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1. 发明申请

WO2005034756A1 ASYMMETRIC CSCT 审中-公开
标题翻译：不对称CSCT
公开(公告)号：WO2005034756A1
公开(公告)日：2005-04-21
申请号：PCT/IB2004/051970
申请日：2004-10-05
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , GRASS, Michael , KOEHLER, Thomas
发明人： GRASS, Michael , KOEHLER, Thomas
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , G01N23/046 , G01N2223/419
摘要： According to the present invention, an asymmetric acquisition system is used, where the radiation detector is arranged asymmetrically with respect to a fan beam plane of the scanner. Advantageously, this may allow to increase a scatter angle range for a given detector height in the direction of the rotational axis. Furthermore, this may allow for an optimal data flow for a combined volume absorption distribution reconstruction and subsequent coherent scatter CT reconstruction.
摘要翻译：根据本发明，使用非对称采集系统，其中辐射检测器相对于扫描仪的扇形光束平面不对称地布置。有利地，这可以允许在旋转轴线的方向上增加给定检测器高度的散射角范围。此外，这可以允许用于组合体积吸收分布重建和随后的相干散射CT重建的最佳数据流。

2. 发明申请

WO2005082253A1 DRUG APPLICATION DURING A CT SCAN 审中-公开
标题翻译： CT扫描期间的药物应用
公开(公告)号：WO2005082253A1
公开(公告)日：2005-09-09
申请号：PCT/IB2005/050576
申请日：2005-02-15
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , KOEHLER, Thomas , GRASS, Michael
发明人： KOEHLER, Thomas , GRASS, Michael
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/503 , A61B6/541 , A61B8/481
摘要： Controlled local application of drugs to a certain part of a body of a patient may be of major importance during a cardiac CT scan. By transporting the drugs in containers which prevent an application of the drugs and by rupturing only those containers which are located in the vicinity of the part of the body of a patient to which the drugs have to be applied, a local application of the drugs may be performed. According to an exemplary embodiment of the present invention, the rupturing and therefore the application of the drugs may be triggered by a monitoring algorithm which evaluates changes in the heart beat rate of the patient. Advantageously, the method allows for a local delivery of the drugs on a fine time scale and therefore for a fast control of the heart beat rate during the CT scan.
摘要翻译：在心脏CT扫描期间，将药物局部应用于患者身体的某一部分可能是非常重要的。通过将药物运送到容器中，以防止药物的使用，并且仅破坏那些位于药物必须施用的患者身体部分附近的容器，则药物的局部应用可以被执行。根据本发明的示例性实施例，药物的破裂和因此的应用可以由评估患者心跳速率变化的监测算法来触发。有利地，该方法允许在精细时间范围内局部递送药物，因此可以在CT扫描期间快速控制心跳率。

3. 发明申请

WO2007072286A2 METHOD FOR MOVEMENT COMPENSATION OF IMAGE DATA 审中-公开
标题翻译：运动补偿图像数据的方法
公开(公告)号：WO2007072286A2
公开(公告)日：2007-06-28
申请号：PCT/IB2006/054727
申请日：2006-12-11
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , GRASS, Michael , KOEHLER, Thomas
发明人： GRASS, Michael , KOEHLER, Thomas
IPC分类号： G06T11/00
CPC分类号： A61B6/032 , A61B6/541 , G06T11/005 , G06T2211/412
摘要： According to an exemplary embodiment a method for movement compensation of image data of an object of interest comprises receiving projection data, receiving motion vector field data, and dividing the motion vector field data into a number of layers of motion vector field data. Furthermore, the method comprises generating motion compensated projection data by projecting at least one of the number of layered motion vector field data onto the projection data and applying a two dimensional motion compensation on the projection, and generating image data of at least one voxel by back-projecting the movement compensated projection data.
摘要翻译：根据示例性实施例，一种用于感兴趣对象的图像数据的运动补偿的方法包括：接收投影数据;接收运动矢量场数据;以及将运动矢量场数据分成多个层运动矢量场数据。此外，该方法包括通过将多个分层运动矢量场数据中的至少一个投影到投影数据上并且对投影应用二维运动补偿并且通过后部生成至少一个体素的图像数据来生成运动补偿投影数据 - 投影移动补偿投影数据。

4. 发明申请

WO2005093662A1 GATED CONE-BEAM COMPUTED TOMOGRAPHY RECONSTRUCTION WITH MOTION COMPENSATION 审中-公开
标题翻译：具有运动补偿的Gated CONE-BEAM计算机图像重建
公开(公告)号：WO2005093662A1
公开(公告)日：2005-10-06
申请号：PCT/IB2005/050940
申请日：2005-03-18
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , MANZKE, Robert , KOEHLER, Thomas , GRASS, Michael , MOVASSAGHI, Babak
发明人： MANZKE, Robert , KOEHLER, Thomas , GRASS, Michael , MOVASSAGHI, Babak
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , G06T2211/412
摘要： E.g. in cardiac cone-beam CT, the source path is interrupted due to the fact that the projection data is gated. According to the present invention, a method is provided to obtain projection data corresponding to an uninterrupted source trajectory from such a gated data set. For this purpose, a motion compensation is applied. Advantageously, a complete data set may be determined allowing for an approximate or an exact reconstruction method to be applied to the completed data set without interruption of the image generation.
摘要翻译：例如。在心脏锥束CT中，由于投影数据被门控的原因，源路径被中断。根据本发明，提供了一种从这种门控数据集获得对应于不中断的源轨迹的投影数据的方法。为此，应用运动补偿。有利地，可以确定完整数据集，允许将近似或精确重建方法应用于完成的数据集而不中断图像生成。

5. 发明申请

WO2006067671A2 METHOD FOR COMPUTER TOMOGRAPHY, AND COMPUTER TOMOGRAPH 审中-公开
标题翻译：计算机图形学和计算机图形学的方法
公开(公告)号：WO2006067671A2
公开(公告)日：2006-06-29
申请号：PCT/IB2005/054198
申请日：2005-12-13
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , FORTHMANN, Peter , KÖHLER, Thomas , MANZKE, Robert , GRASS, Michael , ZIEGLER, Andy
发明人： FORTHMANN, Peter , KÖHLER, 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： According to the invention, there is provided a method of recording images of the heart in computer tomography, 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. Also provided is a computer tomograph for recording images of the heart in computer tomography by means of time windows which exhibit similar movement states of the heart in order to prevent movement artifacts, said computer tomograph comprising a control device which controls a radiation source with different radiation intensities for different movement states. Furthermore provided is a computer program for a computer tomograph for recording images of the heart in computer tomography by means of time windows which exhibit similar movement states of the heart in order to prevent movement artifacts, and for controlling a radiation source with different radiation intensities for different movement states.
摘要翻译：根据本发明，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，并且使用不同的辐射强度对于不同的运动状态。还提供了一种用于在计算机断层摄影中记录心脏图像的计算机断层摄影装置，其通过显示相似的心脏运动状态以防止运动伪像的时间窗口，所述计算机断层摄影机包括控制具有不同辐射的辐射源的控制装置不同运动状态的强度。此外还提供了一种用于计算机断层摄影机的计算机程序，用于通过时间窗口在计算机断层摄影中记录心脏的图像，所述时间窗口表现出相似的心脏移动状态以防止运动伪像，并且用于控制具有不同辐射强度的辐射源不同的运动状态。

6. 发明申请

WO2005055829A1 COMPUTER TOMOGRAPHY METHOD FOR OBJECTS MOVING PERIODICALLY 审中-公开
标题翻译：用于对象运动的计算机计算机方法
公开(公告)号：WO2005055829A1
公开(公告)日：2005-06-23
申请号：PCT/IB2004/052612
申请日：2004-12-01
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , MANZKE, Robert , GRASS, Michael
发明人： MANZKE, Robert , GRASS, Michael
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/027 , A61B6/032 , A61B6/469 , A61B6/503 , A61B6/504 , A61B6/541 , G06T2211/412
摘要： The invention relates to a computer tomography method in which a bundle of rays passes through an object that is moving periodically, in particular a heart. During the acquisition of measured values, a movement signal dependent on the movement of the object is sensed. From this movement signal are determined periodically repeated phases of movement, after which a plurality of intermediate images of a region of the object are reconstructed, in particular at a low resolution, using measured values whose times of acquisition were situated in different phases of movement, thus enabling each intermediate image to be assigned to a phase of movement. The phase of movement in which the object moved least in the region is then identified by determining the intermediate image having the fewest motion artifacts. Finally, a computer tomographic image of the region is reconstructed, in particular with a high spatial resolution, from measured values whose times of acquisition were situated in the phase of movement in which there was the least movement by the object in said region.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中一束光线穿过周期性移动的物体，特别是心脏。在获取测量值期间，感测到取决于物体的移动的移动信号。从该移动信号周期性地确定重复的移动相位，之后使用其采集时间位于不同移动阶段的测量值来重构物体区域的多个中间图像，特别是以低分辨率，从而能够将每个中间图像分配给运动阶段。然后通过确定具有最少的运动伪像的中间图像来识别目标在该区域中最小移动的移动阶段。最后，该区域的计算机断层图像，特别是具有高的空间分辨率，从获取时间位于运动阶段的测量值中重建，其中所述区域中物体的运动最少。

7. 发明申请

WO2005055828A1 COMPUTER TOMOGRAPHY METHOD FOR PERIODICALLY MOVING OBJECTS 审中-公开
标题翻译：用于定期移动物体的计算机测绘方法
公开(公告)号：WO2005055828A1
公开(公告)日：2005-06-23
申请号：PCT/IB2004/052567
申请日：2004-11-26
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , MANZKE, Robert , HEUSCHER, Dominic J. , GRASS, Michael
发明人： MANZKE, Robert , HEUSCHER, Dominic J. , GRASS, Michael
IPC分类号： A61B6/00
CPC分类号： A61B6/541 , A61B5/0456 , A61B5/1135 , A61B6/027 , A61B6/032 , A61B6/503 , A61B6/504 , G01N23/046 , G01N2223/419 , G06T11/005 , G06T2211/412 , Y10S378/901
摘要： The invention relates to a computer tomography method, in which a periodically moving object, especially a heart, is irradiated by a beam bundle. In that process, intermediate images of one and the same subregion of the object are reconstructed using measured values from time intervals from different periods. That is, in each case exactly one period can be allocated to each intermediate image. The time intervals in the individual periods are adjusted in such a way that, after a reconstruction of the intermediate images using measured values that lie in the adjusted time intervals, a similarity measure applied to the intermediate images of the same subregion is minimized. This method can be applied to one, several or all subregions of the object that are reconstructable using measured values from time intervals from different periods. Finally, a computer tomography image is reconstructed, wherein exclusively measured values from the adjusted time intervals are used.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中周期性移动的物体，特别是心脏被束束照射。在该过程中，使用来自不同周期的时间间隔的测量值重建对象的一个和相同子区域的中间图像。也就是说，在每种情况下，可以将一个周期分配给每个中间图像。调整各个周期中的时间间隔，使得在使用位于调整时间间隔中的测量值重建中间图像之后，应用于相同子区域的中间图像的相似性度量被最小化。可以使用来自不同周期的时间间隔的测量值将该方法应用于可重构的对象的一个，几个或所有子区域。最后，重建计算机断层摄影图像，其中使用来自经调整的时间间隔的专用测量值。

8. 发明申请

WO2010150147A1 SPATIAL AND SHAPE CHARACTERIZATION OF AN IMPLANTED DEVICE WITHIN AN OBJECT 审中-公开
标题翻译：一个对象中的一个嵌入式设备的空间和形状表征
公开(公告)号：WO2010150147A1
公开(公告)日：2010-12-29
申请号：PCT/IB2010/052725
申请日：2010-06-17
申请人： KONINKLIJKE PHILIPS ELECTRONICS N. V. , THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE, CONTRACTIN FOR AND ON BEHALF OF THE UNIVERSITY OF COLORADO HEALTH SCIENCES CENTER , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , NEUBAUER, Anne, M. , GRASS, Michael , CARROLL, John, D. , CHEN, Shiuh-Yung
发明人： NEUBAUER, Anne, M. , GRASS, Michael , CARROLL, John, D. , CHEN, Shiuh-Yung
IPC分类号： G06T7/00 , A61B6/12
CPC分类号： A61B6/12 , G06T7/0014 , G06T17/00 , G06T19/20 , G06T2200/04 , G06T2207/10116 , G06T2207/30048 , G06T2210/21 , G06T2210/41 , G06T2219/2012 , G09B23/28
摘要： It is described a method for spatially characterizing a device positioned within an object, e.g. a patient's body, under examination that e.g. allows a clinician to easily assess the deployment state and position of the device. The method comprises the steps of aquiring (26) a set of images of the device, reconstructing (28) a three-dimensional model of the device from the set of images, comparing (30) the model of the device with an ideal model of the device in a predetermined deployment state inside the object and displaying (36) the model of the device on a display unit. For optical indication deviation areas of the deployed device relative to an ideal model of the deployed device can be determined and color-coded depending on the strength of deviation.
摘要翻译：描述了一种用于空间表征位于对象内的设备的方法，例如，正在检查的患者的身体，例如允许临床医生轻松评估设备的部署状态和位置。该方法包括以下步骤：（26）设备的一组图像，从所述图像集中重建（28）所述设备的三维模型，将所述设备的模型与（30）所述设备的模型与所述设备处于所述对象内部的预定部署状态，并且在所述显示单元上显示（36）所述设备的模型。对于部署设备相对于所部署的设备的理想模型的光学指示偏差区域可以根据偏差的强度来确定和颜色编码。

9. 发明申请

WO2009083864A2 ITERATIVE RECONSTRUCTION OF POLYHEDRAL OBJECTS FROM FEW PROJECTIONS 审中-公开
标题翻译：从少量投影中迭代重建聚合物体
公开(公告)号：WO2009083864A2
公开(公告)日：2009-07-09
申请号：PCT/IB2008/055348
申请日：2008-12-16
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , ERHARD, Klaus , SCHAEFER, Dirk , GRASS, Michael
发明人： ERHARD, Klaus , SCHAEFER, Dirk , GRASS, Michael
IPC分类号： G06T11/00 , G06T17/20
CPC分类号： G06T11/006 , G06T17/20
摘要： A method for fully automatic modelling of medical structures with homogeneous attenuation function from few projections is provided. The object of interest is modelled as a polyhedron with triangular surface mesh. The optimization of both the coordinates of the polyhedral model and the attenuation value of the polyhedral model is performed during a data reconstruction. This results in an attenuation value together with a three-dimensional surface model of the physical structure imaged. Combining several polyhedral models into one compound model, the method may allow for fully automatic modelling of medical structures with piecewise constant attenuation function.
摘要翻译：提供了一种用于从几个投影中获得具有均匀衰减功能的医疗结构的全自动建模的方法。感兴趣的对象被建模为具有三角形表面网格的多面体。在数据重构期间，执行多面体模型的坐标和多面体模型的衰减值的优化。这导致衰减值与被成像的物理结构的三维表面模型一起。将几个多面体模型组合成一个复合模型，该方法可以允许具有分段恒定衰减功能的医疗结构的全自动建模。

10. 发明申请

WO2007069121A1 ADVANCED CONVERGENCE FOR MULTIPLE ITERATIVE ALGORITHM 审中-公开
标题翻译：多元迭代算法的高级收敛
公开(公告)号：WO2007069121A1
公开(公告)日：2007-06-21
申请号：PCT/IB2006/054577
申请日：2006-12-04
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , ZIEGLER, Andy , GRASS, Michael
发明人： ZIEGLER, Andy , GRASS, Michael
IPC分类号： G06T1/60
CPC分类号： G06T11/005 , G06T2211/424
摘要： Iterative methods for reconstructing of three-dimensional images based on projection data signals obtained by a computer tomography system often result in wrong absorption coefficients in particular for regions including a hollow space of an object under examination. Furthermore iterative methods show a slow convergence for calculating such absorption coefficients. According to embodiments of the present invention there is provided a method for an advanced reconstruction of three- dimensional images based on modified projection data signals. The modification includes an addition of a constant absorption value to the measured projection data. Advantageously the constant absorption value is an absorption line integral through a virtual body having the spatial constant absorption coefficient of water. The virtual body preferably has a volume which is slightly bigger than the object of interest.
摘要翻译：基于由计算机断层摄影系统获得的投影数据信号重建三维图像的迭代方法通常导致错误的吸收系数，特别是对于包括被检查物体的中空空间的区域。此外，迭代方法显示计算这种吸收系数的缓慢收敛。根据本发明的实施例，提供了一种基于经修改的投影数据信号对三维图像进行高级重建的方法。修改包括对所测量的投影数据添加恒定的吸收值。有利地，恒定吸收值是通过具有水的空间常数吸收系数的虚拟体积分的吸收线。虚拟体优选地具有比感兴趣对象略大的体积。

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