公开(公告)号：WO2008084413A3

公开(公告)日：2009-06-18

申请号：PCT/IB2008050002

申请日：2008-01-02

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  BONTUS CLAAS ,  GRASS MICHAEL ,  SCHIRRA CARSTEN O ,  VAN STEVENDAAL UDO ,  LAVI GUY

Inventor： BONTUS CLAAS ,  GRASS MICHAEL ,  SCHIRRA CARSTEN O ,  VAN STEVENDAAL UDO ,  LAVI GUY

IPC: G06T7/20

CPC classification number: G06T7/20 ,  A61B5/0402 ,  A61B6/027 ,  A61B6/032 ,  A61B6/469 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541

Abstract: The invention relates to an imaging system for imaging a region of interest comprising a moving object, which moves less in small motion phases than in large motion phases. Detection values are provided and a small motion determination unit (15) determines the motion of the object in the region of interest in the small motion phases from the 5 detection values. A large motion determination unit (16) determines the motion of the object in the large motion phases from the determined motion of the object in the small motion phases. A reconstruction unit (17) reconstructs an image of the region of interest from the detection values, wherein the reconstruction unit (17) is adapted for performing a motion compensation using the determined motions in the small and large motion phases.

Abstract translation: 本发明涉及一种用于对感兴趣的区域成像的成像系统，该成像系统包括移动物体，该运动物体在小运动相位上比在大运动相位中运动较少。 提供检测值，并且小运动确定单元（15）从5个检测值确定在小运动相位中的感兴趣区域中的对象的运动。 大运动确定单元（16）根据所确定的小运动阶段中的物体的运动来确定物体在大运动相位中的运动。 重建单元（17）从检测值重建感兴趣区域的图像，其中重建单元（17）适于使用在小的和大的运动阶段中确定的运动来执行运动补偿。

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

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  PROKSA ROLAND ,  THRAN AXEL ,  GRASS MICHAEL

Inventor： PROKSA ROLAND ,  THRAN AXEL ,  GRASS MICHAEL

IPC: A61B6/03

CPC classification number: A61B6/4014 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/503 ,  A61B6/508 ,  G01T1/1644 ,  H01J2235/00

Abstract: 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°.

Abstract translation: 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。

公开(公告)号：WO2008026153A3

公开(公告)日：2008-07-17

申请号：PCT/IB2007053442

申请日：2007-08-28

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  BONTUS CLAAS ,  GRASS MICHAEL ,  KOEHLER THOMAS

Inventor： BONTUS CLAAS ,  GRASS MICHAEL ,  KOEHLER THOMAS

IPC: A61B6/03

CPC classification number: A61B6/032 ,  A61B6/027

Abstract: The present invention relates to an imaging system for imaging a field of interest, in particular to a computed tomography system. The imaging system comprises an irradiation unit (2) which moves relative to a field of interest along a first trajectory (501) and along a second trajectory (503). While the irradiation unit (2) moves along the first trajectory (501), first detection data are acquired and, while the irradiation unit (2) moves along the second trajectory (503), second detection data are acquired. An intermediate image of the field of interest is reconstructed from at least the second detection data, and virtual detection data are determined by forward projection through the intermediate image. Finally, an image of the field of interest is reconstructed from the first detection data and the virtual detection data.

Abstract translation: 本发明涉及一种用于对感兴趣的区域成像的成像系统，具体涉及一种计算机断层摄影系统。 该成像系统包括照射单元（2），其沿着第一轨迹（501）并且沿着第二轨迹（503）相对于感兴趣的区域移动。 在照射单元（2）沿着第一轨道（501）移动期间，获取第一检测数据，并且在照射单元（2）沿着第二轨迹（503）移动的同时获取第二检测数据。 至少从第二检测数据重构感兴趣区域的中间图像，并且通过经由中间图像的前向投影来确定虚拟检测数据。 最后，根据第一检测数据和虚拟检测数据重建感兴趣区域的图像。

公开(公告)号：WO2007031899A3

公开(公告)日：2008-04-17

申请号：PCT/IB2006053055

申请日：2006-09-01

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  GRASS MICHAEL ,  ZIEGLER ANDY ,  NIELSEN TIM

Inventor： GRASS MICHAEL ,  ZIEGLER ANDY ,  NIELSEN TIM

IPC: A61B6/03 ,  G06T5/00 ,  G06T5/50 ,  G06T11/00

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/541 ,  G06T11/006 ,  G06T2211/412 ,  G06T2211/424

Abstract: The increasing cone angle of current high-end and future CT systems leads to a decrease in image quality if approximate cone-beam reconstruction methods are used. According to an exemplary embodiment of the present invention, an iterative four-dimensional cardiac CT reconstruction is provided, in which phase volumes are selected from the four-dimensional data set, each having the same spatial volume at different phase points. Corresponding voxels inside these phase volumes are then forward projected onto the same projection. After calculation of a different projection, these voxels are updated. This may provide for an efficient implementation of an iterative four-dimensional cardiac cone-beam CT reconstruction.

Abstract translation: 目前的高端和未来CT系统的锥角越来越大，如果使用近似锥束重建方法，则会导致图像质量下降。 根据本发明的示例性实施例，提供了一种迭代的四维心脏CT重建，其中从四维数据集中选择相位体积，每个四维数据集在不同相位处具有相同的空间体积。 然后将这些相位体积内的相应体素向前投影到相同的投影上。 在计算了不同的投影之后，这些体素被更新。 这可以提供迭代四维心脏锥束CT重建的有效实施。

公开(公告)号：WO2007072286A3

公开(公告)日：2007-10-18

申请号：PCT/IB2006054727

申请日：2006-12-11

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  GRASS MICHAEL ,  KOEHLER THOMAS

Inventor： GRASS MICHAEL ,  KOEHLER THOMAS

IPC: G06T11/00

CPC classification number: A61B6/032 ,  A61B6/541 ,  G06T11/005 ,  G06T2211/412

Abstract: 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.

Abstract translation: 根据示例性实施例，感兴趣对象的图像数据的移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运动矢量场数据层。 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在投影上应用二维运动补偿来生成运动补偿投影数据，并且通过返回生成至少一个体素的图像数据 - 投影运动补偿投影数据。

公开(公告)号：WO2005018457A8

公开(公告)日：2007-02-15

申请号：PCT/IB2004051432

申请日：2004-08-10

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  GRASS MICHAEL ,  RASCHE VOLKER

Inventor： GRASS MICHAEL ,  RASCHE VOLKER

IPC: A61B6/00

CPC classification number: A61B6/481 ,  A61B6/4441 ,  A61B6/466 ,  A61B6/504 ,  A61B6/541

Abstract: The invention relates to a method and a device for the three-dimensional reconstruction of the flow conditions in a vascular system (3), in which, in a first phase after the beginning of a contrast-medium injection, X-ray projection pictures are produced from the same direction (A) at a high picture-taking rate in order to observe the inflow of the contrast medium. When the contrast medium fills the vascular system (3), a rotation of the X­ray device (1) takes place during which projection pictures are produced at a lower picture­taking rate and/or at a lower radiation dose, from which pictures the three-dimensional structure of the vascular tree can be reconstructed. Optionally, at the end of the rotation, projection pictures may again be taken from a fixed direction that observe the drainage of the contrast medium from the vascular system (3).

Abstract translation: 本发明涉及一种用于三维重建血管系统（3）中的流动状态的方法和装置，其中在开始造影剂注射后的第一阶段，X射线投影图像是 以相同的方向（A）以高拍摄速度产生，以观察造影剂的流入。 当造影剂填充血管系统（3）时，发生X射线装置（1）的旋转，在此期间以较低的拍摄速度和/或较低的辐射剂量产生投影图像，从该图像的三维 可以重建血管树的结构。 可选地，在旋转结束时，投影图片可以再次从观察造影剂从血管系统（3）排出的固定方向获取。

公开(公告)号：WO2013068877A3

公开(公告)日：2013-10-24

申请号：PCT/IB2012055968

申请日：2012-10-29

Applicant: KONINKL PHILIPS NV ,  PHILIPS INTELLECTUAL PROPERTY

Inventor： GRASS MICHAEL ,  MANZKE ROBERT ,  CHAN RAYMOND

IPC: G01T1/161

CPC classification number: A61N5/1067 ,  A61B6/12 ,  A61N5/1071 ,  G01T1/023 ,  G01T1/161

Abstract: The present invention relates to a sensor device for detecting dose of radiation received at the sensor device, the sensor device comprising a flexible body having a cross- section being comparatively small relative to the length of the device, a cladding at the flexible body, the cladding converting incoming radiation into visible light, and an optical shape sensing device disposed within the flexible body and configured to determine a shape of the flexible instrument relative to a reference, the shape sensing device configured to collect information based on its configuration to map an intraluminal structure during a procedure. The present invention further relates to a radiation therapy system including such a sensor device and a method of operating a radiation therapy system including such a sensor device.

Abstract translation: 传感器装置技术领域本发明涉及一种用于检测在传感器装置处接收到的辐射的剂量的传感器装置，该传感器装置包括具有相对于装置的长度相对小的横截面的柔性主体，在柔性主体处的包层， 包层将入射辐射转换成可见光;以及光学形状感测装置，设置在所述柔性主体内并且被配置为确定所述柔性装置相对于基准的形状，所述形状感测装置配置为基于其配置收集信息以映射腔内 程序中的结构。 本发明还涉及一种包括这种传感器装置的放射治疗系统和一种操作包括这种传感器装置的放射治疗系统的方法。

公开(公告)号：WO2011148277A3

公开(公告)日：2012-02-23

申请号：PCT/IB2011051793

申请日：2011-04-25

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  HANSIS EBERHARD S ,  SCHAEFER DIRK ,  GRASS MICHAEL

Inventor： HANSIS EBERHARD S ,  SCHAEFER DIRK ,  GRASS MICHAEL

IPC: G06T11/00

CPC classification number: G06T11/008 ,  G06T11/006 ,  G06T2211/432

Abstract: Computed tomography (CT) reconstruction includes reconstructing an axially extended reconstructed image from a measured cone beam x-ray projection data set (Pm), optionally having an off-center geometry. The reconstructing is performed for an extended volume (eFOV) comprising a reconstructable volume (rFOV) of the measured cone beam x ray data set that is extended along the axial direction. The projection data set may be weighted in the volume domain. Iterative reconstruction may be used, including initializing a constant volume and performing one or more iterations employing a first iterative update followed by one or more iterations employing a second, different iterative update. Alternatively, backprojection filtration (BPF) reconstruction may be used, including transforming the projection data set to a new geometry including finite differences between neighboring projection views and performing BPF using Hilbert filtering along a plurality of different directions and averaging the resultant reconstructed images to generate the final reconstructed image.

Abstract translation: 计算机断层扫描（CT）重建包括从测量的锥形束X射线投影数据集（Pm）重建轴向延伸的重建图像，可选地具有偏心几何。 对包括沿轴向延伸的测量的锥形束x射线数据集的可重建体积（rFOV）的扩展体积（eFOV）进行重建。 投影数据集可以在体积域中加权。 可以使用迭代重建，包括初始化恒定体积并且使用第一迭代更新执行一个或多个迭代，随后使用第二，不同迭代更新的一个或多个迭代。 或者，可以使用反投影过滤（BPF）重建，包括将投影数据集变换为包括相邻投影视图之间的有限差异的新几何，并且使用沿着多个不同方向的希尔伯特滤波来执行BPF，并平均所得到的重建图像以产生 最终重建图像。

公开(公告)号：WO2009136360A3

公开(公告)日：2011-11-10

申请号：PCT/IB2009051835

申请日：2009-05-05

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  JANDT UWE ,  SCHAEFER DIRK ,  GRASS MICHAEL

Inventor： JANDT UWE ,  SCHAEFER DIRK ,  GRASS MICHAEL

IPC: G06T11/00 ,  A61B6/00 ,  G06T7/00

CPC classification number: G06T11/005 ,  G06T7/564 ,  G06T2211/412

Abstract: The present invention relates to an apparatus for generating an image of a moving object, wherein a movement of the object comprises a multiple of moving phases. The apparatus comprises a measured detection data providing unit (20) for providing measured detection data of the moving object, which have been detected by using a detection process and which are assigned to the moving phases. The apparatus comprises further a reconstruction unit (13) for reconstructing an image object of the object from the provided measured detection data and an adaptation unit (18) for adapting the image object for different moving phases such that simulated detection data are adapted to the measured detection data of the respective moving phase, wherein the simulated detection data are determined by simulating the detection process, which has been used for detecting the measured detection data assigned to the respective moving phase, with the image object.

Abstract translation: 本发明涉及一种用于生成移动物体的图像的装置，其中物体的移动包括多个移动相位。 该装置包括测量检测数据提供单元（20），用于提供已经通过使用检测处理检测并被分配给运动相位的移动物体的测量检测数据。 所述设备还包括用于根据所提供的测量的检测数据重构对象的图像对象的重建单元（13）和用于使图像对象适应不同的移动阶段的适配单元（18），使得模拟的检测数据适应于所测量的 检测数据，其中通过模拟已经用于检测分配给各个运动相位的测量检测数据的检测过程与图像对象来确定模拟检测数据。

公开(公告)号：WO2008135946A3

公开(公告)日：2009-03-12

申请号：PCT/IB2008051737

申请日：2008-05-05

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  GRASS MICHAEL ,  VON BERG JENS

Inventor： GRASS MICHAEL ,  VON BERG JENS

IPC: A61B6/00

CPC classification number: A61B6/504 ,  A61B6/481 ,  A61B6/503

Abstract: It is described a method for coronary artery selective calcium assignment by computed tomography, wherein the method comprising the steps of performing a low x-ray dose cardiac calcium scoring scan, obtaining a data set of said cardiac calcium scoring scan, generating reconstructed images from the data set of said cardiac calcium scoring scan, analyzing the reconstructed images for segmented calcium deposits, deriving a data set of calcification from the analysis, wherein a cardiac model is adapted to the reconstructed image such that segmented calcium deposits can be assigned to specific areas of the heart. Further a device (100) for performing a method for coronary artery selective calcium assignment by computed tomography according to the inventive method is described, wherein the device (100) comprises a CT unit (10) for performing a low x-ray dose cardiac calcium scoring scan; an acquisition unit (20) for obtaining a data set of said cardiac calcium scoring scan; a generation unit (30) for generating reconstructed images from the data set of said cardiac calcium scoring scan; an analyzing unit (40) for analyzing the reconstructed images for segmented calcium deposits; a deriving unit (50) for deriving a data set of calcification from the analysis.

Abstract translation: 描述了通过计算机断层摄影术进行冠状动脉选择性钙分配的方法，其中所述方法包括以下步骤：执行低X射线剂量心脏钙评分扫描，获得所述心脏钙评分扫描的数据集，从 所述心脏钙评分扫描的数据集，分析分割钙沉积物的重建图像，从分析中导出钙化数据集，其中心脏模型适用于重建图像，使得分割的钙沉积物可被分配到 心脏 此外，描述了根据本发明的方法通过计算机断层摄影执行冠状动脉选择性钙分配方法的装置（100），其中所述装置（100）包括用于执行低x射线剂量心脏钙的CT单元（10） 得分扫描; 获取单元（20），用于获取所述心脏钙评分扫描的数据集; 用于从所述心脏钙评分扫描的数据集中产生重建图像的生成单元（30）; 分析单元（40），用于分析用于分割的钙沉积物的重建图像; 用于从分析中导出钙化数据集的导出单元（50）。