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1. 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。

2. 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

3. 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。

4. 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。

5. 发明申请

WO2006067671A3 METHOD AND APPARATUS FOR CARDIAC COMPUTED TOMOGRAPHY 审中-公开
标题翻译：心脏计算机图像的方法和装置
公开(公告)号：WO2006067671A3
公开(公告)日：2006-09-14
申请号：PCT/IB2005054198
申请日：2005-12-13
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , FORTHMANN PETER , KOEHLER THOMAS , MANZKE ROBERT , GRASS MICHAEL , ZIEGLER ANDY
发明人： FORTHMANN PETER , KOEHLER THOMAS , MANZKE ROBERT , GRASS MICHAEL , ZIEGLER ANDY
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503
摘要： A method of recording images of the heart in computed tomography is provided in which, in order to prevent movement artifacts, the images are reconstructed on the basis of similar movement states of the heart and different radiation intensities are used for different movement states. During recording operation low-resolution images are continually reconstructed from the recorded data. The movement state of the heart is determined from the low- resolution images, preferably by comparing successive images. During the desired heart phase with little heart movement the power of the X-ray tube is increased. A high-resolution reconstruÌtion is carried out retrospectively from data recorded with a high radiation intensity in similar movement states with little heart movement. Also disclosed are a CT apparatus and a computer program for carrying out the method.
摘要翻译：提供了一种在计算机断层摄影中记录心脏图像的方法，其中为了防止运动伪像，基于心脏的相似运动状态重建图像，并且不同的辐射强度用于不同的运动状态。在记录操作期间，从记录的数据中连续重建低分辨率图像。优选地，通过比较连续图像，从低分辨率图像确定心脏的移动状态。在期望的心脏移动期间，X射线管的功率增加。从具有较小的心脏运动的相似运动状态下以高辐射强度记录的数据追溯地进行高分辨率重建。还公开了一种用于执行该方法的CT装置和计算机程序。

6. 发明申请

WO2007004196A3 EXACT FBP TYPE ALGORITHM FOR ARBITRARY TRAJECTORIES 审中-公开
标题翻译：用于仲裁TRAJECTORIES的精确FBP类型算法
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
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KOEHLER THOMAS , BONTUS CLAAS , PROKSA ROLAND
发明人： KOEHLER THOMAS , BONTUS CLAAS , PROKSA ROLAND
IPC分类号： A61B6/03 , G01N23/04 , G06T11/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , G06T11/006 , G06T2211/416 , G06T2211/421
摘要： 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.
摘要翻译： 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。

7. 发明申请

WO2004111945A3 COMPUTER TOMOGRAPHY METHOD USING REDUNDANT MEASURED VALUES 审中-公开
标题翻译：使用冗余测量值的计算机图形方法
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
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KOEHLER THOMAS , PROKSA ROLAND
发明人： KOEHLER THOMAS , PROKSA ROLAND
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416
摘要： 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.
摘要翻译：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。

8. 发明申请

WO02073174A3 FAST COMPUTED TOMOGRAPHY METHOD 审中-公开
标题翻译：快速计算方法
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , GRASS MICHAEL , KOEHLER THOMAS , PROKSA ROLAND
发明人： GRASS MICHAEL , KOEHLER THOMAS , PROKSA ROLAND
IPC分类号： A61B6/03 , G01N23/04 , G06T11/00
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419
摘要： 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.
摘要翻译：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。

9. 发明申请

WO2008059434A3 DIFFUSE OPTICAL TOMOGRAPHY WITH MARKERS CONTAINING FLUORESCENT MATERIAL 审中-公开
标题翻译：含荧光材料标记的光学层析衍射
公开(公告)号：WO2008059434A3
公开(公告)日：2008-07-24
申请号：PCT/IB2007054593
申请日：2007-11-12
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , ZIEGLER ANDY , KOEHLER THOMAS , NIELSEN TIM , VAN DER MARK MARTINUS B , VAN BEEK MICHAEL C
发明人： ZIEGLER ANDY , KOEHLER THOMAS , NIELSEN TIM , VAN DER MARK MARTINUS B , VAN BEEK MICHAEL C
IPC分类号： A61B5/00 , G01J3/44
CPC分类号： A61B5/4312 , A61B5/0091 , G01N21/4795 , G01N21/6456
摘要： The invention relates to a system, a medical image acquisition system, and a method for imaging an interior of a turbid medium (25). The invention also relates to a marker (60) for use in the method for imaging an interior of a turbid medium (25). The system, the medical image acquisition system, and the method may be used for obtaining an image of an interior of a turbid medium (25) by: accommodation of a turbid medium (25) inside a receiving volume (20); irradiation of the receiving volume (20) with light from a light source; detection of light emanating from the receiving volume (20) as a result of irradiating the receiving volume (20) with light from the light source through the use of a photodetector unit. The detected light is then used to reconstruct an image of an interior of the turbid medium (25). According to the invention, the system, the medical acquisition system, and the method are adapted such that during a measurement the receiving volume (20) comprises at least one marker (60) comprising a predetermined concentration of a chosen fluorescent agent. The light source is arranged for generating excitation light that causes fluorescent emission in the marker (60) and the photodetector is arranged to detect light emanating from the receiving volume (20) as a result of irradiating the receiving volume (20) with excitation light. The use of a marker (60) according to the invention enables obtaining information relating to the geometry of the turbid medium (25). If the turbid medium (25) comprises an unknown concentration of a second fluorescent agent, and the light source and the photodetector unit are arranged for causing fluorescence in the second fluorescent agent and detecting the resulting fluorescence light, respectively, the use of a marker (60) according to the invention enables calibration of the signal resulting from this fluorescence light.
摘要翻译：本发明涉及一种用于对混浊介质（25）的内部进行成像的系统，医学图像采集系统和方法。本发明还涉及用于对混浊介质（25）的内部进行成像的方法中使用的标记（60）。该系统，医学图像采集系统和方法可以用于通过以下操作来获得混浊介质（25）的内部的图像：在容纳体积（20）内容纳混浊介质（25）; 用来自光源的光照射接收体积（20）作为通过使用光电探测器单元以来自光源的光照射接收体积（20）的结果检测从接收体积（20）发出的光。然后使用检测到的光重建混浊介质（25）内部的图像。根据本发明，系统，医疗采集系统和方法适于使得在测量期间，接收容积（20）包括至少一个包含预定浓度的所选荧光剂的标记（60）。光源被设置用于产生在标记（60）中引起荧光发射的激发光，并且光检测器被设置为检测由于用激发光照射接收体积（20）而从接收体积（20）发出的光。根据本发明使用标记（60）能够获得与浑浊介质（25）的几何形状有关的信息。如果混浊介质（25）包含未知浓度的第二荧光剂，并且光源和光电检测器单元被设置为分别在第二荧光剂中引起荧光并检测所得到的荧光，则使用标记（ 60）根据本发明能够校准由该荧光产生的信号。

10. 发明申请

WO2008065578A3 RADIATION-AND-DETECTION SYSTEM 审中-公开
标题翻译：辐射与检测系统
公开(公告)号：WO2008065578A3
公开(公告)日：2008-09-12
申请号：PCT/IB2007054726
申请日：2007-11-21
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , KOEHLER THOMAS
发明人： KOEHLER THOMAS
IPC分类号： A61B6/03 , A61B6/00
CPC分类号： A61B6/022 , A61B6/027 , A61B6/032 , A61B6/4028
摘要： The invention relates to radiation-and-detection system comprising a radiation unit (2) for alternately illuminating a detection unit (6) with radiation of a first emanating region (15) at first time intervals and with radiation of a second emanating region (16) at second time intervals, wherein first detection values are detected at the first time intervals and second detection values are detected at the second time intervals. The radiation-and- detection system is calibrated with respect to the influence of the radiation of the second emanating region (16) to the first detection values and with respect to the influence of the radiation of the first emanating region (15) to the second detection values.
摘要翻译：本发明涉及辐射和检测系统，其包括用于以第一时间间隔和第二发射区域（16）的辐射交替地照射具有第一发射区域（15）的辐射的检测单元（6）的辐射单元（2）），其中在第一时间间隔检测第一检测值，并且以第二时间间隔检测第二检测值。相对于第二发射区域（16）的辐射对第一检测值的影响并且关于第一发射区域（15）的辐射对第二发射区域（15）的影响，辐射和检测系统被校准检测值。

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