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

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  ROESSL EWALD

Inventor： ROESSL EWALD

CPC classification number: G01T1/1647

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2010004460A1

公开(公告)日：2010-01-14

申请号：PCT/IB2009/052670

申请日：2009-06-22

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  ROESSL, Ewald ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter

Inventor： ROESSL, Ewald ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter

IPC: A61B6/00

CPC classification number: G01N23/087 ,  A61B5/4869 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/481 ,  A61B6/482

Abstract: An imaging system including a radiation source (110) that emits poly-chromatic radiation that traverses an examination region and a detector (116) that detects radiation traversing the examination region and produces a signal indicative of the energy of a detected photon. The system further includes an energy discriminator (122) that energy resolves the signal based on a plurality of different energy thresholds, wherein at least two of the energy thresholds have values corresponding to at least two different K-edge energies of two different elements in a mixture disposed in the examination region. The system also includes a signal decomposer (132) that decomposes the energy-resolved signal into at least a multi K-edge component representing the at least two different K-edge energies. In one instance, a stoichiometric ratio of the two different elements in the contrast agent is known and substantially constant.

Abstract translation: 一种成像系统，包括发射穿过检查区域的多色辐射的辐射源（110）和检测穿过检查区域的辐射的检测器（116），并产生指示检测到的光子的能量的信号。 该系统还包括能量鉴别器（122），其能量基于多个不同的能量阈值来解决信号，其中至少两个能量阈值具有对应于两个不同元素的至少两个不同K边能量的值 混合物置于检查区域。 该系统还包括信号分解器（132），其将能量分辨信号分解成代表至少两个不同的K边缘能量的至少多个K边缘分量。 在一种情况下，造影剂中两种不同元素的化学计量比是已知的并且基本上是恒定的。

公开(公告)号：WO2009122317A2

公开(公告)日：2009-10-08

申请号：PCT/IB2009/051189

申请日：2009-03-20

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  LIVNE, Amir ,  WAINER, Naor ,  SCHLOMKA, Jens-Peter ,  ROESSL, Ewald ,  PROKSA, Roland

Inventor： LIVNE, Amir ,  WAINER, Naor ,  SCHLOMKA, Jens-Peter ,  ROESSL, Ewald ,  PROKSA, Roland

IPC: G01N23/02 ,  A61B6/03

CPC classification number: G01T7/005 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/585 ,  G01N2223/3037 ,  G01T1/1647

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2009072044A2

公开(公告)日：2009-06-11

申请号：PCT/IB2008/054997

申请日：2008-11-28

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  SCHLOMKA, Jens-peter ,  ROESSL, Ewald

Inventor： SCHLOMKA, Jens-peter ,  ROESSL, Ewald

CPC classification number: G21K1/06 ,  G21K2201/062 ,  G21K2201/067

Abstract: An imaging apparatus (14) based on the detection of X-ray photons, in particular for medical use, is described. The imaging apparatus (14) comprises a radiation source (16) for generating a flow (18) of X-ray radiation, a detector (20) for detecting X-ray radiation, a control unit (22) adapted to control the radiation source (16), to read out information from the detector (20) and to process the information into a visual image (24), and a device (10) for obtaining a monochromatic flow (12) of X-ray radiation. Furthermore, a device (10) is described, which comprises a positioning apparatus (34) and a crystalline element (36) mounted on the positioning apparatus (34), wherein the positioning apparatus (34) is adapted to position the crystalline element (36) relative to a flow (18) of X-ray radiation generated by a radiation source (16) such that the crystalline element (36) reflects a monochromatic flow (12) of X-ray radiation according to Bragg's law. Finally, a corresponding calibration assembly (26), a method of obtaining a monochromatic flow (12) of X-ray radiation and methods of calibrating a detector element (42) of a detector (20) are described.

Abstract translation: 描述了基于X射线光子的检测，特别是用于医疗用途的成像装置（14）。 成像装置（14）包括用于产生X射线辐射流（18）的辐射源（16），用于检测X射线辐射的检测器（20），适于控制辐射源 （16），从所述检测器（20）读出信息并将所述信息处理成可视图像（24）;以及用于获得X射线辐射的单色流（12）的装置（10）。 此外，描述了一种装置（10），其包括定位装置（34）和安装在定位装置（34）上的结晶元件（36），其中定位装置（34）适于将结晶元件（36） ）相对于由辐射源（16）产生的X射线辐射的流（18），使得结晶元件（36）根据布拉格定律反射X射线辐射的单色流（12）。 最后，描述相应的校准组件（26），获得X射线辐射的单色流（12）的方法和校准检测器（20）的检测器元件（42）的方法。

公开(公告)号：WO2007057841A3

公开(公告)日：2007-05-24

申请号：PCT/IB2006/054246

申请日：2006-11-14

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  U.S. PHILIPS CORPORATION ,  ZEITLER, Guenter ,  HERRMANN, Christoph ,  ENGEL, Klaus J. ,  BAEUMER, Christian ,  ROESSL, Ewald ,  PROSKA, Roland

Inventor： ZEITLER, Guenter ,  HERRMANN, Christoph ,  ENGEL, Klaus J. ,  BAEUMER, Christian ,  ROESSL, Ewald ,  PROSKA, Roland

IPC: A61B6/03

Abstract: 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.

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

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS CORP ,  ZEITLER GUENTER ,  HERRMANN CHRISTOPH ,  ENGEL KLAUS J ,  BAEUMER CHRISTIAN ,  ROESSL EWALD ,  PROSKA ROLAND

Inventor： ZEITLER GUENTER ,  HERRMANN CHRISTOPH ,  ENGEL KLAUS J ,  BAEUMER CHRISTIAN ,  ROESSL EWALD ,  PROSKA ROLAND

IPC: A61B6/03

CPC classification number: A61B6/4241 ,  A61B6/032 ,  A61B6/482

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  ROESSL EWALD ,  PROKSA ROLAND

Inventor： ROESSL EWALD ,  PROKSA ROLAND

IPC: G01T1/24

CPC classification number: G01T1/24 ,  G01T1/241 ,  G01T1/247

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  ROESSL EWALD ,  KOEHLER THOMAS ,  THRAN AXEL

Inventor： ROESSL EWALD ,  KOEHLER THOMAS ,  THRAN AXEL

IPC: G06T11/00

CPC classification number: G06T11/003 ,  G06T11/006 ,  G06T2211/408 ,  G06T2211/424

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2012095713A1

公开(公告)日：2012-07-19

申请号：PCT/IB2011/056004

申请日：2011-12-29

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY AND STANDARDS GMBH ,  ROESSL, Ewald ,  KOEHLER, Thomas ,  THRAN, Axel

Inventor： ROESSL, Ewald ,  KOEHLER, Thomas ,  THRAN, Axel

IPC: G06T11/00

CPC classification number: G06T11/003 ,  G06T11/006 ,  G06T2211/408 ,  G06T2211/424

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2011070493A1

公开(公告)日：2011-06-16

申请号：PCT/IB2010/055571

申请日：2010-12-03

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  ROESSL, Ewald ,  ENGEL, Klaus J. ,  VOGTMEIER, Gereon ,  GELLER, Dieter

Inventor： ROESSL, Ewald ,  ENGEL, Klaus J. ,  VOGTMEIER, Gereon ,  GELLER, Dieter

IPC: A61B6/00 ,  G01N23/04

CPC classification number: A61B6/00 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4092 ,  A61B6/4291 ,  A61B6/484

Abstract: The present invention relates to X-ray image acquisition technology in general. Employing phase-contrast imaging for X-ray image acquisition may significantly enhance the quality and information content of images acquired. However, phase- contrast information may only be obtainable in a small detector region, possibly being too small for a sufficient field of view for specialized X-ray imaging applications. Accordingly, an apparatus for phase-contrast imaging is provided that may allow the acquisition of an enlarged field of view. According to the present invention an apparatus (1) for phase-contrast imaging is provided, comprising an X-ray source (2), an X-ray detector (12) element having a detector size, a beam splitter grating (8) and an analyzer grating (10). An object (6) is arrangeable between the X-ray source (2) and the X-ray detector (12). The beam splitter grating (8) and the analyzer grating (10) are arrangeable between the X-ray source (2) and the X-ray detector (12). X-ray source (2), the beam splitter grating (8), the analyzer grating (10) and the X-ray detector (12) are operatively coupled such that a phase-contrast image of the object (6) is obtainable. The apparatus (1) is adapted for acquiring a phase-contrast image having a field of view larger than the detector size. The X-ray detector element (12) is displaceable and by the displacement of the X-ray detector (12) a phase-contrast image of the field of view is obtainable.

Abstract translation: 本发明一般涉及X射线图像采集技术。 采用X射线图像获取的相位对比成像可以显着提高所获取图像的质量和信息含量。 然而，相位对比度信息可能只能在小的检测器区域中获得，对于专门的X射线成像应用而言，对于足够的视野可能太小。 因此，提供了一种用于相位对比成像的装置，其可以允许获取放大的视场。 根据本发明，提供了一种用于相位对比成像的装置（1），包括具有检测器尺寸的X射线源（2），X射线检测器（12）元件，分束器光栅（8）和 分析器光栅（10）。 物体（6）可布置在X射线源（2）和X射线检测器（12）之间。 分束器光栅（8）和分析器光栅（10）可布置在X射线源（2）和X射线检测器（12）之间。 X射线源（2），分束器光栅（8），分析器光栅（10）和X射线检测器（12）可操作地耦合，使得可以获得物体（6）的相差图像。 该装置（1）适于获取具有大于检测器尺寸的视场的相位对比度图像。 X射线检测器元件（12）可移动，并且通过X射线检测器（12）的移位，可以获得视场的相位对比图像。