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1. 发明申请

WO2003085390A2 COMPUTED TOMOGRAPHY METHOD 审中-公开
标题翻译：计算机测图法
公开(公告)号：WO2003085390A2
公开(公告)日：2003-10-16
申请号：PCT/IB2003/001284
申请日：2003-04-09
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , GRASS, Michael , KOEHLER, Thomas , PROKSA, Roland
发明人： GRASS, Michael , KOEHLER, Thomas , PROKSA, Roland
IPC分类号： G01N23/00
CPC分类号： A61B6/032 , A61B6/027 , G01N23/046 , G01N2223/419 , G06T11/005 , Y10S378/901
摘要： The invention relates to a computed tomography method in which a rebinning operation is carried out so as to form parallel fan beams whose rays traverse a plane, containing the axis of rotation, in equidistant puncture points. Reconstruction is performed for rays which extend perpendicularly to said planes. Such a transition from a cone beam geometry to a parallel beam geometry enables very fast reconstruction which can be carried out notably for CT fluoroscopy.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中进行重组操作以形成平行扇形束，其平行扇形束横穿包含旋转轴线的平面在等距穿刺点中。对垂直于所述平面延伸的射线进行重建。从锥形束几何形状到平行光束几何形状的这种过渡使得能够非常快速地重建，这可以用于CT荧光透视。

2. 发明申请

WO2003085390A3 COMPUTED TOMOGRAPHY METHOD 审中-公开
公开(公告)号：WO2003085390A3
公开(公告)日：2003-10-16
申请号：PCT/IB2003/001284
申请日：2003-04-09
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , GRASS, Michael , KOEHLER, Thomas , PROKSA, Roland
发明人： GRASS, Michael , KOEHLER, Thomas , PROKSA, Roland
IPC分类号： G01N23/04
摘要： The invention relates to a computed tomography method in which a rebinning operation is carried out so as to form parallel fan beams whose rays traverse a plane, containing the axis of rotation, in equidistant puncture points. Reconstruction is performed for rays which extend perpendicularly to said planes. Such a transition from a cone beam geometry to a parallel beam geometry enables very fast reconstruction which can be carried out notably for CT fluoroscopy.

3. 发明申请

WO2011073863A1 COMPUTED TOMOGRAPHY APPARATUS 审中-公开
标题翻译：计算机图像设备
公开(公告)号：WO2011073863A1
公开(公告)日：2011-06-23
申请号：PCT/IB2010/055712
申请日：2010-12-10
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , PROKSA, Roland , ROESSL, Ewald
发明人： KOEHLER, Thomas , PROKSA, Roland , ROESSL, Ewald
IPC分类号： A61B6/03 , G01N23/04 , G06T11/00
CPC分类号： A61B6/032 , A61B6/469 , A61B6/542 , G01N23/046 , G01N2223/419 , G06T11/005 , Y10S378/901
摘要： The invention relates to a computed tomography apparatus for imaging an object. The computed tomography apparatus comprises a radiation source (2) for generating modulated radiation (4) traversing the object and a detector (6) for generating detection values depending on the radiation (4) after having traversed the object, while the radiation source (2) and the object are moved relative to each other. A weight providing unit (14) provides modulation weights for weighting the detection values depending on the modulation of the radiation (4) and a reconstruction unit (15) reconstructs an image of the object, wherein the detection values are weighted based on the provided modulation weights and an image of the object is reconstructed from the weighted detection values. This can allow to optimize the dose application to the object by modulating the radiation accordingly, wherein the reconstructed images still have a high quality.
摘要翻译：本发明涉及一种用于对物体成像的计算机断层摄影装置。计算机断层摄影装置包括用于产生经过物体的调制辐射（4）的辐射源（2）和用于在穿过物体之后产生取决于辐射（4）的检测值的检测器（6），而辐射源）并且对象相对于彼此移动。权重提供单元（14）提供调制权重，用于根据辐射（4）的调制对检测值进行加权，重建单元（15）重建对象的图像，其中基于所提供的调制对检测值进行加权从加权检测值重建对象的权重和图像。这可以通过相应地调节辐射来优化对物体的剂量应用，其中重建的图像仍然具有高质量。

4. 发明申请

WO2011036624A1 SYSTEM AND METHOD FOR GENERATING AN IMAGE OF A REGION OF INTEREST 审中-公开
标题翻译：用于生成兴趣区域的图像的系统和方法
公开(公告)号：WO2011036624A1
公开(公告)日：2011-03-31
申请号：PCT/IB2010/054256
申请日：2010-09-21
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , PROKSA, Roland
发明人： KOEHLER, Thomas , PROKSA, Roland
IPC分类号： G06T5/50 , G06T11/00
CPC分类号： G06T11/008 , G06T5/50 , G06T2211/421 , G06T2211/424
摘要： The invention relates to an image generation system for generating an image of a region of interest. The image generation system comprises a measured data providing unit for providing measured data of the region of interest, a reconstruction unit (12) for reconstructing a first and a second image of the region of interest from the measured data using a first and a second reconstruction method, a noise determination unit (13) for determining first and second noise values for first and second image elements of the first and second image, and an image element combining unit (14) for combining corresponding first and second image elements into combined image elements forming a combined image based on the first and second noise values. By combining corresponding image elements of two differently reconstructed images based on determined noise values, a combined image of a region of interest can be generated with an improved quality.
摘要翻译：本发明涉及一种用于产生感兴趣区域的图像的图像生成系统。图像生成系统包括测量数据提供单元，用于提供感兴趣区域的测量数据;重建单元（12），用于使用第一和第二重构从所测量的数据重构感兴趣区域的第一和第二图像方法，用于确定第一和第二图像的第一和第二图像元素的第一和第二噪声值的噪声确定单元（13），以及用于将对应的第一和第二图像元素组合成组合图像元素的图像元素组合单元（14）基于第一和第二噪声值形成组合图像。通过基于确定的噪声值组合两个不同重建图像的相应图像元素，可以以改进的质量生成感兴趣区域的组合图像。

5. 发明申请

WO2006000997A2 IMAGING METHOD WITH BACK PROJECTION 审中-公开
标题翻译：具有后投影的成像方法
公开(公告)号：WO2006000997A2
公开(公告)日：2006-01-05
申请号：PCT/IB2005/052090
申请日：2005-06-24
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , NIELSEN, Tim , ZIEGLER, Andy , KOEHLER, Thomas , PROKSA, Roland
发明人： NIELSEN, Tim , ZIEGLER, Andy , KOEHLER, Thomas , PROKSA, Roland
IPC分类号： G06T15/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421 , Y10S378/901
摘要： 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.
摘要翻译：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。

6. 发明申请

WO2013027138A1 FREQUENCY DEPENDENT COMBINATION OF X-RAY IMAGES OF DIFFERENT MODALITIES 审中-公开
标题翻译：不同模式的X射线图像的频率相关组合
公开(公告)号：WO2013027138A1
公开(公告)日：2013-02-28
申请号：PCT/IB2012/053854
申请日：2012-07-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , MAACK, Hanns-Ingo , RÖSSL, Ewald , KOEHLER, Thomas , PROKSA, Roland
发明人： MAACK, Hanns-Ingo , RÖSSL, Ewald , KOEHLER, Thomas , PROKSA, Roland
IPC分类号： G06T5/50
CPC分类号： G06T11/60 , A61B6/484 , G06T5/50 , G06T2207/10116 , G06T2207/20056 , G06T2207/20221 , G06T2207/30004
摘要： The present invention relates to X-ray imaging technology. In phase-contrast imaging, different types of image information, e.g. absorption image information and differential phase-contrast image information, may be obtained by a single image acquisition process. Individual types of image information comprise different image properties. The present invention relates to a frequency dependent combination of different types of image information to obtain a combined image having improved properties over the individual image information and their respective image information type. Accordingly, an apparatus (56) as well as a method (100) for image processing in X-ray imaging of an object is provided comprising receiving (102) first image information of the object of a first image information type, receiving (104) second image information of the object of a second image information type,wherein the second image information type is different from the first image information type. Subsequently the first image information and the second image information is combined(106)to obtain combined image information of the object, wherein the combination of the first image information and the second image information is a frequency-dependent combination, depending on the spatial frequency of the first image information and the second image information.
摘要翻译：本发明涉及X射线成像技术。在相位对比成像中，不同类型的图像信息，例如，吸收图像信息和差分相位差图像信息可以通过单个图像获取处理获得。各种类型的图像信息包括不同的图像属性。本发明涉及不同类型的图像信息的频率相关组合，以获得具有相对于各个图像信息及其各自的图像信息类型具有改进的特性的组合图像。因此，提供了一种装置（56）以及用于对象的X射线成像中的图像处理的方法（100），包括接收（102）第一图像信息类型的对象的第一图像信息，接收（104）第二图像信息类型的对象的第二图像信息，其中第二图像信息类型与第一图像信息类型不同。随后，将第一图像信息和第二图像信息组合（106）以获得对象的组合图像信息，其中第一图像信息和第二图像信息的组合是频率相关组合，其取决于第一图像信息和第二图像信息。

7. 发明申请

WO2009138933A1 METHOD AND SYSTEM FOR GENERATING AN X-RAY BEAN 审中-公开
标题翻译：用于生成X射线光束的方法和系统
公开(公告)号：WO2009138933A1
公开(公告)日：2009-11-19
申请号：PCT/IB2009/051906
申请日：2009-05-08
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , THRAN, Axel , FORTHMANN, Peter , PROKSA, Roland , KOEHLER, Thomas
发明人： THRAN, Axel , FORTHMANN, Peter , PROKSA, Roland , KOEHLER, Thomas
IPC分类号： H01J35/10 , H01J35/30 , H05G1/52 , H05G1/58 , A61B6/00
CPC分类号： H01J35/10 , H01J35/30 , H01J2235/086 , H05G1/52 , H05G1/58
摘要： To scan an object with differently shaped cone beams (112, 122), the present invention provides a CT scanner with a moveable X-ray tube (the meaning of "move the x-ray tube among a plurality of predefined positions" also covers the situation that the anode disk is moved among a plurality of corresponding positions, while the shell of the x-ray tube does not move). The X-ray tube is not only moveable along the axial direction, but also along the radial direction of the CT scanner gantry. The scanner comprises an X-ray tube, which X-ray tube further comprises: an anode disk (100), comprising a plurality of focal tracks (110, 120) each focal track being cone-shaped with an anode angle (114, 124) different from the anode angle(s) of the other focal track(s); and a first cathode (210), configured to emanate an electron beam targeting at least one of the plurality of focal tracks. When different focal tracks are bombarded by electron beams, different X-ray beams (112, 122) with differently shaped cone beams are generated.
摘要翻译：为了扫描具有不同形状的锥形束（112,122）的物体，本发明提供具有可移动X射线管的CT扫描器（“在多个预定位置中移动x射线管”的含义也覆盖使得阳极盘在多个对应位置之间移动，而X射线管的外壳不移动的情况）。 X射线管不仅可以沿轴向移动，而且可沿CT扫描仪台架的径向方向移动。所述扫描器包括X射线管，所述X射线管还包括：阳极盘（100），包括多个焦点轨道（110,120），每个焦点轨道呈圆锥形，具有阳极角（114,124 ）不同于另一个焦点轨道的阳极角度; 以及第一阴极（210），被配置为发射靶向所述多个焦点轨道中的至少一个的电子束。当不同的焦点轨道被电子束轰击时，产生具有不同形状的锥形束的不同的X射线束（112,122）。

8. 发明申请

WO2012114250A1 DETECTION APPARATUS 审中-公开
标题翻译：检测装置
公开(公告)号：WO2012114250A1
公开(公告)日：2012-08-30
申请号：PCT/IB2012/050755
申请日：2012-02-20
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , RÖSSL, Ewald , KOEHLER, Thomas , PROKSA, Roland
发明人： RÖSSL, Ewald , KOEHLER, Thomas , PROKSA, Roland
IPC分类号： A61B6/03
CPC分类号： G21K1/00 , A61B6/027 , A61B6/032 , A61B6/4035 , A61B6/4078 , A61B6/4233 , A61B6/482
摘要： The invention relates to a detection apparatus comprising a filter (20) for filtering a conical radiation beam (4) such that at least a first region (22) and a second region (23) of the radiation beam are generated having different energy spectra, wherein the first region of the radiation beam illuminates a first detector area (25) on a detection surface (21) of a detector, thereby generating a first set of detection values, and the second region of the radiation beam illuminates a second detector area (26) on the detection surface, thereby generating a second set of detection values. For example, by using the filter the detection apparatus can be used as dual-energy computed tomography apparatus, wherein, for instance, a standard computed tomography apparatus can be transformed to a dual-energy computed tomography apparatus by adding the filter to the standard computed tomography apparatus, preferentially without modifying the radiation source and the detector.
摘要翻译：本发明涉及一种检测装置，其包括用于过滤锥形辐射束（4）的过滤器（20），使得产生具有不同能谱的辐射束的至少第一区域（22）和第二区域（23）其中辐射束的第一区域照射检测器的检测表面（21）上的第一检测器区域（25），从而产生第一组检测值，并且辐射束的第二区域照亮第二检测器区域 26），从而产生第二组检测值。例如，通过使用滤波器，检测装置可以用作双能计算机断层摄影装置，其中，例如，标准计算机断层摄影装置可以通过将滤波器加到标准计算机断层摄影装置优选不改变辐射源和检测器的断层摄影装置。

9. 发明申请

WO2012077027A1 POST-PATIENT DYNAMIC FILTER FOR COMPUTED TOMOGRAPHY (CT) 审中-公开
标题翻译：用于计算机图像（CT）的患者动态过滤器
公开(公告)号：WO2012077027A1
公开(公告)日：2012-06-14
申请号：PCT/IB2011/055435
申请日：2011-12-02
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , SCHMITT, Holger , PROKSA, Roland
发明人： KOEHLER, Thomas , PROKSA, Roland
IPC分类号： A61B6/03 , A61B6/06 , G01N23/04 , G21K1/10
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/06 , A61B6/4241 , A61B6/4291 , A61B6/488 , A61B6/544 , G21K1/10
摘要： An imaging system includes a radiation source (310) configured to rotate around an examination region about a z-axis and having a focal spot that emits a radiation beam that traverses the examination region. The system further includes a radiation sensitive detector array (314) with a plurality of detector pixels that detects radiation traversing the examination region and generates projection data indicative of the detected radiation. The system further includes a dynamic post-patient filter (316) including one or more filter segments (402, 802, 902, 1004, 1102). The filter is configured to selectively and dynamically move in front of the detector array between the detector array and the examination region and into and out of a path of the radiation beam illuminating the detector pixels during scanning an object or subject based on a shape of the object or subject, thereby filtering unattenuated radiation and radiation traversing a periphery of the object or subject.
摘要翻译：成像系统包括被配置为围绕z轴围绕检查区域旋转并具有发射穿过检查区域的辐射束的焦点的辐射源（310）。该系统还包括具有多个检测器像素的辐射敏感检测器阵列（314），其检测穿过检查区域的辐射，并产生指示检测到的辐射的投影数据。该系统还包括动态的患者后过滤器（316），其包括一个或多个过滤器段（402,802,902,1004,1102）。滤波器被配置为在检测器阵列和检查区域之间选择性地和动态地在检测器阵列之前移动，并且在扫描对象或被摄体期间，在扫描对象或被摄体期间进入和离开照射检测器像素的辐射束的路径，物体或物体，从而过滤未被衰减的辐射和穿过物体或物体的周边的辐射。

10. 发明申请

WO2012073167A1 ITERATIVE RECONSTRUCTION ALGORITHM WITH A CONSTANT VARIANCE BASED WEIGHTING FACTOR 审中-公开
标题翻译：基于恒定变量因子的迭代重构算法
公开(公告)号：WO2012073167A1
公开(公告)日：2012-06-07
申请号：PCT/IB2011/055307
申请日：2011-11-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
发明人： BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
摘要： A method includes reconstructing measured projection data using an iterative statistical reconstruction algorithm that reduces image artifact caused by differences in variances in projections of the measured projection data used to update a voxel of the image for one or more voxels of the image. A reconstructor includes a processor that reconstructs measured projection data using an iterative statistical reconstruction algorithm that reduces or mitigates image artifact caused by differences in variances in projections used to update a voxel of the image for one or more voxels of the image. A computer readable storage medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to: reduce image artifact caused by differences in variances in projections used to update a voxel of an image for one or more voxels of the image using an iterative statistical reconstruction algorithm.
摘要翻译：一种方法包括使用迭代统计重建算法来重建测量的投影数据，所述迭代统计重构算法减少由用于更新图像的一个或多个体素的图像的体素的测量投影数据的投影方差的差异引起的图像伪像。重构器包括使用迭代统计重构算法来重建测量的投影数据的处理器，其减少或减轻由用于更新图像的一个或多个体素的图像的体素的投影方差的差异引起的图像伪像。一种用计算机可执行指令编码的计算机可读存储介质，其在由计算机的处理器执行时使处理器能够：减少由用于更新一个或多个体素的图像的体素的投影方差的差异引起的图像伪像的图像使用迭代统计重建算法。

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