054577
申请日：2007-11-12
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , ENGEL KLAUS J , ZEITLER GUENTER , BAEUMER CHRISTIAN , HERRMANN CHRISTOPH , WIEGERT JENS , PROKSA ROLAND , ROESSL EWALD , STEADMAN BOOKER ROGER
发明人： ENGEL KLAUS J , ZEITLER GUENTER , BAEUMER CHRISTIAN , HERRMANN CHRISTOPH , WIEGERT JENS , PROKSA ROLAND , ROESSL EWALD , STEADMAN BOOKER ROGER
IPC分类号： G01T1/29
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，而其背面承载反电极（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。

3. 发明申请

WO2009133481A3 COUNTING DETECTOR 审中-公开
标题翻译：计数器
公开(公告)号：WO2009133481A3
公开(公告)日：2010-06-10
申请号：PCT/IB2009051192
申请日：2009-03-20
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , MARKS AVIV , HERRMANN CHRISTOPH , ROESSL EWALD
发明人： MARKS AVIV , HERRMANN CHRISTOPH , ROESSL EWALD
IPC分类号： G01T1/17
CPC分类号： G01T1/17
摘要： A pulse shaper (124) includes an integrator (202) with a feedback capacitor (208) that stores integrated charge of a charge pulse indicative of a detected photon. An output pulse of the integrator includes a peak amplitude indicative of the detected photon. An end pulse identifier (214) identifies the end of the charge pulse. A controller (216) generates a control signal that invokes a reset of the integrator (202) when the end of the 5 pulse is identified. An energy discriminator (128) includes a chain of comparators (132) connected in series. An output of each of the comparators (702, 704) is influenced by an output of a previous one of the comparators (702, 704). A decision component (706) determines an output of the comparators (702, 704), and a controller component (708) triggers the decision component (706) to store the output of the comparators (702, 704) 10 after lapse of a charge collection time.
摘要翻译：脉冲整形器（124）包括具有反馈电容器（208）的积分器（202），该反馈电容器存储指示检测到的光子的电荷脉冲的积分电荷。积分器的输出脉冲包括指示检测到的光子的峰值振幅。结束脉冲识别器（214）识别充电脉冲的结束。当识别出5脉冲的结束时，控制器（216）产生调用积分器（202）的复位的控制信号。能量鉴别器（128）包括串联连接的比较器链（132）。每个比较器（702,704）的输出受到前一个比较器（702,704）的输出的影响。判定部件（706）确定比较器（702,704）的输出，并且控制器部件（708）触发判定部件（706），以在经过充电之后存储比较器（702,704）10的输出收集时间。

4. 发明申请

WO2012104770A2 DIFFERENTIAL PHASE-CONTRAST IMAGING WITH FOCUSSING DEFLECTION STRUCTURE PLATES 审中-公开
标题翻译：聚焦偏转结构板的微分相位对比成像
公开(公告)号：WO2012104770A2
公开(公告)日：2012-08-09
申请号：PCT/IB2012050418
申请日：2012-01-30
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , ROESSL EWALD , KOEHLER THOMAS
发明人： ROESSL EWALD , KOEHLER THOMAS
IPC分类号： G21K1/06
CPC分类号： G21K1/065 , G01N23/04 , G21K1/06 , G21K2207/005
摘要： The present invention relates to X-ray differential phase-contrast imaging, in particular to a deflection device for X-ray differential phase-contrast imaging. In order to provide differential phase-contrast imaging with improved dose efficiency, a deflection device (28) for X-ray differential phase-contrast imaging is provided, comprising a deflection structure (41) with a first plurality (44) of first areas (46), and a second plurality (48) of second areas (50). The first areas are provided to change the phase and/or amplitude of an X- ray radiation; and wherein the second areas are X-ray transparent. The first and second areas are arranged periodically such that, in the cross section, the deflection structure is provided with a profile arranged such that the second areas are provided in form of groove-like recesses (54) formed between first areas provided as projections (56). The adjacent projections form respective side surfaces (58)partly enclosing the respective recess arranged in between. The side surfaces of each recess have a varying distance (60) across the depth (62) of the recess.
摘要翻译： X射线差分相位对比成像技术领域本发明涉及X射线差分相位对比成像，尤其涉及一种用于X射线差分相位对比成像的偏转装置。为了提供具有改善的剂量效率的差分相衬成像，提供了用于X射线差分相衬成像的偏转装置（28），其包括具有第一多个（44）第一区域（44）的偏转结构（41） 46）和第二多个（48）第二区域（50）。提供第一区域以改变X射线辐射的相位和/或振幅; 并且其中第二区域是X射线透明的。第一区域和第二区域周期性地布置，使得在该横截面中，偏转结构设置有轮廓，该轮廓布置成使得第二区域以形成在作为凸起设置的第一区域之间的凹槽状凹部（54） 56）。相邻的凸出部分形成相应的侧表面（58），部分地包围设置在其间的相应凹槽。每个凹槽的侧表面在凹槽的深度（62）上具有变化的距离（60）。

5. 发明申请

WO2007110796A2 DYNAMIC OPTIMIZATION OF THE SIGNAL-TO-NOISE RATIO OF DUAL-ENERGY ATTENUATION DATA FOR RECONSTRUCTING IMAGES 审中-公开
标题翻译：用于重建图像的双能量衰减数据的信号噪声比的动态优化
公开(公告)号：WO2007110796A2
公开(公告)日：2007-10-04
申请号：PCT/IB2007050884
申请日：2007-03-15
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , ZIEGLER ANDY , ROESSL EWALD
发明人： ZIEGLER ANDY , ROESSL EWALD
CPC分类号： G01T1/2985
摘要： It is described a method for dynamically optimizing the signal-to-noise ratio of attenuation data related to two different X-ray energies for reconstructing an image of an object under examination. The method comprises (a) estimating the thickness and the material composition of the object at a plurality of different projection angles, (b) for each of the various projection angles calculating for a variety of combinations of different first and second X-ray energies a corresponding common signal-to-noise ratio, (c) for each of the various projection angles choosing the first and the second X-ray energy causing the maximum corresponding common signal-to-noise ratio, and (d) for each of the various projection angles acquiring X-ray attenuation data of the object whereby the two X-ray energies are the X-ray energies causing a maximum signal-to-noise ratio assigned to the respective projection angle.
摘要翻译：描述了一种用于动态优化与两个不同X射线能量相关的衰减数据的信噪比的方法，用于重建被检查物体的图像。该方法包括：（a）以多个不同的投影角度估计物体的厚度和材料成分，（b）对于针对不同的第一和第二X射线能量的各种组合计算的各种投影角度中的每一个相应的公共信噪比，（c）对于选择第一和第二X射线能量的各种投影角度中的每一个引起最大对应的公共信噪比，（d）对于各种投影角度获取物体的X射线衰减数据，由此两个X射线能量是分配给各个投影角度的最大信噪比的X射线能量。

6. 发明申请

WO2008155679A3 DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS 审中-公开
标题翻译：用于多光子计数读数电路的数字脉冲处理
公开(公告)号：WO2008155679A3
公开(公告)日：2009-07-09
申请号：PCT/IB2008052042
申请日：2008-05-23
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , PROKSA ROLAND , SCHLOMKA JENS-PETER , ROESSL EWALD , LIRAN TUVIA , MARKS AVIV
发明人： PROKSA ROLAND , SCHLOMKA JENS-PETER , ROESSL EWALD , LIRAN TUVIA , MARKS AVIV
IPC分类号： G01T1/17
CPC分类号： G01T1/171
摘要： An apparatus includes a local minimum identifier (408) that identifies a local minimum between overlapping pulses in a signal, wherein the pulses have amplitudes that are indicative of the energy of successively detected photons from a multi-energetic radiation beam by a radiation sensitive detector, and a pulse pile-up error corrector (232) that corrects, based on the local minimum, for a pulse pile-up energy-discrimination error when energy-discriminating the pulses using at least two thresholds corresponding to different energy levels. This technique may reduce spectral error when counting photons at a high count rate.
摘要翻译：一种装置包括识别信号中重叠脉冲之间的局部最小值的局部最小标识符（408），其中脉冲具有指示由辐射敏感检测器从多能辐射束连续检测到的光子的能量的幅度，以及脉冲堆积误差校正器（232），其基于局部最小值来校正针对对应于不同能级的至少两个阈值对脉冲进行能量鉴别的脉冲堆积能量鉴别误差。当以高计数率计数光子时，该技术可能降低光谱误差。

7. 发明申请

WO2010061307A2 SPECTRAL IMAGING 审中-公开
标题翻译：光谱成像
公开(公告)号：WO2010061307A2
公开(公告)日：2010-06-03
申请号：PCT/IB2009054884
申请日：2009-11-03
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , ROESSL EWALD
发明人： ROESSL EWALD
CPC分类号： G01T1/1647
摘要： A spectral processor (118) includes a first processing channel (120) that generates a first spectral signal derived from a detector signal, wherein the first spectral signal includes first spectral information about the detector signal, and a second processing channel (120) that generates a second spectral signal derived from the detector signal, wherein the second spectral signal includes second spectral information about the detector signal, wherein the first and second spectral signals are used to spectrally resolve the detector signal, and wherein the detector signal is indicative of detected polychromatic radiation.
摘要翻译：光谱处理器（118）包括产生从检测器信号导出的第一光谱信号的第一处理信道（120），其中第一光谱信号包括关于检测器信号的第一光谱信息，以及产生第二光谱信号从所述检测器信号导出的第二光谱信号，其中所述第二光谱信号包括关于所述检测器信号的第二光谱信息，其中所述第一和第二光谱信号用于对所述检测器信号进行光谱解析，并且其中所述检测器信号指示检测到的多色辐射。

8. 发明申请

WO2013030708A3 PHOTON COUNTING DETECTOR 审中-公开
标题翻译：光子计数探测器
公开(公告)号：WO2013030708A3
公开(公告)日：2013-06-27
申请号：PCT/IB2012054170
申请日：2012-08-16
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , ROESSL EWALD , PROKSA ROLAND
发明人： ROESSL EWALD , PROKSA ROLAND
IPC分类号： G01T1/24
CPC分类号： G01T1/24 , G01T1/241 , G01T1/247
摘要： Adetector array includes at least one direct conversion detector pixel (114 - 114 M ) 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, anda gate electrode disposed in the direct conversion material, parallelto and between the cathode and anode layers.
摘要翻译：探测器阵列包括至少一个被配置为探测多色电离辐射的光子的直接转换探测器像素（114-114 M）。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），设置在所述阴极层阳极层以及设置在直接转换材料中的栅极电极，平行于阴极层和阳极层之间。

9. 发明申请

WO2012095713A9 DUAL -ENERGY TOMOGRAPHIC IMAGING SYSTEM 审中-公开
标题翻译：双重图像成像系统
公开(公告)号：WO2012095713A9
公开(公告)日：2013-05-23
申请号：PCT/IB2011056004
申请日：2011-12-29
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , ROESSL EWALD , KOEHLER THOMAS , THRAN AXEL
发明人： ROESSL EWALD , KOEHLER THOMAS , THRAN AXEL
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/408 , G06T2211/424
摘要： The invention relates to an imaging system (30) for imaging an object. A projection data providing unit (31) provides acquired spectral projection data of an object comprising at least two components, and a reconstruction unit (10) iteratively reconstructs at least two final component images of the object by performing several iteration steps, in which at least two intermediate component images are updated based on the acquired spectral projection data and a penalty term, which is indicative of the correlated noise between the at least two intermediate component images. Since the at least two intermediate component images are updated based on the acquired spectral projection data and a penalty term, which is indicative of the correlated noise, correlated noise is penalized during the iterative reconstruction. The finally resulting component images of the object are therefore less corrupted by correlated noise and have an improved image quality.
摘要翻译：本发明涉及一种用于对物体成像的成像系统（30）。投影数据提供单元（31）提供包括至少两个分量的对象的获取的光谱投影数据，并且重建单元（10）通过执行几个迭代步骤来迭代地重构对象的至少两个最终分量图像，其中至少基于所获取的光谱投影数据和惩罚项来更新两个中间分量图像，所述惩罚项指示所述至少两个中间分量图像之间的相关噪声。由于基于所获取的频谱投影数据和指示相关噪声的罚分项来更新至少两个中间分量图像，所以在迭代重建期间相关噪声被惩罚。因此，最终产生的对象的分量图像被相关噪声较少损坏并且具有改善的图像质量。

10. 发明申请

WO2009122317A3 SPECTRAL DETECTOR CALIBRATION 审中-公开
标题翻译：光谱检测器校准
公开(公告)号：WO2009122317A3
公开(公告)日：2010-02-25
申请号：PCT/IB2009051189
申请日：2009-03-20
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , LIVNE AMIR , WAINER NAOR , SCHLOMKA JENS-PETER , ROESSL EWALD , PROKSA ROLAND
发明人： LIVNE AMIR , WAINER NAOR , SCHLOMKA JENS-PETER , ROESSL EWALD , PROKSA ROLAND
IPC分类号： G01N23/00 , A61B6/00 , G01T7/00
CPC分类号： G01T7/005 , A61B6/032 , A61B6/4035 , A61B6/4042 , A61B6/4441 , A61B6/482 , A61B6/585 , G01N2223/3037 , G01T1/1647
摘要： A method includes detecting radiation that traverses a material having a known spectral characteristic with a radiation sensitive detector pixel that outputs a signal indicative of the detected radiation and determining a mapping between the output signal and the spectral characteristic. The method further includes determining an energy of a photon detected by the radiation sensitive detector pixel based on a corresponding output of the radiation sensitive detector pixel and the mapping.
摘要翻译：一种方法包括利用辐射敏感检测器像素检测穿过具有已知光谱特性的材料的辐射，所述辐射敏感检测器像素输出指示检测到的辐射的信号并确定输出信号和光谱特性之间的映射。该方法还包括基于辐射敏感检测器像素的对应输出和映射来确定由辐射敏感检测器像素检测到的光子的能量。

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