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    METHOD AND APPARATUS FOR ACQUIRING FUSION X-RAY IMAGES
    1.
    发明申请
    METHOD AND APPARATUS FOR ACQUIRING FUSION X-RAY IMAGES 审中-公开
    用于获取融合X射线图像的方法和装置

    公开(公告)号：WO2008120119A1

    公开(公告)日：2008-10-09

    申请号：PCT/IB2008/050953

    申请日：2008-03-14

    Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  BRUIJNS, Antonius, J., C. ,  HERMANS, Ronaldus, P., J. ,  RONGEN, Peter, M., J. ,  BLIJD, Jarl, J., P. ,  STEGEHUIS, Herman ,  BREDNO, Joerg

    Inventor： BRUIJNS, Antonius, J., C. ,  HERMANS, Ronaldus, P., J. ,  RONGEN, Peter, M., J. ,  BLIJD, Jarl, J., P. ,  STEGEHUIS, Herman ,  BREDNO, Joerg

    IPC: A61B6/00

    CPC classification number: A61B6/504 ,  A61B6/481 ,  A61B6/482 ,  A61B6/503 ,  A61B6/5235 ,  A61B6/541

    Abstract: A method for acquiring fusion images of a periodically moving body organ and an apparatus adapted to implement such method is described. In a preferred embodiment of the method, X-rays are irradiated to the body organ and a multiplicity of mask images is acquired by X-ray detection at a high image acquisition rate of at least 60 frames per second. Then, contrast medium is injected into vessels of the body organ and subsequently at least one contrast image of the body organ with the contrast medium included in the vessels is acquired by X-ray detection. A matching image from the multiplicity of mask images is determined which has been acquired at substantially the same stage of the movement of the body organ as the contrast image. By calculating the difference between the matching mask image and the at least one contrast image a subtraction image of the body organ can be obtained and displayed. Using different image acquisition rates during mask image acquisition and contrast image acquisition high quality subtraction images can be achieved while at the same time reducing the overall X-ray exposure dose.

    Abstract translation: 描述了一种用于获取定期移动的身体器官的融合图像的方法和适于实现这种方法的装置。 在该方法的优选实施例中，将X射线照射到身体器官，并且通过以至少60帧/秒的高图像采集率的X射线检测获取多个掩模图像。 然后，将造影剂注射到身体器官的血管中，随后通过X射线检测获得体内器官与包含在血管中的造影剂的至少一个对比图像。 确定来自多个掩模图像的匹配图像，其在与对比图像的身体器官的移动的基本相同的阶段已被获取。 通过计算匹配掩模图像和至少一个对比图像之间的差异，可以获得并显示身体器官的减影图像。 在掩模图像采集和对比度图像采集期间使用不同的图像采集率可以实现高质量的减影图像，同时减少整个X射线曝光剂量。

    VIEWING SYSTEM FOR CONTROL OF PTCA ANGIOGRAMS
    4.
    发明申请
    VIEWING SYSTEM FOR CONTROL OF PTCA ANGIOGRAMS 审中-公开
    用于控制PTCA ANGIOGRAMS的观察系统

    公开(公告)号：WO2005104951A1

    公开(公告)日：2005-11-10

    申请号：PCT/IB2005/051354

    申请日：2005-04-26

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  RONGEN, Peter, M., J. ,  FLORENT, Raoul ,  STEGEHUIS, Herman

    Inventor： RONGEN, Peter, M., J. ,  FLORENT, Raoul ,  STEGEHUIS, Herman

    IPC: A61B6/00

    CPC classification number: A61B6/504 ,  A61B6/12 ,  A61B6/469 ,  A61B90/39 ,  A61B2017/22051 ,  A61F2/82 ,  A61F2/958

    Abstract: A medical viewing system for processing and displaying a sequence of medical angiograms representing a balloon, moving in an artery, this system comprising extracting means for automatically extracting balloon image data in a phase of balloon expansion, and computing means for automatically defining and storing coordinates of a Region of Interest (ROI) based on the expanded balloon image data, located around the expanded balloon; and display means for displaying the images. Contrast agent may be used as agent of balloon expansion. The system may have means to detect and keep track of balloon markers and means to look around those markers for further balloon image data extraction.

    Abstract translation: 一种用于处理和显示代表在动脉中移动的气球的医疗血管造影图的序列的医疗观察系统，该系统包括用于在气囊扩张阶段自动提取气囊图像数据的提取装置，以及用于自动定义和存储坐标的坐标的计算装置 基于扩展的气囊图像数据的位于感兴趣区域（ROI）的位置，位于扩展的气囊周围; 以及用于显示图像的显示装置。 对比剂可用作气囊膨胀剂。 该系统可以具有检测和跟踪气球标记的手段，并且可以查看围绕这些标记的手段以进一步提取气囊图像数据。

    MEDICAL IMAGING DEVICE FOR PROVIDING AN IMAGE REPRESENTATION SUPPORTING IN POSITIONING AN INTERVENTION DEVICE
    5.
    发明申请
    MEDICAL IMAGING DEVICE FOR PROVIDING AN IMAGE REPRESENTATION SUPPORTING IN POSITIONING AN INTERVENTION DEVICE 审中-公开
    医疗成像装置，用于提供支持定位干预装置的图像表示

    公开(公告)号：WO2012123850A1

    公开(公告)日：2012-09-20

    申请号：PCT/IB2012/051021

    申请日：2012-03-05

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  FLORENT, Raoul ,  HOORNAERT, Bart Pierre Antoine Jozef ,  STEGEHUIS, Herman

    Inventor： FLORENT, Raoul ,  HOORNAERT, Bart Pierre Antoine Jozef ,  STEGEHUIS, Herman

    IPC: A61B6/06 ,  A61B6/12

    CPC classification number: A61B5/0037 ,  A61B6/06 ,  A61B6/12 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/487 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5229 ,  A61B6/542 ,  A61B90/37

    Abstract: A medical imaging device and a method for providing an image representation supporting positioning of an intervention device such as a wire tip (4) in a region of interest during an intervention is proposed. Therein, the following process steps are to be performed: (S1) acquiring a pre-live anatomy image (1) including a region of interest; (S2) acquiring a live anatomy image using a live image acquisition device comprising an adjustable collimator device; (S3) identifying a location (5) of the intervention device (4) within the live anatomy image; (S4) adjusting settings of the collimator device based on the identified location of the intervention device for subsequently acquiring a further live anatomy image representing the region of interest using the live image acquisition device with the collimator device being in the adjusted settings; and providing (S5) the image representation by merging information from the live anatomy image into the pre-live anatomy image.. Thereby, the intervention device may be continuously tracked and the collimator device may restrict a field of view to a location of the intervention device thereby significantly reducing an applied X-ray dose. Background anatomical information may be introduced into the final image representation using the pre-live anatomy image possibly having a higher image contrast than the live anatomy images.

    Abstract translation: 提出了一种医疗成像装置和用于在干预期间提供支持在感兴趣区域中的诸如线尖（4）的介入装置的定位的图像表示的方法。 其中，执行以下处理步骤：（S1）获取包括感兴趣区域的活体前解剖图像（1）; （S2）使用包括可调准直器装置的实况图像获取装置获取实况解剖图像; （S3）识别所述实况解剖图像内的介入装置（4）的位置（5）; （S4）基于识别的干预装置的位置来调整准直仪装置的设置，用于随后使用准直仪装置处于调整的设置中的实时图像采集装置获取表示感兴趣区域的另外的活体解剖图像; 以及通过将来自实况解剖图像的信息合并到活体前解剖图像中来提供（S5）图像表示。由此，干预装置可以被连续跟踪，并且准直仪装置可以将视野限制到干预的位置 从而显着降低施用的X射线剂量。 背景解剖信息可以使用可能具有比活体解剖图像更高的图像对比度的活体前解剖图像被引入最终图像表示。

    SCATTER COMPENSATION IN AN X-RAY SYSTEM
    6.
    发明申请
    SCATTER COMPENSATION IN AN X-RAY SYSTEM 审中-公开
    X射线系统中的散射体补偿

    公开(公告)号：WO2006056915A1

    公开(公告)日：2006-06-01

    申请号：PCT/IB2005/053802

    申请日：2005-11-17

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  JOOSTEN, Johannes, H., M. ,  NOORDHOEK, Niels ,  STEGEHUIS, Herman

    Inventor： JOOSTEN, Johannes, H., M. ,  NOORDHOEK, Niels ,  STEGEHUIS, Herman

    IPC: G01T1/164

    CPC classification number: G01T1/1644 ,  A61B6/06 ,  A61B6/5282 ,  A61B6/542 ,  A61B6/544 ,  Y10S378/901

    Abstract: Scatter compensation is achieved in an X-ray imaging system by providing collimation means in the form of shutters (12) to collimate the primary X-ray beam (1) such that the radiation (8) transmitted through a subject (4) to be imaged is incident substantially centrally on the active part (14) of an image detector (3), so as to define an active border (14b), in respect of which scatter levels can be measured. An electrical signal (104) representative of the scatter level is subtracted from the electrical signal (7) representative of the radiation (8) transmitted through the subject, to obtain a scatter-compensated image signal (106).

    Abstract translation: 通过提供以快门（12）的形式的准直装置来准直主X射线束（1），使得通过被摄体（4）传播的辐射（8）成为X射线成像系统，实现散射补偿 成像的图像基本上集中在图像检测器（3）的有源部分（14）上，以便限定可以测量散射水平的活动边界（14b）。 从代表通过被摄体发射的辐射（8）的电信号（7）中减去代表散射电平的电信号（104），以获得散射补偿图像信号（106）。

    COMBINATION OF X-RAY IMAGE ACQUISITIONS WITH VARIOUS FOCAL SPOT SIZES TO IMPROVE IMAGE QUALITY
    7.
    发明申请
    COMBINATION OF X-RAY IMAGE ACQUISITIONS WITH VARIOUS FOCAL SPOT SIZES TO IMPROVE IMAGE QUALITY 审中-公开
    组合X射线图像采集与各种焦点尺寸以提高图像质量

    公开(公告)号：WO2010018480A1

    公开(公告)日：2010-02-18

    申请号：PCT/IB2009/053215

    申请日：2009-07-24

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V. ,  LEVRIER, Claire ,  PICARD, Mathieu ,  STEGEHUIS, Herman ,  FLORENT, Raoul

    Inventor： LEVRIER, Claire ,  PICARD, Mathieu ,  STEGEHUIS, Herman ,  FLORENT, Raoul

    IPC: A61B6/00 ,  G06T5/00 ,  G06T5/50 ,  H05G1/52 ,  H05G1/60 ,  H04N5/32

    CPC classification number: H04N5/32 ,  A61B6/4021 ,  A61B6/4441 ,  A61B6/5229 ,  A61B6/5235 ,  A61B6/5241 ,  G06T5/50 ,  G06T2207/10148

    Abstract: The present invention relates to a method and a device for providing images with an X-ray imaging system comprising an X-ray tube. In order to provide improved image quality, in particular for noise reduction in X-ray images, the method comprises the steps of acquiring (112) at least a first (118) and a second image (120) of the same region with different focal spot sizes of the X-ray tube, wherein one of the first and the second images is acquired with a small focal spot and the other image is acquired with a large focal spot. Then the two images are combined (114), wherein the combination step includes decomposing (122) the image data of the first image and the second image, determining the noise content in the decomposed data, determining (130) at least one weighting factor (132), depending on the signal content and noise content of the decomposed data of at least one of the two images, modulating (136) the decomposed image data of at least one of the two images using the weighting factor and recomposing (142) the decomposed image data of the at least two images to form a single new image (116).

    Abstract translation: 本发明涉及一种用于向包括X射线管的X射线成像系统提供图像的方法和装置。 为了提供改进的图像质量，特别是用于X射线图像中的降噪，该方法包括以下步骤：获取（112）具有不同焦点的相同区域的至少第一（118）和第二图像（120） X射线管的斑点尺寸，其中第一和第二图像中的一个以小的焦点获取，并且另一个图像被获取具有大的​​焦斑。 然后组合两个图像（114），其中组合步骤包括分解（122）第一图像和第二图像的图像数据，确定分解数据中的噪声内容，确定（130）至少一个加权因子 132），取决于两个图像中的至少一个的分解数据的信号内容和噪声含量，使用加权因子调制（136）分解的两个图像中的一个图像数据，并重新构成（142） 分解所述至少两个图像的图像数据以形成单个新图像（116）。

    OBJECT LOCALIZATION IN X-RAY IMAGES
    8.
    发明申请
    OBJECT LOCALIZATION IN X-RAY IMAGES 审中-公开
    X射线图像中的对象本地化

    公开(公告)号：WO2009118671A1

    公开(公告)日：2009-10-01

    申请号：PCT/IB2009/051175

    申请日：2009-03-20

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  NIJHOF, Niels ,  STEGEHUIS, Herman

    Inventor： NIJHOF, Niels ,  STEGEHUIS, Herman

    IPC: A61B6/12 ,  G06T11/00 ,  A61B6/03 ,  A61B19/00

    CPC classification number: A61B6/588 ,  A61B6/027 ,  A61B6/12 ,  A61B6/4447 ,  A61B34/20 ,  G06T7/55 ,  G06T7/75 ,  G06T2207/10081 ,  G06T2207/10116 ,  G06T2207/30021 ,  G06T2207/30048

    Abstract: An x-ray system (100) comprises a gantry (102) on which an x-ray source (104) and an x-ray detector (106) are mounted. A control unit (110) comprises means (114) for effectuating a wiggling motion of the gantry, wherein an axis (116) connecting the x-ray source and the x-ray detector traces a surface (128) of a cone (118). The x-ray source and the x-ray detector have a fixed position with respect to the axis. The control unit comprises means (120) for acquiring a series of x-ray images during the wiggling motion of the gantry. An object recognition unit (122) detects an object (124) appearing in the series of x-ray images to obtain a tracked path. A depth estimation unit (126) uses the tracked path for estimating a depth parameter indicative of a position of the object in a direction substantially parallel to the axis (116).

    Abstract translation: X射线系统（100）包括其上安装有X射线源（104）和x射线检测器（106）的台架（102）。 控制单元（110）包括用于实现台架的摆动运动的装置（114），其中连接x射线源和x射线检测器的轴线（116）跟踪锥体（118）的表面（128） 。 X射线源和X射线检测器相对于轴具有固定位置。 控制单元包括用于在台架的摆动运动期间获取一系列X射线图像的装置（120）。 物体识别单元（122）检测出现在一系列X射线图像中的物体（124）以获得跟踪路径。 深度估计单元（126）使用跟踪路径来估计指示物体在基本上平行于轴线（116）的方向上的位置的深度参数。

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