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11. 发明申请

WO2009027904A3 X RAY IMAGING SYSTEM WITH CYLINDRICAL ARRANGEMENT OF SOURCE AND DETECTOR 审中-公开
标题翻译： X射线成像系统与源和检测器的圆柱形布置
公开(公告)号：WO2009027904A3
公开(公告)日：2009-04-30
申请号：PCT/IB2008053353
申请日：2008-08-21
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , PROKSA ROLAND , THRAN AXEL , GRASS MICHAEL
发明人： PROKSA ROLAND , THRAN AXEL , GRASS MICHAEL
IPC分类号： A61B6/03
CPC分类号： A61B6/4014 , A61B6/027 , A61B6/032 , A61B6/4028 , A61B6/503 , A61B6/508 , G01T1/1644 , H01J2235/00
摘要： The invention relates to an X-rayimaging system (100) like a CT-scanner. In a preferred embodiment of the system, a cylindrical X-raydetector(130) is sandwiched between two cylindrical X-raysources (110, 120) or vice versa. The X-raysources preferably comprise cathodes with carbon nanotubes and a multitude of focal spots(111) that can selectively be controlled. The cylinder-diameters of the X-raysource and the X-raydetector may be the same or, preferably, be different. Moreover, the X-raysource and the X-ray detector preferably extend circumferentially over less than the full angle of 360°.
摘要翻译：本发明涉及像CT扫描仪的X射线成像系统（100）。在系统的优选实施例中，圆柱形X射线检测器（130）夹在两个圆柱形X射线源（110,120）之间，反之亦然。 X射线源优选地包括具有碳纳米管的阴极和可以选择性地被控制的多个焦点（111）。 X射线源和X射线检测器的圆筒直径可以相同或优选地不同。此外，X射线源和X射线检测器优选地圆周地延伸小于360°的全角。

12. 发明申请

WO2007034359A3 QUANTITATIVE MATERIAL DECOMPOSITION FOR SPECTRAL CT 审中-公开
标题翻译：用于光谱CT的定量材料分解
公开(公告)号：WO2007034359A3
公开(公告)日：2008-11-06
申请号：PCT/IB2006053227
申请日：2006-09-12
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , PROKSA ROLAND
发明人： PROKSA ROLAND
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4241 , A61B6/482
摘要： The present invention relates to a CT system for determining the quantitative material concentrations of the components, such as bone, blood, contrast agent, in a region of interest of an object, such as a patient. To provide a CT system which improves the quality and explanatory power of quantitative material decomposition, a CT system is proposed comprising: a scanning unit (102) having a radiation source (10) and a detector unit (12) for acquisition of spectral CT projection data from said region of interest; a modeling unit (104) for obtaining a photoelectric effect projection data set and a Compton effect projection data set by decomposing said spectral CT projection data set by means of respective models of photoelectric effect and Compton effect; a reconstruction unit (106) for reconstructing a photoelectric effect image and a Compton effect image of said region of interest from said photoelectric effect projection data set and Compton effect projection data set; a processing unit (108) for determining the concentrations of said components in said region of interest by solving a system of equations obtained by equating said photoelectric effect image data with the accumulated products of said concentrations and photoelectric attenuation coefficients for said components and equating said Compton effect image data with the accumulated products of said concentrations and Compton attenuation coefficients for said components. The invention relates further to a corresponding data processing device and method.
摘要翻译：本发明涉及一种用于确定物体（例如患者）的感兴趣区域中的组分（例如骨骼，血液，造影剂）的定量材料浓度的CT系统。为了提供提高定量材料分解的质量和解释力的CT系统，提出了一种CT系统，包括：具有辐射源（10）的扫描单元（102）和用于采集光谱CT投影的检测器单元（12）来自该地区的数据; 用于通过利用光电效应和康普顿效应的各自模型分解所述光谱CT投影数据集来获得光电效应投影数据集和康普顿效应投影数据集的建模单元（104）重建单元（106），用于从所述光电效应投影数据集和康普顿效应投影数据集重建光电效应图像和所述感兴趣区域的康普顿效应图像; 处理单元（108），用于通过求解通过将所述光电效应图像数据与所述浓度的累积积和所述分量的光电衰减系数相等而获得的等式来确定所述感兴趣区域中的所述分量的浓度，并将所述康普顿影响图像数据与所述分量的积分积和康普顿衰减系数。本发明还涉及相应的数据处理装置和方法。

13. 发明申请

WO2006000997A3 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：WO2006000997A3
公开(公告)日：2007-04-26
申请号：PCT/IB2005052090
申请日：2005-06-24
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , NIELSEN TIM , ZIEGLER ANDY , KOEHLER THOMAS , PROKSA ROLAND
发明人： NIELSEN TIM , ZIEGLER ANDY , KOEHLER THOMAS , PROKSA ROLAND
IPC分类号： G06T11/00
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。

14. 发明申请

WO2006117720A2 ENERGY-RESOLVED PHOTON COUNTING FOR CT 审中-公开
标题翻译：用于CT的能量决定光电子计数器
公开(公告)号：WO2006117720A2
公开(公告)日：2006-11-09
申请号：PCT/IB2006051285
申请日：2006-04-25
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , PROKSA ROLAND , GRASS MICHAEL
发明人： PROKSA ROLAND , GRASS MICHAEL
CPC分类号： G01T1/2985 , G01N23/046 , G01N2223/419 , G01V5/0041 , G01V5/005
摘要： Spectral CT systems require cheap detectors with high energy resolution. According to an aspect of the present invention, a computer tomography apparatus comprises a detector element which is segmented into a plurality of sub-pixels. Each sub-pixel has at least two thresholds and counting channels, wherein the second threshold for each sub-pixel varies over the nominal detector element. This may provide for an improved energy-resolved photon counting.
摘要翻译：光谱CT系统需要具有高能量分辨率的廉价检测器。根据本发明的一个方面，一种计算机断层摄影装置包括被分割成多个子像素的检测器元件。每个子像素具有至少两个阈值和计数通道，其中每个子像素的第二阈值在标称检测器元件上变化。这可以提供改进的能量分辨光子计数。

15. 发明申请

WO2006109233A2 IMAGE PROCESSING SYSTEM, PARTICULARLY FOR CIRCULAR AND HELICAL CONE-BEAM CT 审中-公开
标题翻译：图像处理系统，特别适用于圆形和螺旋锥形CT
公开(公告)号：WO2006109233A2
公开(公告)日：2006-10-19
申请号：PCT/IB2006051086
申请日：2006-04-10
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KOEHLER THOMAS , PROKSA ROLAND , ZIEGLER ANDY
发明人： KOEHLER THOMAS , PROKSA ROLAND , ZIEGLER ANDY
IPC分类号： G06T11/00
CPC分类号： G06T11/008 , G06T11/006
摘要： The invention relates to an examination apparatus with an X-ray device (10) for circular or helical cone-beam CT acquisition of projections images (P i (E 1 ), P i (E 2 )) of a patient (1) with different energy spectra (E 1 , E 2 ) and/or with an energy -resolved detection. By a combination of the projections, images (I bone , i , I tissue , i ) can be calculated that show predominantly the bone structure and the soft tissue, respectively. Therefore, a 3D model (M bone ) of the bone structure and a 3D model (M tissue ) of the tissue can be reconstructed separately. After removal of artifacts from the bone- structure model (M bone ), both separate 3D models can be integrated to a combined model (M) of the body volume with a high image quality.
摘要翻译：本发明涉及一种具有X射线装置（10）的检查装置，用于对投影图像进行圆形或螺旋锥束CT采集（P 1）具有不同能量谱的患者（1）的患者（1）的患者（E 2） >）和/或用能量分辨检测。通过投影的组合，可以计算出图像（I ，，I ，SUB> i）主要分别显示骨骼结构和软组织。因此，可以分别重建组织的骨骼结构的3D模型（M＆gt;骨头）和3D模型（M＆gt;组织）。在从骨结构模型（骨骼）中去除人造物之后，两个分开的3D模型可以被集成到具有高图像质量的身体体积的组合模型（M）上。

16. 发明申请

WO2009156898A3 MEDICAL X-RAY EXAMINATION APPARATUS AND METHOD FOR K-EDGE IMAGING 审中-公开
标题翻译：医学X射线检查装置和K边缘成像方法
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , PROKSA ROLAND
发明人： PROKSA ROLAND
IPC分类号： A61B6/03 , A61B6/00 , G21K1/06
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/4014 , A61B6/4042 , A61B6/4241 , A61B6/481 , A61B6/482 , A61B6/504 , A61B6/507 , A61B6/583 , G21K2201/062 , G21K2201/064
摘要： 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.
摘要翻译：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。

17. 发明申请

WO2008129474A3 IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST FROM ENERGY-DEPENDENT PROJECTION DATA 审中-公开
标题翻译：用于形成能源依赖投影数据的兴趣区域的成像系统
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , PROKSA ROLAND
发明人： PROKSA ROLAND
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , G06T2211/408 , G06T2211/424
摘要： 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.
摘要翻译：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。

18. 发明申请

WO2008050298A3 IMAGING SYSTEM FOR IMAGING AN OBJECT 审中-公开
标题翻译：成像对象成像系统
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , PROKSA ROLAND
发明人： PROKSA ROLAND
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/4241 , A61B6/482 , Y10S378/901
摘要： 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.
摘要翻译：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。

19. 发明申请

WO2006097867A8 METHOD AND DEVICE FOR THE ITERATIVE RECONSTRUCTION OF TOMOGRAPHIC IMAGES 审中-公开
标题翻译：用于重建图像图像的方法和装置
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
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , ZIEGLER ANDY , KOEHLER THOMAS , PROKSA ROLAND
发明人： ZIEGLER ANDY , KOEHLER THOMAS , PROKSA ROLAND
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , G06T2211/424

20. 发明申请

WO2005008597A3 RECONSTRUCTION OF AN IMAGE OF A MOVING OBJECT FROM VOLUMETRIC DATA 审中-公开
标题翻译：从体积数据重建运动对象的图像
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
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KOEHLER THOMAS , GRASS MICHAEL , KUHN MICHAEL HARALD , PROKSA ROLAND
发明人： KOEHLER THOMAS , GRASS MICHAEL , KUHN MICHAEL HARALD , PROKSA ROLAND
IPC分类号： G06T7/20 , G06T11/00
CPC分类号： G06T7/20 , G06T11/005 , G06T2207/10081 , G06T2207/30048 , G06T2211/404 , G06T2211/412
摘要： 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.
摘要翻译：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。

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