公开(公告)号：WO2006000997A3

公开(公告)日：2007-04-26

申请号：PCT/IB2005052090

申请日：2005-06-24

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  NIELSEN TIM ,  ZIEGLER ANDY ,  KOEHLER THOMAS ,  PROKSA ROLAND

Inventor： NIELSEN TIM ,  ZIEGLER ANDY ,  KOEHLER THOMAS ,  PROKSA ROLAND

IPC: G06T11/00

CPC classification number: G06T11/006 ,  A61B6/027 ,  G06T2211/421 ,  Y10S378/901

Abstract: The invention relates to an imaging method, especially a computerized tomography method, with which an object is penetrated by rays from different directions and measured values, which depend upon the intensity of the rays after penetrating the object, are acquired by a detector unit. From these measured values, an object image is reconstructed by means of back projection of measured-value-dependent back projection values. Therein, the object image is divided into overlapping, quasi-spherically symmetric image segments, each being defined by an image value and a quasi-spherically symmetric base function. Furthermore, during the back projection, the back projection values are added in proportions to the image values, wherein the proportion of a back projection value, which is added during the back projection to an image value, is dependent on a proportionality factor, which is equal to the average value of the line integrals of the base function belonging to the respective image value along those rays that have generated the measured value, on which the respective back projection value is dependent.

Abstract translation: 本发明涉及一种成像方法，特别是计算机断层摄影方法，其中物体被来自不同方向的光线穿透，并且测量值取决于穿透物体之后的光线的强度，由检测器单元获取。 从这些测量值，通过背投影测量值依赖的反投影值重建对象图像。 其中，对象图像被划分为重叠的准球形对称图像片段，每个片段由图像值和准球形对称的基本功能定义。 此外，在背投影期间，反投影值以与图像值成比例的方式相加，其中在后投影中添加的反投影值与图像值的比例取决于比例因子，即比例因子 等于属于相应图像值的基本功能的线积分的平均值，沿着相应的背投影值依赖于已经产生测量值的那些射线。

公开(公告)号：WO2013084106A3

公开(公告)日：2013-11-21

申请号：PCT/IB2012056684

申请日：2012-11-23

Applicant: KONINKL PHILIPS NV ,  PHILIPS INTELLECTUAL PROPERTY

Inventor： RONDA CORNELIS REINDER ,  PROKSA ROLAND ,  THRAN AXEL

IPC: G01T1/20 ,  G01T1/202

CPC classification number: G01T1/2002 ,  G01N23/04 ,  G01T1/2006 ,  G01T1/2018 ,  G01T1/202

Abstract: The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises a GOS material (20) for generating scintillation light depending on the detected radiation (25), an optical filter (24) for reducing the intensity of a part of the scintillation light having a wavelength being larger than 650 nm, and a detection unit (21) for detecting the filtered scintillation light. Because of the filtering procedure relatively slow components, i.e. components corresponding to a relatively large decay time, of the scintillation light weakly constribute to the detection process or are not detected at all by the detection unit, thereby increasing the temporal resolution of the detection apparatus. The resulting fast detection apparatus can be suitable for kVp-switching computed tomography systems.

Abstract translation: 本发明涉及一种用于检测辐射的检测装置。 检测装置包括用于根据检测到的辐射（25）产生闪烁光的GOS材料（20），用于降低波长大于650nm的闪烁光的一部分的强度的滤光器（24），以及 用于检测滤波的闪烁光的检测单元（21）。 由于滤波过程，相对较慢的分量，即对应于较大衰减时间的分量，闪烁光弱地对于检测处理有贡献，或者根本不被检测单元检测，从而增加了检测装置的时间分辨率。 所得到的快速检测装置可适用于kVp切换计算机断层摄影系统。

公开(公告)号：WO2013080104A2

公开(公告)日：2013-06-06

申请号：PCT/IB2012056663

申请日：2012-11-23

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY

Inventor： ROESSL EWALD ,  THRAN AXEL ,  PROKSA ROLAND

CPC classification number: G01T1/20 ,  G01T1/2008

Abstract: Detection apparatus for detecting radiation The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises at least two scintillators (14, 15) having different temporal behaviors, each generating scintillation light upon reception of radiation, wherein the generated scintillation light is commonly detected by a scintillation light detection unit (16), thereby generating a common light detection signal. A detection values determining unit determines first detection values by applying a first determination process and second detection values by applying a second determination process, which is different to the first determination process, on the detection signal. The first determination process includes frequency filtering the detection signal. Since the scintillation light of the different scintilla- tors is collectively detected by the same scintillation light detection unit, detection arrangements with, for example, side-looking photodiodes for separately detecting the different scintillation light of the different scintillators are not necessarily required, thereby reducing the technical complexity of the detection apparatus.

Abstract translation: 用于检测辐射的检测装置技术领域本发明涉及一种用于检测辐射的检测装置。 检测装置包括具有不同时间行为的至少两个闪烁体（14,15），每个闪烁体在接收到辐射时产生闪烁光，其中所产生的闪烁光通常由闪烁光检测单元（16）检测，从而产生公共光 检测信号。 检测值确定单元通过对检测信号应用与第一确定处理不同的第二确定处理来应用第一确定处理和第二检测值来确定第一检测值。 第一确定处理包括对检测信号进行频率滤波。 由于不同的闪烁体的闪烁光被同一个闪烁光检测单元共同检测，所以不一定需要与用于分别检测不同的闪烁体的不同的闪烁光的例如侧视光电二极管的检测装置，从而减少 检测装置的技术复杂性。

公开(公告)号：WO2009141760A3

公开(公告)日：2010-07-29

申请号：PCT/IB2009051954

申请日：2009-05-12

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

Inventor： ROESSL EWALD R ,  PROKSA ROLAND

IPC: G01T1/24

CPC classification number: G01T1/24

Abstract: The invention relates to a detector (100), particularly for X-ray photons, that comprises a converter unit (10) in which incident photons (X) are converted into electrical conduction charges (11) and electrodes (21, 22) that generate an electrical field and at which said charges (11) are collected. Furthermore, it comprises a magnetic field generator (30) for generating a magnetic field (B) inside the converter unit (10) that affects the movement of the electrical conduction charges (11), particularly by restricting possible drifts of the charges in directions perpendicular to the electrical field (E).

Abstract translation: 本发明涉及特别是用于X射线光子的检测器（100），其包括转换器单元（10），其中入射光子（X）转换成导电电荷（11）和电极（21,22），其产生 电场并且收集所述电荷（11）。 此外，它包括用于在转换器单元（10）内产生影响导电电荷（11）的运动的磁场（B）的磁场发生器（30），特别是通过限制电荷在垂直方向上的漂移 到电场（E）。

公开(公告)号：WO2009156898A3

公开(公告)日：2010-04-22

申请号：PCT/IB2009052562

申请日：2009-06-17

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

Inventor： PROKSA ROLAND

IPC: A61B6/03 ,  A61B6/00 ,  G21K1/06

CPC classification number: A61B6/4035 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4042 ,  A61B6/4241 ,  A61B6/481 ,  A61B6/482 ,  A61B6/504 ,  A61B6/507 ,  A61B6/583 ,  G21K2201/062 ,  G21K2201/064

Abstract: The present invention relates to a medical X-rayexamination apparatus and method for performing k-edge imaging of an object of interest including material showing k- edge absorption. To allow the use of conventional detector technology, which does not suffer from the limitation to provide very high k-rate capabilities a method is proposed comprising the steps of: -emitting polychromatic X-ray radiation (4; 4a, 4b), -Bragg filtering said polychromatic X-rayradiation by a Bragg filter such that radiation (16) transmitted through said Bragg filter (14; 14a, 14b) passes through said object (5), -detecting X-rayradiation after passing through said object (5), -acquiring projection data at at least two different Bragg reflection angles of said Bragg filter (14; 14a, 14b), and -reconstructing a k-edge image from the acquired projection data.

Abstract translation: 本发明涉及一种医用X射线检查装置和方法，用于进行感兴趣对象的k边缘成像，包括显示k边缘吸收的材料。 为了允许使用常规检测器技术，其不受限于提供非常高的k率能力的方法，提出了一种方法，其包括以下步骤： - 发射多色X射线辐射（4; 4a，4b），-Bragg 通过布拉格滤波器对所述多色X射线辐射进行滤波，使得透过所述布拉格滤波器（14; 14a，14b）的辐射（16）穿过所述物体（5）， - 在通过所述物体（5）之后检测X射线辐射， - 在所述布拉格滤波器（14; 14a，14b）的至少两个不同的布拉格反射角处获取投影数据，以及 - 从所获取的投影数据重新构造k边缘图像。

公开(公告)号：WO2008129474A3

公开(公告)日：2010-04-08

申请号：PCT/IB2008051471

申请日：2008-04-17

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

Inventor： PROKSA ROLAND

IPC: G06T11/00

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

Abstract: The invention relates to an imaging system for imaging a region of interest from energy-dependent projection data, wherein the imaging system comprises a projection data providing unit (1, 2, 3, 6, 7, 8) for providing energy-dependent first projection data of the region of interest. The imaging system comprises further an attenuation component image generation unit (12) for generating attenuation component images of the region of interest by generating energy-dependent second projection data using a model in which the projection data depend on attenuation component images. The component image generation unit (12) is adapted for generating the attenuation component images such that deviations of the second projection data from the first projection data are reduced.

Abstract translation: 本发明涉及一种用于从能量相关投影数据对感兴趣区域成像的成像系统，其中成像系统包括投影数据提供单元（1,2,3,6,7,8），用于提供能量依赖的第一投影 感兴趣区域的数据。 成像系统还包括衰减分量图像生成单元（12），用于通过使用其中投影数据取决于衰减分量图像的模型来生成依赖于能量的第二投影数据来产生感兴趣区域的衰减分量图像。 分量图像生成单元（12）适于生成衰减分量图像，使得第二投影数据与第一投影数据的偏差减小。

公开(公告)号：WO2008050298A3

公开(公告)日：2008-07-10

申请号：PCT/IB2007054315

申请日：2007-10-24

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

Inventor： PROKSA ROLAND

IPC: G01T1/29

CPC classification number: G01T1/2985 ,  A61B6/4241 ,  A61B6/482 ,  Y10S378/901

Abstract: The present invention relates to an imaging system for imaging an object (20) comprising a polychromatic radiation source (2) and an energy resolving radiation detector (6). The imaging system comprises further a driving device for moving the object (20) and the radiation source (2) relatively to each other, in order to acquire truncated projections from different directions. A calculation unit determines a k-edge component at least of one of the object (20) and a substance within the object (20) from the truncated projections and determines non-truncated projections from the determined k-edge component. A reconstruction unit constructs the object using the non-truncated projections.

Abstract translation: 本发明涉及一种用于对包括多色辐射源（2）和能量分辨辐射检测器（6）的物体成像的成像系统。 成像系统还包括用于相对于彼此移动物体（20）和辐射源（2）的驱动装置，以便从不同方向获取截顶投影。 计算单元从截断的投影中确定物体（20）和物体（20）内的物质中的至少一个的k边缘分量，并且从确定的k边缘分量确定非截断的投影。 重建单元使用非截断投影构造对象。

公开(公告)号：WO2006097867A8

公开(公告)日：2008-05-29

申请号：PCT/IB2006050699

申请日：2006-03-07

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

Inventor： ZIEGLER ANDY ,  KOEHLER THOMAS ,  PROKSA ROLAND

IPC: G06T11/00

CPC classification number: G06T11/006 ,  G06T2211/424

公开(公告)号：WO2005008597A3

公开(公告)日：2005-08-25

申请号：PCT/IB2004051150

申请日：2004-07-07

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

Inventor： KOEHLER THOMAS ,  GRASS MICHAEL ,  KUHN MICHAEL HARALD ,  PROKSA ROLAND

IPC: G06T7/20 ,  G06T11/00

CPC classification number: G06T7/20 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2211/404 ,  G06T2211/412

Abstract: In the CT imaging of non-homogeneously moving objects such as the heart or the coronary vessel tree, there is a problem that different parts of the objects are at rest at different points in time. Thus, a gated reconstruction with a globally selected time point does not yield a sharp image of such objects. According to the present invention, a motion of the object is estimated, describing the motion of selected regions of these objects. Then, on the basis of the estimated motion, time points are determined, where these areas have minimal motion. Then, an image is reconstructed, wherein the data from which the respective regions are reconstructed, correspond to the respective time points, where the regions have minimal motion. Due to this, an improved image qualify maybe provided.

Abstract translation: 在诸如心脏或冠状血管树之类的非均匀运动物体的CT成像中，存在不同部分的物体在不同时间点处于静止状态的问题。 因此，具有全局选择的时间点的门控重构不会产生这样的对象的清晰图像。 根据本发明，估计对象的运动，描述这些对象的选定区域的运动。 然后，在估计运动的基础上，确定这些区域具有最小运动的时间点。 然后，重建图像，其中各个区域被重构的数据对应于各个时间点，其中区域具有最小的运动。 因此，可以提供改进的图像资格。

公开(公告)号：WO2013144754A2

公开(公告)日：2013-10-03

申请号：PCT/IB2013051859

申请日：2013-03-08

Applicant: KONINKL PHILIPS NV ,  PHILIPS INTELLECTUAL PROPERTY

Inventor： PROKSA ROLAND ,  STEADMAN BOOKER ROGER

IPC: G01T1/17

CPC classification number: G01T1/171 ,  G01T1/1606

Abstract: An imaging system (100) includes a radiation source (108) that emits radiation that traverses an examination region,a paralyzable photon counting detector pixel (110) that detects photons traversing the examination region and arriving at an input photon rate and that generates a signal indicative thereof, high flux electronics (122) that produce a total time over threshold value each integration period based on the signal, a reconstruction parameter identifier (124) that estimates the input photon rate based on the total time over threshold value and identifies a reconstruction parameter based on the estimate, and a reconstructor (130) that reconstructs the signal based on the identified reconstruction parameter.

Abstract translation: 成像系统（100）包括发射穿过检查区域的辐射的辐射源（108），用于检测穿过检查区域并达到输入光子速率并产生信号的信号的可分析光子计数检测器像素（110） 基于该信号，每个积分周期产生超过阈值的总时间的高通量电子器件122;基于超过阈值的总时间估计输入光子速率的重构参数标识符（124），并识别重建 基于所述估计的参数，以及基于所识别的重建参数重构所述信号的重建器（130）。