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    METHOD AND DEVICE FOR ANALYSING A REGION OF INTEREST IN AN OBJECT USING X-RAYS
    51.
    发明授权
    METHOD AND DEVICE FOR ANALYSING A REGION OF INTEREST IN AN OBJECT USING X-RAYS 有权
    利用X射线分析对象中的感兴趣区域的方法和装置

    公开(公告)号：EP2652487B1

    公开(公告)日：2018-02-21

    申请号：EP11805207.5

    申请日：2011-12-05

    申请人： Koninklijke Philips N.V. ,  Philips Intellectual Property & Standards GmbH

    发明人： CARLSEN, Ingwer-Curt ,  KOEHLER, Thomas ,  MARTENS, Gerhard ,  RÖSSL, Ewald ,  WIEMKER, Rafael

    IPC分类号： G01N23/04 ,  G01N23/20

    CPC分类号： G06T7/0012 ,  G01N23/046 ,  G01N2223/419

    摘要： A method and a device for analyzing a region of interest in an object is proposed. The method comprises: (a) providing measurement data by a differential phase contrast X-ray imaging system, and (b) analyzing characteristics of the object in the region of interest. Therein, the measurement data comprise a 2-dimensional or 3-dimensional set of pixels wherein for each pixel the measurement data comprises three types of image data spatially aligned with each other, including (i) absorption representing image data A, (ii) differential phase contrast representing image data D, and (iii) coherence representing image data C. The analyzing step is based, for each pixel, on a combination of at least two of information comprised in the absorption representing image data A and information comprised in the differential phase contrast representing image data D and information comprised in the coherence representing image data C.

    START IMAGE FOR SPECTRAL IMAGE ITERATIVE RECONSTRUCTION
    54.
    发明公开
    START IMAGE FOR SPECTRAL IMAGE ITERATIVE RECONSTRUCTION 审中-公开
    光谱图像迭代重建的开始图像

    公开(公告)号：EP3210192A1

    公开(公告)日：2017-08-30

    申请号：EP15787021.3

    申请日：2015-10-12

    申请人： Koninklijke Philips N.V.

    发明人： PROKSA, Roland ,  KOEHLER, Thomas

    IPC分类号： G06T11/00

    CPC分类号： G06T11/006 ,  G06T2211/408 ,  G06T2211/424

    摘要： A computing system (116) includes a reconstruction processor (114) configured to execute computer readable instructions, which cause the reconstruction processor to: receive, in electronic format, non-spectral projection data, reconstruct the non-spectral projection data to generate a non-spectral image, retrieve a non-spectral to spectral voxel value map for a basis material of interest from a set of non-spectral to spectral voxel value maps, generate a spectral iterative reconstruction start image based on the non-spectral image and the non-spectral to spectral voxel value map, and reconstruct a spectral image, in electronic format, for the material basis of interest from the non-spectral projection data with a spectral iterative reconstruction algorithm and the spectral iterative reconstruction start image.

    摘要翻译： 一种计算系统（116）包括被配置为执行计算机可读指令的重构处理器（114），所述计算机可读指令使得重建处理器：以电子格式接收非光谱投影数据，重建非光谱投影数据以生成非光谱投影数据 - 从一组非光谱到光谱体素值映射中检索感兴趣的基础材料的非光谱到光谱体素值映射，基于非光谱图像和非光谱图像生成光谱迭代重建开始图像 光谱体素值映射，并且利用光谱迭代重建算法和光谱迭代重建开始图像，以电子格式重建来自非光谱投影数据的感兴趣的物质基础的光谱图像。

    X-RAY IMAGING DEVICE
    55.
    发明公开
    X-RAY IMAGING DEVICE 审中-公开
    X射线成像装置

    公开(公告)号：EP3169239A1

    公开(公告)日：2017-05-24

    申请号：EP15734376.5

    申请日：2015-07-07

    申请人： Koninklijke Philips N.V.

    发明人： KOEHLER, Thomas ,  ROESSL, Ewald

    IPC分类号： A61B6/03 ,  A61B6/06

    CPC分类号： A61B6/4035 ,  A61B6/0414 ,  A61B6/06 ,  A61B6/4208 ,  A61B6/4291 ,  A61B6/4429 ,  A61B6/4435 ,  A61B6/484 ,  A61B6/502 ,  A61B6/54 ,  G01N23/083

    摘要： The invention relates to X-ray imaging. In order to improve flexibility, for example in relation with phase-contrast imaging, the X-ray imaging device (10) comprises an X-ray source arrangement for providing an X-ray beam (11). Further, it is provided at least one grating (13, 14) and a line detector (15) with a plurality of sensor lines, which sensor lines are each provided by a plurality of sensor elements, and which sensor lines are provided for detecting respective portions of the X-ray beam (11) passing the at least one grating during operation. The X-ray imaging device is arranged for moving the line detector (15) and an object (21) to be imaged relative to each other, such that in response to the portions of the X-ray beam a number of interference patterns are detectable at respective different relative positions of the line detector and the object for reconstructing an image of the object (21). The at least one grating (13, 14) comprises at least one first segment (161) and at least one second segment (162) arranged adjacent to each other in a direction perpendicular to the direction of the line detector (15). The X-ray imaging device is arranged for moving the line detector (15) and the at least one grating relative to each other between at least a first relative position and a second relative position, such that in the first relative position, a portion of the X-ray beam (11) during operation passes through the at least one first segment (161), while the at least one second segment (162) is arranged outside said portion of the X-ray beam (11), and that in the second relative position, said portion of the X-ray beam (11) during operation passes through the at least one second segment (162), while the at least one first segment (161) is arranged outside said portion of the X-ray beam (11).

    摘要翻译： 本发明涉及X射线成像。 为了提高灵活性，例如与相位对比成像相关，X射线成像装置（10）包括用于提供X射线束（11）的X射线源装置。 此外，提供具有多个传感器线路的至少一个光栅（13,14）和线路检测器（15），所述传感器线路分别由多个传感器元件提供，并且所述传感器线路被设置用于分别检测 在操作期间X射线束（11）的部分通过至少一个光栅。 X射线成像装置被布置用于相对于彼此移动线检测器（15）和待成像的物体（21），使得响应于X射线束的部分，可检测到多个干涉图案 在线检测器和用于重建物体（21）的图像的物体的相应不同相对位置处。 所述至少一个光栅（13,14）包括在垂直于所述线检测器（15）的方向的方向上彼此相邻布置的至少一个第一段（161）和至少一个第二段（162）。 X射线成像装置被布置用于在至少第一相对位置和第二相对位置之间相对于彼此移动线检测器（15）和至少一个光栅，使得在第一相对位置中， 在操作期间，X射线束（11）穿过至少一个第一段（161），而至少一个第二段（162）布置在X射线束（11）的所述部分的外部，并且在 在所述X射线束（11）的所述部分穿过所述至少一个第二段（162）的同时，所述至少一个第一段（161）布置在所述X射线束（11）的所述部分的外部， （11）。

    IMAGE GENERATION APPARATUS
    57.
    发明公开
    IMAGE GENERATION APPARATUS 审中-公开
    图像生成装置

    公开(公告)号：EP3123446A1

    公开(公告)日：2017-02-01

    申请号：EP15710205.4

    申请日：2015-03-18

    申请人： Koninklijke Philips N.V.

    发明人： KOEHLER, Thomas ,  THRAN, Axel ,  BERGNER, Frank ,  BRENDEL, Bernhard Johannes ,  BIPPUS, Rolf Dieter

    IPC分类号： G06T11/00

    摘要： The invention relates to an image generation apparatus (1) for generating an image of an object. A reconstruction unit (10) reconstructs the image based on provided measured projection values such that costs defined by a cost function are reduced, wherein the cost function depends on differences between calculated projection values, which have been determined by simulating a forward projection through the image, and the provided measured projection values, and wherein a degree of dependence of the cost function on a respective difference depends on the respective difference. This can allow for a consideration of a degree of disturbance of the measured projection values by motion and/or by an incomplete illumination of the object during the reconstruction process, which can lead to a reconstruction of an image having an improved image quality.

    摘要翻译： 本发明涉及用于生成对象的图像的图像生成装置（1）。 重建单元（10）基于提供的测量投影值来重建图像，使得由成本函数定义的成本被降低，其中成本函数取决于计算出的投影值之间的差异，所述计算出的投影值已经通过模拟通过图像的前向投影 以及所提供的测量投影值，并且其中成本函数对相应差异的依赖程度取决于各自的差异。 这可以考虑在重建过程期间通过运动和/或通过对象的不完全照明来测量投影值的扰动程度，这可以导致具有改善的图像质量的图像的重构。

    DEVICE AND METHOD FOR ITERATIVE RECONSTRUCTION OF IMAGES RECORDED BY AT LEAST TWO IMAGING METHODS
    59.
    发明公开
    DEVICE AND METHOD FOR ITERATIVE RECONSTRUCTION OF IMAGES RECORDED BY AT LEAST TWO IMAGING METHODS 有权
    装置和方法从至少两个成像过程图像迭代重建。

    公开(公告)号：EP3028259A1

    公开(公告)日：2016-06-08

    申请号：EP15750277.4

    申请日：2015-07-29

    申请人： Koninklijke Philips N.V.

    发明人： KOEHLER, Thomas ,  BERGNER, Frank ,  PROKSA, Roland

    IPC分类号： G06T11/00

    CPC分类号： G06T11/006 ,  G06T2211/408 ,  G06T2211/424

    摘要： The present invention relates to a device (100) for iterative reconstruction of images recorded by at least two imaging methods, the device comprising: an extraction module (10), which is configured to extract a first set of patches from a first image recorded by a first imaging method and to extract a second set of patches from a second image recorded by a second imaging method; a generation module (20), which is configured to generate a set of reference patches based on a merging of a first limited number of atoms for the first set of patches andof a second limited number of atoms for the second set of patches; and a regularization module (30), which is configured to perform a regularization of the first image or the second image by means of the generated set of reference patches.