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1. 发明申请

WO2004036502A1 FORMATION OF A 4D (3D+T) IMAGE DATA SET OF A MOVING TUBULAR STRUCTURE 审中-公开
标题翻译：形成运动管状结构的4D（3D + T）图像数据集
公开(公告)号：WO2004036502A1
公开(公告)日：2004-04-29
申请号：PCT/IB2003/004413
申请日：2003-10-08
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , MOVASSAGHI, Babak , RASCHE, Volker , GRASS, Michael
发明人： MOVASSAGHI, Babak , RASCHE, Volker , GRASS, Michael
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , G06T2211/412
摘要： The invention relates to a method and a device suitable for the formation of a 4D image data set of a three-dimensional tubular structure of an object to be examined, being subject to a periodic motion, from a number of 2D projection images (D) of the tubular structure which have been acquired from different projection directions and in different phases of motion, the periodic motion being represented by a motion signal (E) acquired in parallel with the acquisition of the 2D projection images (D). In order to obtain an as accurate as possible 4D image data set, in accordance with the invention it is proposed to determine 2D center line points (Z) in tubular structure elements (H) in at least two 2D projection images (D) of a first phase of motion, to extract therefrom a first model of 3D center line points (M) and to project these points into further 2D projection images (D) of other phases of motion. The 3D center line points (M) projected therein are automatically registered, so that ultimately the course of the tubular structure element (H) in the individual 2D projection images (D) is obtained, ultimately allowing the reconstruction of 3D images of the tubular structure in different phases of motion. The method in accordance with the invention is preferably used for the formation of a 4D image data set of the coronary vessels of a patient.
摘要翻译：本发明涉及一种适于从多个2D投影图像（D）形成待检查物体的三维管状结构的4D图像数据集的方法和装置，其被进行周期性运动，已经从不同的投影方向和不同运动阶段获取的管状结构，周期运动由与2D投影图像（D）的获取并行获取的运动信号（E）表示。为了获得尽可能准确的4D图像数据集，根据本发明，建议在至少两个2D投影图像（D）中确定管状结构元件（H）中的2D中心线点（Z）第一阶段的运动，从中提取3D中心线点（M）的第一模型，并将这些点投影到其他运动阶段的另外的2D投影图像（D）中。投影在其中的3D中心线点（M）被自动登记，从而最终获得单个2D投影图像（D）中的管状结构元件（H）的过程，最终允许重建管状结构的3D图像在不同的运动阶段。根据本发明的方法优选用于形成患者的冠状血管的4D图像数据集。

2. 发明申请

WO2007138526A3 HIERARCHICAL MOTION ESTIMATION 审中-公开
公开(公告)号：WO2007138526A3
公开(公告)日：2007-12-06
申请号：PCT/IB2007/051915
申请日：2007-05-21
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , SCHÄFER, Dirk , ENGLER, Andreas , MOVASSAGHI, Babak , RASCHE, Volker , GRASS, Michael
发明人： SCHÄFER, Dirk , ENGLER, Andreas , MOVASSAGHI, Babak , RASCHE, Volker , GRASS, Michael
IPC分类号： A61B6/00 , A61B6/03 , G06T3/00 , G06T7/00 , G06T7/20
摘要： In three-dimensional rotational x-ray coronary imaging problems may arise when estimating the motion of small vessels. According to an exemplary embodiment of the present invention, an examination apparatus is provided which is adapted for performing a hierarchical motion estimation by global affine transformation for every heart phase, followed by vessel branch selective affine and non-affine transformations. This may provide for an improved image quality.

3. 发明申请

WO2003105017A3 ANALYSIS OF A MULTI-DIMENSIONAL STRUCTURE 审中-公开
公开(公告)号：WO2003105017A3
公开(公告)日：2003-12-18
申请号：PCT/IB2003/002161
申请日：2003-05-21
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , RASCHE, Volker , MOVASSAGHI, Babak , GRASS, Michael
发明人： RASCHE, Volker , MOVASSAGHI, Babak , GRASS, Michael
IPC分类号： G06T7/00
摘要： A method is provided for analysis of a multi-dimensional structure which includes a tubular structure from two-dimensional datasets for respective pre-determined projection directions. A pair of corresponding initial projected centre points of the tubular structure is identified in two respective initial and further two-dimensional datasets.Projected edges of the tubular structure in said initial two-dimensional datasets and in said further two-dimensional dataset near the respective projected centre points are identified. A local size of the tubular structure is derived at the three-dimensional spatial position of the centre point of the tubular structure from said projected edges and the predetermined projection directions.

4. 发明申请

WO2003105017A2 ANALYSIS OF A MULTI-DIMENSIONAL STRUCTURE 审中-公开
标题翻译：多维结构分析
公开(公告)号：WO2003105017A2
公开(公告)日：2003-12-18
申请号：PCT/IB2003/002161
申请日：2003-05-21
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , RASCHE, Volker , MOVASSAGHI, Babak , GRASS, Michael
发明人： RASCHE, Volker , MOVASSAGHI, Babak , GRASS, Michael
IPC分类号： G06F15/60
CPC分类号： G06T7/60 , G06T7/593 , G06T2207/30101 , Y10S128/922
摘要： A method is provided for analysis of a multi-dimensional structure which includes a tubular structure from two-dimensional datasets for respective pre-determined projection directions. A pair of corresponding initial projected centre points of the tubular structure is identified in two respective initial and further two-dimensional datasets.Projected edges of the tubular structure in said initial two-dimensional datasets and in said further two-dimensional dataset near the respective projected centre points are identified. A local size of the tubular structure is derived at the three-dimensional spatial position of the centre point of the tubular structure from said projected edges and the predetermined projection directions.
摘要翻译：提供了一种用于分析多维结构的方法，其包括用于各个预定投影方向的二维数据集的管状结构。管状结构的一对对应的初始投影中心点在两个相应的初始和另外的二维数据集中被识别。所述初始二维数据集中的所述管状结构的边缘以及所述另外的二维数据集中的相应投影确定中心点。在管状结构的中心点从所述投影边缘和预定投影方向的三维空间位置导出管状结构的局部尺寸。

5. 发明申请

WO2004068412A1 METHOD FOR THE RECONSTRUCTION OF THREE-DIMENSIONAL OBJECTS 审中-公开
标题翻译：重建三维物体的方法
公开(公告)号：WO2004068412A1
公开(公告)日：2004-08-12
申请号：PCT/IB2004/000185
申请日：2004-01-23
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , WEESE, Jürgen , RASCHE, Volker , YOUNG, Stewart , MOVASSAGHI, Babak
发明人： WEESE, Jürgen , RASCHE, Volker , YOUNG, Stewart , MOVASSAGHI, Babak
IPC分类号： G06T7/00
CPC分类号： G06T7/11 , G06T7/55 , G06T2207/10121 , G06T2207/20156 , G06T2207/30101
摘要： The invention relates to a method for the computer-aided reconstruction of a three-dimensional anatomical object (3) from diagnostic image data. First of all, a diagnostic image data set of the object (3) is acquired. Then a seed point (5) is set, starting from which the object is reconstructed within a reconstruction volume (4). Thereafter, an adjacent point of the reconstruction volume (4) likewise belonging to the object (3) is located in accordance with a propagation criterion, which is calculated by means of a mathematical analysis of local areas (6, 7), assigned to the point concerned, of the image data set. Reconstruction of the three-dimensional structure of the object (3) is then performed within the reconstruction volume (4) by multiple repetition of this method step and propagation along the located adjacent points. To apply such a reconstruction method to image data obtained by means of rotational X-ray imaging, wherein a plurality of two-dimensional projection images (1, 2) are recorded from different projection directions, the invention proposes that the propagation criterion be calculated by subjecting the local image areas (6, 7) of the two-dimensional projection images (1, 2) in each case individually to the mathematical analysis.
摘要翻译：本发明涉及一种用于从诊断图像数据计算机辅助重构三维解剖体（3）的方法。首先，获取对象（3）的诊断图像数据集。然后设置种子点（5），从重建体积（4）中重建对象开始。此后，同样属于对象（3）的重构体积（4）的相邻点根据通过局部区域（6,7）的数学分析计算的传播标准来定位，分配给关注图像数据集。然后通过该方法步骤的多次重复和沿着定位的相邻点的传播，在重构体积（4）内重构物体（3）的三维结构。为了将这种重建方法应用于通过旋转X射线成像获得的图像数据，其中从不同的投影方向记录多个二维投影图像（1,2），本发明提出传播准则由在每种情况下对二维投影图像（1,2）的局部图像区域（6,7）进行数学分析。

6. 发明申请

WO2004081877A1 MOTION-CORRECTED THREE-DIMENSIONAL VOLUME IMAGING METHOD 审中-公开
标题翻译：运动校正三维体积成像方法
公开(公告)号：WO2004081877A1
公开(公告)日：2004-09-23
申请号：PCT/IB2004/050239
申请日：2004-03-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , RASCHE, Volker , MOVASSAGHI, Babak , BOOSTEN, Marcel
发明人： RASCHE, Volker , MOVASSAGHI, Babak , BOOSTEN, Marcel
IPC分类号： G06T11/00
CPC分类号： A61B6/5264 , A61B6/00 , A61B6/503 , A61B6/508 , A61B6/541 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/404 , G06T2211/412
摘要： An X-ray imaging method forms a set of a plurality of two-dimensional X-Ray projection images of a medical or veterinary object to be examined through a scanning rotation by an X-Ray source viz à viz the object. Such X-Ray images are acquired at respective predetermined time instants with respect to a functionality process produced by the object. From said set of X-Ray projection images by back-projection a three-dimensional volume image of the object is reconstructed. In particular, an appropriate motion correction is derived for the respective two-dimensional images, and subsequently as based on a motion vector field from the various corrected two-dimensional images the intended three-dimensional volume is reconstructed.
摘要翻译： X射线成像方法通过由X射线源进行扫描旋转来形成待检查的医疗或兽医物体的多个二维X射线投影图像的集合，即X射线源。相对于由对象产生的功能处理，在相应的预定时刻获取这样的X射线图像。通过反投影从所述X射线投影图像组中重构对象的三维体积图像。特别地，针对相应的二维图像导出适当的运动校正，并且随后基于来自各种校正的二维图像的运动矢量场来重建预期的三维体积。

7. 发明申请

WO2005027051A1 IMAGING PROCESS AND DEVICE 审中-公开
标题翻译：成像过程和设备
公开(公告)号：WO2005027051A1
公开(公告)日：2005-03-24
申请号：PCT/IB2004/051782
申请日：2004-09-16
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , GRASS, Michael , RASCHE, Volker
发明人： GRASS, Michael , RASCHE, Volker
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , A61B6/027
摘要： The invention relates to an imaging process with a beam source attached at a first end of an holder device, and with a detector unit attached to a second end of the holder device. The holder device is moved so that the beam source is guided about an examination area along a non-circular trajectory, where the beams emitted by the beam source pass through the examination area. The detector unit acquires measurement values which depend on the intensity of the beams on the far side of the examination area. From these measurement values using a filtered back projection an image of the examination area can be reconstructed, where each measurement value is filtered along a filter line which runs parallel to the tangent of the trajectory at the respective position of the beam source.
摘要翻译：本发明涉及一种成像过程，其中束源连接在保持器装置的第一端，并且检测器单元附接到保持器装置的第二端。保持器装置被移动，使得束源沿着非圆形轨迹围绕检查区域被引导，其中由光束源发射的光束通过检查区域。检测器单元获取取决于在检查区域的远侧的光束的强度的测量值。从使用滤波反投影的这些测量值可以重建检查区域的图像，其中每个测量值沿着平行于光束源的相应位置处的轨迹的切线延伸的滤波器线被滤波。

8. 发明申请

WO2006003578A1 EXAMINATION APPARATUS FOR PERFUSION STUDIES 审中-公开
标题翻译：检查设备用于灌注研究
公开(公告)号：WO2006003578A1
公开(公告)日：2006-01-12
申请号：PCT/IB2005/052095
申请日：2005-06-24
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , GRASS, Michael , RASCHE, Volker
发明人： GRASS, Michael , RASCHE, Volker
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/404 , G06T2211/412 , G06T2211/416
摘要： The invention relates to an examination apparatus and a method for perfusion studies in a patient (1). According to the method, a rotational X-ray device (10) is moved on a closed, preferably non-planar trajectory (T) while continuously generating projections of the patient (1) after the injection of a contrast agent with an injection device (20). The projections are used by a data processing system (30) in a sliding window technique to reconstruct three-dimensional images of the body volume. The resulting sequence of 3D images may be displayed on a monitor (31) to reveal the desired information about the perfusion process.
摘要翻译：本发明涉及一种用于患者（1）中的灌注研究的检查装置和方法。根据该方法，旋转X射线装置（10）在闭合的，优选非平面的轨迹（T）上移动，同时在用注射装置注射造影剂之后连续产生患者（1）的突起 20）。数据处理系统（30）在滑动窗口技术中使用投影来重建身体体积的三维图像。所得到的3D图像序列可以显示在监视器（31）上，以显示关于灌注过程的期望信息。

9. 发明申请

WO2006018817A2 APPARATUS FOR THE EVALUATION OF ROTATIONAL X-RAY PROJECTIONS 审中-公开
标题翻译：评估旋转X射线投影的装置
公开(公告)号：WO2006018817A2
公开(公告)日：2006-02-23
申请号：PCT/IB2005/052714
申请日：2005-08-17
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , GRASS, Michael , RASCHE, Volker
发明人： GRASS, Michael , RASCHE, Volker
IPC分类号： A61B6/03
CPC分类号： A61B6/481 , A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/4441 , A61B6/463 , A61B6/466 , A61B6/482 , A61B6/504
摘要： The invention relates to a method and an examination apparatus for the evaluation of X-ray projections (31-33, 41-43) that were generated with a rotational X-ray device (10) from different directions and with an energy level varying periodically from projection to projection. Said variation may for example be achieved by a continuously modulated tube voltage (V). Two different 3D-images (35, 45) may be reconstructed from the X-ray projections (31-33, 41-43) which belong to the different energy levels, and said 3D-images may then be compared voxel by voxel in order to segment structures (50) of interest due to contrast differences.
摘要翻译：本发明涉及一种用于评估由不同方向用旋转X射线装置（10）产生的X射线投射（31-33,41-43）的方法和检查装置，其能量级周期性变化从投影到投影。所述变化例如可以通过连续调制的管电压（V）来实现。可以从属于不同能量级的X射线投影（31-33,41-43）重建两个不同的3D图像（35,45），然后可以按照体素的顺序将所述3D图像与体素进行比较由于对比度差异来分割感兴趣的结构（50）。

10. 发明申请

WO2004114221A1 DEVICE TO GENERATE A THREE-DIMENSIONAL IMAGE OF A MOVED OBJECT 审中-公开
标题翻译：用于生成移动对象的三维图像的设备
公开(公告)号：WO2004114221A1
公开(公告)日：2004-12-29
申请号：PCT/IB2004/050923
申请日：2004-06-16
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , MOVASSAGHI, Babak , RASCHE, Volker
发明人： MOVASSAGHI, Babak , RASCHE, Volker
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , G06T2211/404 , G06T2211/412
摘要： The invention relates to a method and a device for generating a threedimensional image of an object (9) such as in particular the heart, from a series of (X-ray) projection pictures (P i , P j , P k , P l ). For the reconstruction only those projection pictures are used in which the projection lines (l i , l k , l l ) of a characteristic object feature intersect at approximately the same spatial point ( r 0 ). The characteristic object feature can in particular be a vessel branch which can easily be located on the projection pictures.
摘要翻译：本发明涉及从一系列（X射线）投影图像（Pi，Pj，Pk，Pl）生成诸如特别是心脏的物体（9）的三维图像的方法和装置。对于重构，仅使用投影图像，其中特征对象特征的投影线（li，lk，ll）在大致相同的空间点（r0）处相交。特征对象特征可以特别地是可以容易地位于投影图像上的血管分支。

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