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    SPECTRAL CT
    2.
    发明申请
    SPECTRAL CT 审中-公开
    光谱CT

    公开(公告)号：WO2010001281A1

    公开(公告)日：2010-01-07

    申请号：PCT/IB2009/052300

    申请日：2009-06-01

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  FORTHMANN, Peter ,  VAN STEVENDAAL, Udo ,  ROESSL, Ewald ,  GRASS, Michael ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter

    Inventor： FORTHMANN, Peter ,  VAN STEVENDAAL, Udo ,  ROESSL, Ewald ,  GRASS, Michael ,  PROKSA, Roland ,  SCHLOMKA, Jens-Peter

    IPC: A61B6/03 ,  G01T1/20 ,  H05G1/60

    CPC classification number: A61B6/405 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4241 ,  A61B6/482

    Abstract: An imaging system includes a radiation source (106, T1, T2, T3) that rotates about an examination region and emits radiation that traverses the examination region. The radiation source (106, T1, T2, T3) emits radiation having an energy spectrum that is selectively alternately switched between at least two different energy spectra during an imaging procedure. The system further includes an energy-resolving detector array (116, D1, D2, D3) that detects radiation traversing the examination region. The energy-resolving detector array (116, D1, D2, D3) resolves the detected radiation over at least two different energy ranges and produces energy-resolved output signals as a function of both emission energy spectrum and energy range. The system further includes a reconstructor (126) that performs a spectral reconstruction of the energy-resolved output signals. In another embodiment, the detector array (116) includes a photon-counting detector array (116).

    Abstract translation: 成像系统包括围绕检查区域旋转并且发射穿过检查区域的辐射的辐射源（106，T1，T2，T3）。 辐射源（106，T1，T2，T3）发射具有在成像过程期间在至少两个不同能量谱之间选择性交替切换的能谱的辐射。 该系统还包括检测穿过检查区域的辐射的能量分辨检测器阵列（116，D1，D2，D3）。 能量分辨检测器阵列（116，D1，D2，D3）通过至少两个不同的能量范围来解析检测到的辐射，并且产生作为发射能量谱和能量范围的函数的能量分辨的输出信号。 该系统还包括执行能量分辨输出信号的频谱重建的重建器（126）。 在另一个实施例中，检测器阵列（116）包括光子计数检测器阵列（116）。

    DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS
    3.
    发明申请
    DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS 审中-公开
    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

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

    Inventor： PROKSA ROLAND ,  SCHLOMKA JENS-PETER ,  ROESSL EWALD ,  LIRAN TUVIA ,  MARKS AVIV

    IPC: G01T1/17

    CPC classification number: G01T1/171

    Abstract: 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.

    Abstract translation: 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。

    DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS
    4.
    发明申请
    DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS 审中-公开
    用于多光子计数读数电路的数字脉冲处理

    公开(公告)号：WO2008155679A2

    公开(公告)日：2008-12-24

    申请号：PCT/IB2008/052042

    申请日：2008-05-23

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

    Inventor： PROKSA, Roland ,  SCHLOMKA, Jens-Peter ,  ROESSL, Ewald ,  LIRAN, Tuvia ,  MARKS, Aviv

    IPC: G01T1/17

    CPC classification number: G01T1/171

    Abstract: 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.

    Abstract translation: 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。

    COHERENT-SCATTER COMPUTER TOMOGRAPH
    7.
    发明申请
    COHERENT-SCATTER COMPUTER TOMOGRAPH 审中-公开
    相干散热器计算机图形

    公开(公告)号：WO2005120354A1

    公开(公告)日：2005-12-22

    申请号：PCT/IB2005/051786

    申请日：2005-06-01

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

    Inventor： SCHLOMKA, Jens-Peter

    IPC: A61B6/02

    CPC classification number: A61B6/032 ,  A61B6/06 ,  A61B6/4291 ,  A61B6/483 ,  G01N23/201

    Abstract: Conventional CSCT may require a complex reconstruction involving a large number of calculations. According to an exemplary embodiment of the present invention, additional collimators are used in combination with energy revolving detectors, which may allow that a CSCT image may be reconstructed by a simple superposition of images obtained from different viewing angles in a direct tomography data acquisition scheme. Advantageously, a reconstruction may be avoided. Advantageously, this may allow for an improved image quality while reducing an amount of calculations required for generating the output image.

    Abstract translation: 常规CSCT可能需要涉及大量计算的复杂重构。 根据本发明的示例性实施例，附加的准直器与能量循环检测器组合使用，这可以允许通过在直接层析成像数据采集方案中从不同视角获得的图像的简单叠加来重构CSCT图像。 有利地，可以避免重建。 有利地，这可以允许改善图像质量，同时减少生成输出图像所需的计算量。

    BEAM-HARDENING AND ATTENUATION CORRECTION FOR COHERENT-SCATTER CT
    8.
    发明申请
    BEAM-HARDENING AND ATTENUATION CORRECTION FOR COHERENT-SCATTER CT 审中-公开
    光束加强和衰减校正CT

    公开(公告)号：WO2005091225A1

    公开(公告)日：2005-09-29

    申请号：PCT/IB2005/050904

    申请日：2005-03-15

    Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N. V. ,  VAN STEVENDAAL, Udo ,  SCHLOMKA, Jens-Peter

    Inventor： VAN STEVENDAAL, Udo ,  SCHLOMKA, Jens-Peter

    IPC: G06T11/00

    CPC classification number: G01T1/1647 ,  A61B6/032 ,  A61B6/483 ,  A61B6/505 ,  G06T11/005

    Abstract: In CSCT, an exact reconstruction of a scattering function for each voxel is not known for polychromatic primary radiation. According to an exemplary embodiment of the present invention, a beam hardening compensation is performed prior to reconstruction allowing to perform a quasi-exact reconstruction on the basis of the primary radiation mean attenuation values are determined, from which an equivalent water thickness is derived. From the equivalent water thickness an energy shift is calculated, which is used to correct the initial mean energy of the scatter radiation. Furthermore, a CT reconstruction may be performed prior to a CSCT reconstruction allowing for a beam-hardening correction. Advantageously, this may allow for an improved image quality and an improved resolution of the scatter function.

    Abstract translation: 在CSCT中，对于多色初级辐射，每个体素的散射函数的精确重建是未知的。 根据本发明的示例性实施例，在重建之前执行光束硬化补偿，允许基于确定主要辐射平均衰减值来执行准精确重建，从其导出等效的水厚度。 从等效水厚度计算能量偏移，用于校正散射辐射的初始平均能量。 此外，可以在允许进行光束硬化校正的CSCT重建之前执行CT重建。 有利地，这可以允许改进的图像质量和改进的散射函数分辨率。

    SYSTEM AND METHOD FOR ACQUIRING IMAGE DATA
    9.
    发明申请
    SYSTEM AND METHOD FOR ACQUIRING IMAGE DATA 审中-公开
    用于获取图像数据的系统和方法

    公开(公告)号：WO2008018021A3

    公开(公告)日：2008-08-14

    申请号：PCT/IB2007053111

    申请日：2007-08-07

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  SCHLOMKA JENS-PETER ,  THRAN AXEL

    Inventor： SCHLOMKA JENS-PETER ,  THRAN AXEL

    IPC: G01V5/00 ,  G01T1/164

    CPC classification number: G01V5/0025 ,  G01T1/1644 ,  G01V5/005

    Abstract: According to an exemplary embodiment an imaging system (100) for examining an object under examination comprises a scanning unit, wherein the scanning unit comprises a radiation source (106, 108), and a detection unit (107, 109), wherein the scanning unit is adapted to emit a radiation beam (123), which radiation beam follows a linear movement of the object under examination such that a predetermined region of the object under examination is scanned while the object under examination moves.

    Abstract translation: 根据示例性实施例，用于检查被检查物体的成像系统（100）包括扫描单元，其中所述扫描单元包括辐射源（106,108）和检测单元（107,109），其中所述扫描单元 适于发射辐射束（123），该辐射束遵循检查对象的线性运动，使得被检查对象的被检查物体的预定区域被扫描，同时被检查物体移动。

    SYSTEM AND METHOD FOR ACQUIRING IMAGE DATA
    10.
    发明申请
    SYSTEM AND METHOD FOR ACQUIRING IMAGE DATA 审中-公开
    用于获取图像数据的系统和方法

    公开(公告)号：WO2008018021A2

    公开(公告)日：2008-02-14

    申请号：PCT/IB2007/053111

    申请日：2007-08-07

    Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N.V., ,  SCHLOMKA, Jens-Peter ,  THRAN, Axel

    Inventor： SCHLOMKA, Jens-Peter ,  THRAN, Axel

    CPC classification number: G01V5/0025 ,  G01T1/1644 ,  G01V5/005

    Abstract: According to an exemplary embodiment an imaging system (100) for examining an object under examination comprises a scanning unit, wherein the scanning unit comprises a radiation source (106, 108), and a detection unit (107, 109), wherein the scanning unit is adapted to emit a radiation beam (123), which radiation beam follows a linear movement of the object under examination such that a predetermined region of the object under examination is scanned while the object under examination moves.

    Abstract translation: 根据示例性实施例，用于检查被检查对象的成像系统（100）包括扫描单元，其中扫描单元包括辐射源（106,108）和检测单元（107 ，109），其中所述扫描单元适于发射辐射束（123），所述辐射束跟随被检查对象的线性运动，使得在被检查对象移动的同时扫描被检查对象的预定区域。

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