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：WO2010015959A3

公开(公告)日：2010-11-04

申请号：PCT/IB2009053182

申请日：2009-07-22

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

Inventor： PROKSA ROLAND

IPC: G01T1/29

CPC classification number: G01T1/2928

Abstract: The present application relates to a combined anti-scatter grid, cathode, and carrier for a photon detector used in spectral CT imaging. The photon detector of the present application may include a cathode having at least one outwardly extending plate and at least one base plate, a substrate having at least one anode, and a converter material, such as for example, Cadmium Zinc Telluride ("CZT") or Cadmium Telluride. The at least one outwardly extending plate of the cathode may extend above the other detector components to act as an anti-scatter grid for the detector. Further, the at least one outwardly extending plate of the cathode may extend below the other detector components and be fixed to the at least one base plate of the detector. The converter material may be attached to at least one side of the at least one outwardly extending plate of the cathode.

Abstract translation: 本申请涉及用于光谱CT成像中的光子探测器的组合式反散射栅格，阴极和载体。 本申请的光子探测器可以包括具有至少一个向外延伸的板和至少一个基板的阴极，具有至少一个阳极的基板和转换器材料，例如碲化镉锌（“CZT” ）或碲化镉。 阴极的至少一个向外延伸的板可以在其他检测器组件上方延伸，以用作检测器的防散射栅。 此外，阴极的至少一个向外延伸的板可以在其他检测器组件下方延伸并且被固定到检测器的至少一个基板。 转换器材料可以附着到阴极的至少一个向外延伸板的至少一侧。

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

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  LIVNE AMIR ,  WAINER NAOR ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD ,  PROKSA ROLAND

Inventor： LIVNE AMIR ,  WAINER NAOR ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD ,  PROKSA ROLAND

IPC: G01N23/00 ,  A61B6/00 ,  G01T7/00

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：WO2008149292A3

公开(公告)日：2009-06-25

申请号：PCT/IB2008052170

申请日：2008-06-04

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  PROKSA ROLAND ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD

Inventor： PROKSA ROLAND ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD

IPC: G01T1/164

CPC classification number: G01T1/1648

Abstract: The present invention relates to a detection device for detecting radiation emitted from a radiation source, wherein the detection device (6) comprises a detection surface (19) and lamellae (18) protruding from the detection surface (19), wherein the lamellae (18) comprise a first end portion (20) close to the detection surface (19) and a second end portion (21) remote from the detection surface (19) and wherein the first end portion (20) has a larger width than the second end portion (21). The invention relates further to a computed tomography apparatus comprising this detection device.

Abstract translation: 本发明涉及一种用于检测从辐射源发射的辐射的检测装置，其中检测装置（6）包括从检测表面（19）突出的检测表面（19）和薄片（18），其中薄片（18） ）包括靠近检测表面（19）的第一端部（20）和远离检测表面（19）的第二端部（21），并且其中第一端部（20）的宽度大于第二端 部分（21）。 本发明进一步涉及包括该检测装置的计算机断层摄影装置。

公开(公告)号：WO2007034356A3

公开(公告)日：2008-11-06

申请号：PCT/IB2006053223

申请日：2006-09-12

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

Inventor： PROKSA ROLAND

IPC: A61B6/03

CPC classification number: A61B6/4241 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4042 ,  A61B6/482 ,  A61B6/507 ,  A61B6/583 ,  G06T11/006 ,  G06T2211/408

Abstract: The present invention relates to a CT imaging system for imaging a substance, such as a contrast agent, present an object of interest, such as a patient. To provide a CT imaging system that involves limited technical efforts and costs but leads to a contrast enhancement and allows the imaging of a substance in object of interest, a CT imaging system is proposed comprising: a polychromatic X-ray source (2) for emitting polychromatic X-ray radiation (4), an energy-resolving X-ray detector (6) for detecting that X-ray radiation (4) after passing through said object and for providing a plurality of energy-resolved detection signals (d i ) for a plurality of energy bins (b i ), a calculation unit (12) for determining the k-edge component (k) of said substance by solving a system of equations for said plurality of energy-resolved detection signals (d i ), using a model for said detection signals (d i ) describing a detection signal as a combination of the k-edge effect of said substance, the photo-electric effect and the Compton effect, each effect contributing with a corresponding component (p, c, k) to said detection signal, and a reconstruction unit (13) for reconstructing a k-edge image of said substance from the calculated k-edge components (k) of said substance obtained for different detector positions. The invention relates further to a corresponding image processing device and method.

Abstract translation: 本发明涉及一种CT成像系统，用于成像诸如造影剂的物质，呈现感兴趣的对象，例如患者。 为了提供一种CT成像系统，其涉及有限的技术努力和成本，但是导致对比度增强并且允许对感兴趣对象物质进行成像，提出了一种CT成像系统，包括：用于发射的多色X射线源（2） 多色X射线辐射（4），用于在通过所述物体之后检测X射线辐射（4）并用于提供多个能量分辨检测信号的能量分辨X射线检测器（6）（d

公开(公告)号：WO2008075244A3

公开(公告)日：2008-08-14

申请号：PCT/IB2007054980

申请日：2007-12-10

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

Inventor： PROKSA ROLAND

IPC: A61B6/03 ,  A61B6/04

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/5264

Abstract: The invention relates to an imaging system for imaging an object (14) in an examination zone (5). The imaging system co mprises a radiation source emanating radiation for illuminating the examination zone (5), a detection unit for generating detection values depending on the radiation after having passed the examination zone (5) and a moving unit for moving the 5 radiation source and the examination zone relative to each other along a first trajectory (15) und along a second trajectory (16). The position of at least one of the first trajectory (15) and of the second trajectory (16) with respect to the object is determined by a determination unit. The imaging system further comprises a reconstruction unit for reconstructing an image of the object (14) from the detection values using the determined position of the at least one of 10 the first trajectory (15) and the second trajectory (16).

Abstract translation: 成像系统技术领域本发明涉及用于对检查区域（5）中的对象（14）成像的成像系统。 成像系统包括用于照射检查区域（5）的辐射源发射辐射，用于在通过检查区域（5）之后根据辐射产生检测值的检测单元，以及用于移动辐射源的移动单元，以及 所述检查区域沿着第一轨迹（15）并且沿着第二轨迹（16）相对于彼此。 由确定单元确定第一轨迹（15）和第二轨迹（16）中的至少一个相对于对象的位置。 成像系统还包括重建单元，用于使用第一轨迹（15）和第二轨迹（16）中的至少一个的所确定的位置从检测值重建对象（14）的图像。

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

Applicant: 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

Inventor： ENGEL KLAUS J ,  ZEITLER GUENTER ,  BAEUMER CHRISTIAN ,  HERRMANN CHRISTOPH ,  WIEGERT JENS ,  PROKSA ROLAND ,  ROESSL EWALD ,  STEADMAN BOOKER ROGER

IPC: G01T1/29

CPC classification number: G01T1/2928

Abstract: 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).

Abstract translation: 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。

公开(公告)号：WO2007004196A3

公开(公告)日：2007-05-03

申请号：PCT/IB2006052248

申请日：2006-07-04

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  KOEHLER THOMAS ,  BONTUS CLAAS ,  PROKSA ROLAND

Inventor： KOEHLER THOMAS ,  BONTUS CLAAS ,  PROKSA ROLAND

IPC: A61B6/03 ,  G01N23/04 ,  G06T11/00

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/4085 ,  G06T11/006 ,  G06T2211/416 ,  G06T2211/421

Abstract: Exact methods of FBP reconstruction may have the restriction that the object point to be reconstructed and the first and last source position used for back- projection must lie on a line. According to an exemplary embodiment of the present invention, a method of FBP reconstruction is provided, comprising a filtering of the projection data along a projected M-line and a back-projecting of the filtered projection data over an interval larger than the PI interval of the object point. This may provide for an exact FBP type algorithm for arbitrary trajectories.

Abstract translation: FBP重建的精确方法可能具有要重构的对象点的限制，并且用于反投影的第一和最后一个源位置必须位于一行上。 根据本发明的示例性实施例，提供了一种FBP重构的方法，包括沿着投影M线对投影数据进行滤波，并且在大于PI间隔的间隔上对经过滤的投影数据进行反投影 对象点。 这可以为任意轨迹提供精确的FBP类型算法。

公开(公告)号：WO2004111945A3

公开(公告)日：2005-05-12

申请号：PCT/IB2004050845

申请日：2004-06-07

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  KOEHLER THOMAS ,  PROKSA ROLAND

Inventor： KOEHLER THOMAS ,  PROKSA ROLAND

IPC: G06T11/00

CPC classification number: G06T11/006 ,  A61B6/027 ,  G06T2211/416

Abstract: The invention relates to a computer tomography method in which a radiation source moves relative to an examination region along, in particular, a helical or circular trajectory. Measured values are acquired by a detector unit and a CT image of the examination region is reconstructed from these measured values. In the reconstruction, a complementary measured value, whose ray is oriented parallel to the ray of the respective measured value that has been acquired but in the opposite direction thereto, is determined for each of at least some measured values that lie within a reconstruction window. Redundant measured values are used to calculate the complementary measured values, with the help in particular of John's equation. The measured values for which complementary measured values have been determined are each replaced by a sum comprised a measured value that has been weighted and a complementary measured value that has been weighted, and a CT image is reconstructed, in particular by an exact method of reconstruction, from the replacement measured values, and where appropriate from acquired measured values, that lie within the reconstruction window.

Abstract translation: 本发明涉及一种计算机断层摄影方法，其中辐射源相对于沿着特别是螺旋或圆形轨迹的检查区域移动。 通过检测器单元获取测量值，并从这些测量值重建检查区域的CT图像。 在重建中，对于位于重建窗口内的至少一些测量值中的每一个确定其光线平行于已经获取但与其相反方向的相应测量值的射线的互补测量值。 冗余测量值用于计算补充测量值，特别是约翰方程式的帮助。 已经确定了互补测量值的测量值各自被包括被加权的测量值和已经加权的测量值和重建CT图像的和，特别是通过重建的精确方法 ，从替换测量值，并在适当时从获得的测量值，位于重建窗口内。

公开(公告)号：WO02073174A3

公开(公告)日：2003-02-06

申请号：PCT/IB0200697

申请日：2002-03-08

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  GRASS MICHAEL ,  KOEHLER THOMAS ,  PROKSA ROLAND

Inventor： GRASS MICHAEL ,  KOEHLER THOMAS ,  PROKSA ROLAND

IPC: A61B6/03 ,  G01N23/04 ,  G06T11/00

CPC classification number: G01N23/046 ,  A61B6/027 ,  G01N2223/419

Abstract: The invention relates to a computed tomography method for forming images of an object to be examined which is arranged in an examination zone. The examination zone is scanned by means of a conical X-ray beam. In order to enable images having a high image quality to be formed from a selected imaging zone while making an as small as possible computational effort, the invention proposes the following steps: a) selecting an imaging zone of the object to be examined, b) determining the sub-regions of the X-ray detector on which the imaging zone of the object to be examined is projected during the acquisition of the projection data, c) forming sub-projection data by selecting the projection data associated with the sub-regions from the acquired projection data, and d) reconstructing the desired image from the sub-projection data by backprojection.

Abstract translation: 本发明涉及一种用于形成布置在检查区中的被检查物体的图像的计算机断层摄影方法。 检查区域通过锥形X射线束扫描。 本发明提供以下步骤：a）选择待检查对象的成像区域，b）为了使所选择的成像区域能够形成具有高图像质量的图像， 确定在获取投影数据期间投影被检查物体的成像区域的X射线检测器的子区域，c）通过选择与子区域相关联的投影数据来形成子投影数据 并且d）通过反投影从副投影数据重建所需图像。