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    X-ray diagnostic apparatus, image processing apparatus, and program
    61.
    发明公开
    X-ray diagnostic apparatus, image processing apparatus, and program 有权
    诊断Röntgengerät，Bildverarbeitungsgerätund Programm

    公开(公告)号：EP1820450A1

    公开(公告)日：2007-08-22

    申请号：EP07003439.2

    申请日：2007-02-19

    申请人： Nakaura, Takeshi ,  Toshiba Medical Systems Corporation

    发明人： Nakamura, Takeshi ,  Ohishi, Satoru

    IPC分类号： A61B6/00

    CPC分类号： A61B6/504 ,  A61B5/7289 ,  A61B6/5264 ,  A61B6/541 ,  A61B8/00 ,  A61B8/5276 ,  G06T5/50 ,  G06T7/0016 ,  G06T7/20 ,  G06T2207/10116 ,  G06T2207/20224 ,  G06T2207/30101 ,  H04N5/3205

    摘要： An X-ray diagnostic apparatus includes an image generating unit (2) which generates a plurality of X-ray images by repeatedly radiographing a subject before and after injection of a contrast medium, a region detecting unit (20) which detects a non-contrast region from a plurality of mask images before injection of the contrast medium and a plurality of contrast images after injection of the contrast medium, which constitute the plurality of X-ray images, a mask selecting unit (19) which separately selects one mask image with respect to each of the contrast images on the basis of a correlation between the contrast image and the mask image upon localization to the non-contrast region, and a subtraction processing unit (21) which generates a subtraction image by performing subtraction between the contrast image and the selected mask image.

    摘要翻译： X射线诊断装置包括：图像生成单元，其通过在注射造影剂之前和之后反复放射对象来生成多个X射线图像;区域检测单元（20），其检测非对比度 区域，以及在注入构成多个X射线图像的造影剂之后的多个对比度图像;掩模选择单元（19），其分别选择一个掩模图像与 基于对比度图像和对比度区域之间的掩模图像之间的相关性，对每个对比度图像的相关性;以及减法处理单元，其通过在对比度图像之间进行减法来生成减法图像 和所选的掩模图像。

    X-ray diagnosis apparatus
    62.
    发明公开
    X-ray diagnosis apparatus 有权
    Röntgendiagnostikgerät

    公开(公告)号：EP1378200A1

    公开(公告)日：2004-01-07

    申请号：EP03254056.9

    申请日：2003-06-26

    申请人： Kabushiki Kaisha Toshiba

    发明人： Nagai, Seiichiro, Toshiba Corporation

    IPC分类号： A61B6/00

    CPC分类号： H04N5/3658 ,  A61B6/032 ,  A61B6/4233 ,  H04N5/32 ,  H04N5/3205 ,  H04N5/365 ,  H04N5/3653 ,  H04N5/3742

    摘要： An X-ray diagnosis apparatus including an X-ray detector (25) which has a plurality of detection elements. On the X-ray detector (25), there is a first area (42) and a second area (40). A readout unit reads out an electric charge from a detection element on the first area before reading out the electric charge from a detection element on the second area. A display unit (21) displays an X-ray image data which is created by the electric charge read out from the detection element on the second area (40).

    摘要翻译： 一种X射线诊断装置，包括具有多个检测元件的X射线检测器（25）。 在X射线检测器（25）上，存在第一区域（42）和第二区域（40）。 在从第二区域的检测元件读出电荷之前，读出单元从第一区域上的检测元件读出电荷。 显示单元（21）显示由在第二区域（40）上从检测元件读出的电荷产生的X射线图像数据。

    CORONARY TRACKING DISPLAY
    63.
    发明授权
    CORONARY TRACKING DISPLAY 失效
    VERFAHREN ZURNACHFÜHRUNGDER KORONAR-ANZEIGE

    公开(公告)号：EP0515641B1

    公开(公告)日：2003-02-05

    申请号：EP92901555.0

    申请日：1991-11-12

    申请人： Cedars-Sinai Medical Center

    发明人： WHITING, James S. ,  EIGLER, Neal L.

    IPC分类号： H05G1/64 ,  H04N5/32 ,  H04N5/232 ,  G03B42/02

    CPC分类号： A61B6/481 ,  A61B6/504 ,  G06T7/20 ,  G06T7/246 ,  G06T7/70 ,  G06T2207/30101 ,  H04N5/3205 ,  H04N5/325 ,  H05G1/60

    摘要： A method of displaying details of a coronary artery lesion in a cineangiogram, by adjusting each frame of the cineangiogram so that the lesion is continually displayed at a fixed location on a display. The remaining cardiac anatomy appears to move, in background, past a stationary arterial segment, thus making the displayed arterial segment easier to identify and to examine by medical personnel. Cineangiographic image frames are digitized and processed by a processor (201) and the image frames are digitally shifted to place the arterial segment in substantially the same viewing location in each frame. Sequential image frames may be presented to the viewer as a stereoscopic pair, to produce pseudostereopsis. The arterial segment appears to the viewer in foreground, as if it was floating in front of the remaining cardiac anatomy. Image frames may be further processed to aid examination by medical personnel. The processor may make quantitative measurements of the cineangiogram and may display results of those measurements to aid review of the cineangiogram. Frames may be averaged to reduce quantum noise and to blur any structure noise; frames may be compared with prior cineangiograms to increase clarity or contrast. Coordinate adjustments for a cineangiogram may help guide therapeutic procedures, or may help enhance other imaging procedures such as fluoroscopy.

    摘要翻译： 通过调整电影照像的每一帧以使病变在显示器上的固定位置处不断显示，来显示电影照相中的冠状动脉病变的细节的方法。 剩余的心脏解剖似乎在背景中移动通过静止的动脉段，从而使显示的动脉段更容易识别并由医务人员进行检查。 血管造影图像帧由处理器数字化和处理，并且图像帧被数字移位以将动脉段在每个帧中基本上相同的观察位置。 顺序图像帧可以作为立体对呈现给观看者，以产生伪造图。 动脉段在前景中出现在观察者身上，好像它悬浮在剩下的心脏解剖结构的前面。 可以进一步处理图像帧以帮助医务人员进行检查。 处理器可以进行电影图的定量测量，并且可以显示这些测量的结果以帮助检查电影图。 可以对帧进行平均以减少量子噪声并模糊任何结构噪声; 可以将帧与先前的电影显像进行比较以增加清晰度或对比度。 电影照相机的坐标调整可能有助于指导治疗过程，或有助于增强其他成像过程，如荧光透视。

    Apparatus and method for obtaining two radiographic images of an object from one exposing radiation dose
    66.
    发明公开
    Apparatus and method for obtaining two radiographic images of an object from one exposing radiation dose 失效
    装置和方法，用于通过辐射曝光剂量产生对象的两个X射线图像

    公开(公告)号：EP0743810A1

    公开(公告)日：1996-11-20

    申请号：EP96420146.1

    申请日：1996-04-30

    申请人： EASTMAN KODAK COMPANY

    发明人： Trauernicht, David Paul

    IPC分类号： H05G1/26 ,  H05G1/60 ,  H04N5/32

    CPC分类号： H05G1/60 ,  H04N5/3205 ,  H05G1/26

    摘要： In accordance with the invention, an apparatus for diagnostic radiographic imaging comprises an x-ray source for providing an exposing dose of x-rays and a first radiation receptor for detecting imagewise modulated x-rays are emitted from the x-ray source and from an imaging object interposed between the source and the first receptor; the first receptor thereby provides a first image of the object. A second radiation receptor for detecting imagewise modulated x-rays that are emitted from the first receptor is situated behind the first receptor and comprises x-ray converter means and detector means for detecting a converted x-ray image; the second receptor provides a digital second image of the object. Also in accordance with the invention, a method for forming two diagnostic radiographic images from a dose of x-rays comprises exposing an imaging object interposed between an x-ray source and a first radiation receptor and detecting by the first receptor imagewise modulated x-rays emitted from the x-ray source and the object; a first image of the object is thereby provided. Imagewise modulated x-rays emitted from the first receptor are detected by a second imaging receptor that is situated behind the first receptor and comprises x-ray converter means and detector means for detecting a converted x-ray image; a digital second image of the object is thereby provided.

    摘要翻译： 在雅舞的发明，涉及一种用于X射线源的诊断放射线照相成像包括装置用于在曝光的x射线的剂量和用于检测成像调制的x射线的第一辐射受体从所述x射线源和从到发射提供 介于源和第一接收器之间的成像对象; 第一受体从而提供所述对象的第一图像。 用于检测成像调制X射线的第二辐射受体并发射从第一受体位于第一受体和后面包括x射线转换器的装置，以及检测器，用于检测转换的X射线图像; 第二受体提供了对象的数字第二图像。 因此，在通过本发明，用于从一个剂量的X射线的形成两个诊断的放射线照相图像的方法雅舞蹈包括暴露于X射线源和一个第一辐射受体和由第一受体成像调制的x射线检测之间成像对象 从X射线源和物体发射; 所述对象的第一图像从而提供。 从第一受体发射的成像式调制的x射线通过第二成像受体检测并位于第一受体和后面包括x射线转换器的装置，以及检测器，用于检测转换的X射线图像; 所述对象的数字图像的第二由此提供。

    Image composition method and imaging apparatus for performing said method
    68.
    发明公开
    Image composition method and imaging apparatus for performing said method 失效
    图像合成方法及图像用于执行该方法形成装置。

    公开(公告)号：EP0655861A1

    公开(公告)日：1995-05-31

    申请号：EP94203387.9

    申请日：1994-11-22

    申请人： PHILIPS ELECTRONICS N.V.

    发明人： Lobregt, Steven ,  van Eeuwijk, Alexander Henricus Waltherus

    IPC分类号： H04N5/32

    CPC分类号： A61B6/504 ,  H04N5/3205

    摘要： Sub-images are merged in order to form an assembled image representing an elongate scene. In order to counteract artifacts in the assembled image such as disturbing transitions at the boundaries of adjacent sub-images in the image assembly method in accordance with the invention, pixel-values of overlapping portions of consecutive sub-images are interpolated so as to form pixel-values of the assembled image. The relative shift between consecutive sub-images with respect to the elongate scene is calculated from image information contained in the sub-images themselves. Correlations of pixel-values in overlapping portions of consecutive sub-images are determined as a function of the shift-value of the shift between consecutive sub-images with respect to the elongate scene. The actual shift between consecutive sub-images is found as the shift-value for which the correlation attains its maximum-value.
    The image assembly method in accordance with the invention is particularly suitable for use in peripheral x-ray angiography. Consecutive sub-images are made by x-irradiations of e.g. a patient's leg with an x-ray imaging system comprising an x-ray source, an x-ray detector, in various positions relative to the patient.
    In order to induce a sufficient amount of contrast in the sub-images to enable the determination of the relative shift between consecutive sub-images the invention proposes to image a contrasting object together with the elongate scene itself. Preferably the contrasting object has the form of a ruler with a binary pattern which may be incorporated in the patient table.

    摘要翻译： 子图像合并，以形成在表示伸长场景组装图像。 为了抵消组装图像中的伪影：如在图像组装方法相邻子图像雅舞蹈与本发明的边界干扰转换，重叠连续的子图像的部分的像素值进行内插，以便形成像素 组装图像的 - 值。 连续的子图像之间的相对于所述细长场景相对移动是从包含在所述的子图像本身的图像信息进行计算。 在重叠的连续的子图像的部分的像素值的相关性是确定的开采与相对于所述细长场景连续的子图像之间的移位的移位值的函数。 连续的子图像之间的实际位移被发现作为移位值的量，相关性达到其最大值。 在与本发明雅舞蹈图像的组装方法是特别适合于在周X射线血管造影使用。 连续的子图像通过例如的X-照射制成 患者用的X射线成像系统，包括相对于患者的X射线源，X射线探测器，在各种位置的腿。 为了诱导的在副图像的对比度足够的量，以使连续的子图像之间的相对位移的确定本发明的具有细长场景本身一起提出图像形成对比的对象。 优选地，所述对比对象具有与可以在患者台被结合的二进制图案的标尺的形式。

    Method and apparatus for imaging radiation beams of different wavelengths
    69.
    发明公开
    Method and apparatus for imaging radiation beams of different wavelengths 失效
    过程和用于不同波长的辐射的图像拾取方法。

    公开(公告)号：EP0600673A2

    公开(公告)日：1994-06-08

    申请号：EP93309438.5

    申请日：1993-11-25

    申请人： XEROX CORPORATION

    发明人： Nelson, Steven A. ,  Street, Robert A.

    IPC分类号： H04N3/15 ,  H04N5/32 ,  H04N1/04

    CPC分类号： H04N1/0282 ,  G01T1/2018 ,  G01T1/2928 ,  H04N1/02815 ,  H04N1/0287 ,  H04N1/40 ,  H04N5/3205

    摘要： A radiation imaging method and system for use in various imaging techniques includes a source (12) of spatially-separate radiation beams (13,14) at first and second wavelengths (L1,L2) respectively. The radiation beams pass through an object (18) to be imaged and are detected by a target array of sensors arranged in addressable lines (21). Each beam separately scans across each line of sensors to produce first and second outputs which are combined to produce a combined image signal that has increased contrast from that which would be produced by either the first or the second output alone. Preferably, the array is an amorphous silicon array and mean is provided for synchronously clocking sensor data from the array.

    摘要翻译： 在各种成像技术中使用的辐射成像方法和系统，包括在空间上分开的辐射束（13,14）分别在第一和第二波长（L1，L2）的一个源（12）。 辐射光束穿过到对象（18）要被成像，并通过在可寻址的线（21）设置的传感器的一个目标阵列进行检测。 每个波束跨越传感器以产生被组合以产生组合图像信号的第一和第二输出中的每一行分别扫描并已经从对将被第一或单独第二输出来产生增加的对比度。 优选地，阵列是无定形硅阵列和平均提供了一种用于同步从所述传感器阵列的时钟的数据。