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    ACQUISITION PROTOCOL ASSESSMENT APPARATUS
    1.
    发明申请
    ACQUISITION PROTOCOL ASSESSMENT APPARATUS 审中-公开
    采集协议评估设备

    公开(公告)号：WO2011048515A2

    公开(公告)日：2011-04-28

    申请号：PCT/IB2010/054194

    申请日：2010-09-16

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  BERTRAM, Matthias ,  WIEGERT, Jens ,  BROWN, Kevin, M.

    Inventor： BERTRAM, Matthias ,  WIEGERT, Jens ,  BROWN, Kevin, M.

    IPC: G01T1/02

    CPC classification number: G01T1/02 ,  A61B6/032 ,  A61B6/544 ,  G06F19/00

    Abstract: A method includes generating, via a dose estimator (208), a dose map indicative of an estimated dose deposited for a subject based on acquisition protocol parameter values of an acquisition protocol of an imaging system (100), and generating, via a noise estimator (210), at least one of a noise map indicative of an estimated image noise based on the acquisition protocol parameter values or a contrast-to-noise map based on the noise map and an attenuation map. The method further includes displaying, via a display (216), the dose and noise maps in a human readable format.

    Abstract translation: 一种方法包括：基于成像系统（100）的采集协议的采集协议参数值，经由剂量估计器（208）产生指示为对象存储的估计剂量的剂量图; ，并且经由噪声估计器（210）基于所述噪声图和衰减图来基于所述采集协议参数值或对比噪声图生成指示估计图像噪声的噪声图中的至少一个。 该方法还包括通过显示器（216）以人可读格式显示剂量和噪声图。

    IMAGE GENERATION DEVICE WITH OPTIMIZED DOSE CONTROL
    2.
    发明申请
    IMAGE GENERATION DEVICE WITH OPTIMIZED DOSE CONTROL 审中-公开
    具有优化剂量控制的图像生成装置

    公开(公告)号：WO2009156943A1

    公开(公告)日：2009-12-30

    申请号：PCT/IB2009/052686

    申请日：2009-06-23

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  WIEGERT, Jens ,  BERTRAM, Matthias

    Inventor： WIEGERT, Jens ,  BERTRAM, Matthias

    IPC: G06T11/00 ,  A61B6/03

    CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/542

    Abstract: The present invention relates to an image generation device for generating an image from measured data, wherein image quality is optimized for a region of interest and to an imaging system comprising this image generation device. The image generation device comprises a noise determination unit for determining a distribution of noise in a projection domain of the region of interest, and a dose control unit (32) for determining a dose profile for a radiation source (2) of said image generation device based on said determined distribution of noise by using a noise propagation algorithm. Thereby, signal-to-noise ratio of a reconstructed volume can be improved and is not sensitively dependent on a selected region of interest.

    Abstract translation: 本发明涉及一种用于根据测量数据产生图像的图像产生装置，其中对于感兴趣的区域和包括该图像生成装置的成像系统优化图像质量。 该图像生成装置包括用于确定感兴趣区域的投影域中的噪声分布的噪声确定单元，以及用于确定所述图像生成装置的辐射源（2）的剂量分布的剂量控制单元（32） 基于所述确定的噪声分布，使用噪声传播算法。 因此，可以改善重建体积的信噪比并且不敏感地依赖于所选择的感兴趣区域。

    METHODS FOR IMAGING THE BLOOD PERFUSION
    3.
    发明申请
    METHODS FOR IMAGING THE BLOOD PERFUSION 审中-公开
    用于成像血液灌注的方法

    公开(公告)号：WO2009040742A2

    公开(公告)日：2009-04-02

    申请号：PCT/IB2008/053877

    申请日：2008-09-24

    Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  NEUKIRCHEN, Christoph ,  BERTRAM, Matthias

    Inventor： NEUKIRCHEN, Christoph ,  BERTRAM, Matthias

    IPC: A61B5/026 ,  A61B6/00

    CPC classification number: A61B6/504 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/507

    Abstract: It is provided a method for imaging a dynamic process in a part of the body, especially blood perfusion, with an x-ray system as well as corresponding apparatuses and a corresponding computer readable medium. Especially it is described a method for imaging a dynamic process in a part of the body, especially blood perfusion, with an x-ray system, comprising: acquiring rotational projections of the part of the body over an angular range (2), deriving the anatomy of the part of the body subject to the dynamic process using a tomographic reconstruction from the projections (3), determining an optimal position of the x-ray system according to the derived anatomy for acquiring projections of the dynamic process (4), administering contrast agent to the part of the body (5), acquiring projections of the dynamic process from the determined position (6); calculating the dynamic contrast enhancement over time (7); and calculating and displaying perfusion parameters (8).

    Abstract translation: 提供了一种用于利用x射线系统以及对应的装置和相应的计算机可读介质对身体的一部分，特别是血液灌注中的动态过程进行成像的方法。 特别地，描述了一种利用x射线系统对身体的一部分，特别是血液灌注中的动态过程进行成像的方法，包括：在角度范围（2）上获取身体部分的旋转突起，导出 使用来自投影（3）的断层摄影重建的动态过程的身体部分的解剖结构，根据导出的解剖结构确定x射线系统的最佳位置以获取动态过程（4）的投影，管理 造影剂到身体的一部分（5），从确定的位置（6）获取动态过程的投影; 随着时间的推移计算动态对比度增强（7）; 并计算和显示灌注参数（8）。

    IMAGE RECONSTRUCTION DEVICE AND METHOD
    4.
    发明申请
    IMAGE RECONSTRUCTION DEVICE AND METHOD 审中-公开
    图像重建装置及方法

    公开(公告)号：WO2006056942A1

    公开(公告)日：2006-06-01

    申请号：PCT/IB2005/053861

    申请日：2005-11-22

    Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N. V. ,  BERTRAM, Matthias ,  AACH, Til ,  ROSE, Georg ,  SCHAEFER, Dirk

    Inventor： BERTRAM, Matthias ,  AACH, Til ,  ROSE, Georg ,  SCHAEFER, Dirk

    IPC: G06T11/00

    CPC classification number: G06T11/005

    Abstract: The present invention relates to an image reconstruction device and a corresponding method for reconstructing a 3D image of an object (7) from projection data of said object (7). In order to obtain 3D images having sharp high-contrast structures and almost no image blur, and in which streak artifacts (and noise in tissue-like regions) are strongly reduced, an image reconstruction device is proposed comprising: a first reconstruction unit (30) for reconstructing a first 3D image of said object (7) using the original projection data, an interpolation unit (31) for calculating interpolated projection data from said original projection data, - a second reconstruction unit (32) for reconstructing a second 3D image of said object (7) using at least the interpolated projection data, a segmentation unit (33) for segmentation of the first or second 3D image into high-contrast and low-contrast areas, a third reconstruction unit (34) for reconstructing a third 3D image from selected areas of said first and said second 3D image, wherein said segmented 3D image is used to select image values from said first 3D image for high-contrast areas and image values from said second 3D image for low-contrast areas.

    Abstract translation: 本发明涉及一种从所述物体（7）的投影数据重建物体（7）的3D图像的图像重建装置和相应的方法。 为了获得具有锐利的高对比度结构并且几乎没有图像模糊的3D图像，并且其中强烈减少了条纹伪影（和组织样区域中的噪声），提出了一种图像重建装置，包括：第一重建单元 ），用于使用原始投影数据重建所述对象（7）的第一3D图像;内插单元（31），用于从所述原始投影数据计算内插投影数据;第二重建单元（32），用于重建第二3D图像 所述物体（7）至少使用所述内插投影数据;分割单元（33），用于将所述第一或第二3D图像分割为高对比度和低对比度区域;第三重建单元（34），用于重建第三 所述第一和第二3D图像的所选区域的3D图像，其中所述分割3D图像用于从所述第一3D图像中选择用于高对比度区域的图像值，并且来自所述第二3D图像的图像值 低对比度区域的3D图像。

    AUTOMATED QUANTIFICATION OF INTRAVASCULAR EMBOLIZATION SUCCESS
    5.
    发明申请
    AUTOMATED QUANTIFICATION OF INTRAVASCULAR EMBOLIZATION SUCCESS 审中-公开
    自动化量化血管内灌注成功

    公开(公告)号：WO2011151752A1

    公开(公告)日：2011-12-08

    申请号：PCT/IB2011/052194

    申请日：2011-05-19

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  WIESNER, Steffen Gunther ,  BERTRAM, Matthias ,  LIN, Ming De

    Inventor： WIESNER, Steffen Gunther ,  BERTRAM, Matthias ,  LIN, Ming De

    IPC: G06T7/00

    CPC classification number: A61B5/0033 ,  A61B6/507 ,  G06T7/0014 ,  G06T2207/10081 ,  G06T2207/10096 ,  G06T2207/30056 ,  G06T2207/30096

    Abstract: The present invention relates to a device (2) for automatically quantifying intravascular embolization success, comprising a registration unit (4) adapted for registering a first image and a second image, a segmentation unit (6) adapted for segmenting a tissue of interest in the first image and in the second image and an evaluation unit (8) for evaluating a deviation of perfusion of the tissue of interest by comparing the first image and the second image. The first image is obtained before an interventional treatment, whereas the second image is obtained after such a treatment. Evaluating may comprise comparing the segments of the first and the second images and thus providing a quantitative measure for a perfusion deviation of the tissue, e.g. the perfusion deviation of a tumorous tissue before and after an embolization treatment.

    Abstract translation: 本发明涉及一种用于自动量化血管内栓塞成功的装置（2），包括适用于登记第一图像和第二图像的注册单元（4），适于在所述第一图像和第二图像中分割感兴趣组织的分割单元（6） 第一图像和第二图像以及评估单元（8），用于通过比较第一图像和第二图像来评估感兴趣组织的灌注偏差。 在介入治疗之前获得第一图像，而在这种治疗后获得第二图像。 评价可以包括比较第一图像和第二图像的片段，并且因此提供组织灌注偏差的定量测量，例如。 栓塞治疗前后肿瘤组织灌注偏差。

    IMAGING APPARATUS INCLUDING CORRECTION UNIT FOR SCATTERED RADIATION
    7.
    发明申请
    IMAGING APPARATUS INCLUDING CORRECTION UNIT FOR SCATTERED RADIATION 审中-公开
    成像装置包括用于散射辐射的校正单元

    公开(公告)号：WO2010032163A1

    公开(公告)日：2010-03-25

    申请号：PCT/IB2009/053936

    申请日：2009-09-09

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  WIEGERT, Jens ,  BERTRAM, Matthias

    Inventor： WIEGERT, Jens ,  BERTRAM, Matthias

    IPC: G06T11/00

    CPC classification number: G06T11/005 ,  A61B6/027 ,  A61B6/4291

    Abstract: The present invention relates to an imaging apparatus for generating an image of a region of interest of an object. The imaging apparatus comprises a radiation source (2) for emitting radiation (4) and a detector (6) for measuring the radiation (4) after having traversed the region of interest and for generating measured detection values depending on the measured radiation (4). The imaging apparatus further comprises an attenuation element for attenuating the radiation (4) before traversing the region of interest and an attenuation element scatter values providing unit (12) for providing attenuation element scatter values, which depend on scattering of the radiation (4) caused by the attenuation element. A detection values correction unit (17) corrects the measured detection values based on the provided attenuation element scatter values, and a reconstruction unit (18) reconstructs an image of the region of interest from the corrected detection values.

    Abstract translation: 本发明涉及一种用于生成对象的感兴趣区域的图像的成像装置。 成像设备包括用于发射辐射的辐射源（2）和用于在穿过感兴趣区域之后测量辐射（4）的检测器（6），并且用于根据所测量的辐射（4）产生测量的检测值， 。 成像装置还包括用于在穿过感兴趣区域之前衰减辐射（4）的衰减元件和用于提供依赖于辐射（4）的散射的衰减元件散射值的衰减元件散射值提供单元（12） 通过衰减元件。 检测值校正单元（17）基于所提供的衰减元件散射值来校正测量的检测值，并且重建单元（18）从校正的检测值重建感兴趣区域的图像。

    METHOD FOR ELIMINATING SCATTER ARTEFACTS
    10.
    发明申请
    METHOD FOR ELIMINATING SCATTER ARTEFACTS 审中-公开
    消除散射器ARTEFACTS的方法

    公开(公告)号：WO2009004523A2

    公开(公告)日：2009-01-08

    申请号：PCT/IB2008052482

    申请日：2008-06-23

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  WIEGERT JENS ,  BERTRAM MATTHIAS

    Inventor： WIEGERT JENS ,  BERTRAM MATTHIAS

    CPC classification number: G01T1/1648 ,  G06T11/005

    Abstract: A method, a computer program as well as a corresponding apparatus for eliminating scatter artefacts that corrupt an image of an object using computed tomography, wherein X-ray projections of the object are at least partially truncated, whereas the method comprises the steps of: reconstructing a truncated image of the object with a limited field of view from the projections; constructing a model of the object in an extended field of view using the truncated image of the object; deriving a scatter estimate by means of Monte-Carlo simulation using the model of object; correcting a projection of the object for X-ray scatter based on the scatter estimate; reconstructing a scatter-corrected image using the corrected projections.

    Abstract translation: 一种方法，计算机程序以及用于消除使用计算机断层摄影破坏对象的图像的散射伪影的相应装置，其中对象的X射线投影至少部分被截断，而该方法包括以下步骤：重建 具有来自投影的有限视野的物体的截断图像; 使用对象的截断图像在扩展视场中构建对象的模型; 通过使用对象模型的蒙特卡罗模拟得出散度估计; 基于散射估计来校正物体对于X射线散射的投影; 使用校正的投影重建散射校正图像。

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