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1.发明授权X-ray imaging method involving a series of images from different perspectives 失效X射线成像方法涉及不同视角的一系列图像
公开(公告)号：US5978439A
公开(公告)日：1999-11-02
申请号：US19501
申请日：1998-02-05
CPC分类号： A61B6/481 , A61B6/504 , G01N23/046 , G06T11/003 , G01N2223/419 , H04N5/32 , Y10S378/901
摘要： The invention relates to a method which enables distributed or dilute structures, for example a vascular system filled with a contrast medium, to be reproduced in a synthetic projection image which reproduces the parts of the vascular system which are situated in a selectable sub-volume more clearly than the X-ray images, formed from different perspectives, wherefrom the projection image is derived. The voxel image values associated with the voxels of the sub-volume are first determined and from these voxel image values there is calculated a synthetic projection image in which the selected sub-volume is reproduced.
摘要翻译： 本发明涉及一种使分散或稀释结构（例如填充有造影剂的血管系统）能够在合成投影图像中再现的方法，该合成投影图像再现位于可选子体积中的血管系统的部分 比从不同角度形成的X射线图像明确，从而导出投影图像。 首先确定与子体积的体素相关联的体素图像值，并且从这些体素图像值计算出其中再现所选择的子体积的合成投影图像。
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公开(公告)号：US5852646A
公开(公告)日：1998-12-22
申请号：US852301
申请日：1997-05-07
CPC分类号： G06T11/008 , A61B2090/367 , A61B2090/376 , A61B34/20 , Y10S378/901
摘要： An X-ray imaging method, and device for carrying out the method, utilizes a first imaging device to form and digitally store a series of two-dimensional X-ray images in which an object to be examined is projected onto an X-ray image pick-up device from different perspectives, and a second imaging device to form a three-dimensional image of the same object. Quasi three-dimensional reproduction of anatomic structures is achieved by extracting a relevant structure of the object to be examined from the three-dimensional image, calculating synthetic, two-dimensional projection images of the extracted structure, the structure being projected with the same geometrical parameters as used for the relevant structure during the formation of the individual X-ray images, forming superposition images by superposing the synthetic projection images and the X-ray images formed under the same geometrical conditions, and displaying the series of superposition images.
摘要翻译： 一种X射线成像方法和用于执行该方法的装置，利用第一成像装置来形成和数字地存储一系列二维X射线图像，其中被检查对象投影到X射线图像上 拾取装置，以及形成相同物体的三维图像的第二成像装置。 通过从三维图像提取待检查对象的相关结构，计算提取结构的合成二维投影图像，以相同几何参数投影的结构，实现解剖结构的准三维再现 用于形成各个X射线图像期间的相关结构，通过叠加合成投影图像和在相同几何条件下形成的X射线图像形成叠加图像，并显示一系列叠加图像。
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3.发明授权Method for separating moving structures from a fixed background in a sequence of X-ray projection images and equipment for implementing this method 失效用于将X射线投影图像和设备的移动结构与固定背景分离的方法，用于实现该方法
公开(公告)号：US4720843A
公开(公告)日：1988-01-19
申请号：US853279
申请日：1986-04-17
CPC分类号： G06T5/50
摘要： The invention relates to an X-ray subtraction method, and equipment for implementing this method, in which a moving structure is subtracted from the fixed background. The picture values corresponding to the minimum absorption are used as the mask image for each picture element from the projection images.
摘要翻译： 本发明涉及一种X射线减法方法及其实现方法的装置，其中从固定背景中减去移动结构。 对应于最小吸收的图像值被用作来自投影图像的每个图像元素的掩模图像。
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4.发明授权Method for distortion correction of X-ray images, and device for carrying out the method 失效X射线图像的畸变校正方法以及执行该方法的装置
公开(公告)号：US5671297A
公开(公告)日：1997-09-23
申请号：US612006
申请日：1996-03-04
CPC分类号： H04N19/54 , G06T3/00 , G06T3/0093
摘要： A distorted input image, produced by an X-ray exposure and composed of pixels defined by their position and their respective input image value, is transformed into a substantially distortion-free output image composed of pixels defined by their position and their output image value. Improvement is achieved in that the transformation utilizes a determination of the position of the corner points of the pixels of the output image (or the input image) as well as the surface area of a polygon defined by the corner points in the input image (output image).
摘要翻译： 通过X射线曝光产生的由其位置及其相应输入图像值定义的像素组成的失真输入图像被变换为由它们的位置及其输出图像值定义的像素构成的基本上无失真的输出图像。 改进是通过转换利用输出图像（或输入图像）的像素的角点的位置以及由输入图像中的角点（输出）定义的多边形的表面积的确定 图片）。
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5.发明授权Method of generating an X-ray layer image of an examination zone, and device for performing the method 失效产生检查区域的X射线层图像的方法，以及用于执行该方法的装置
公开(公告)号：US4853947A
公开(公告)日：1989-08-01
申请号：US099569
申请日：1987-09-22
摘要： The invention relates to a method of generating a layer image from a plurality of single images, the image processing errors which locally occur in the single images being substantially eliminated in the layer image. To this end, the image values for the individual layer image points are formed by that image value of the image points geometrically situated with the layer image point which corresponds to the next to the lowest absorption value.
摘要翻译： 本发明涉及从多个单个图像生成层图像的方法，在图像中基本上消除了单个图像中本地发生的图像处理错误。 为此，各层图像点的图像值由与几乎位于与最低吸收值相邻的层图像点几何位置的图像点的图像值形成。
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6.发明授权X-ray diagnostic apparatus comprising means for the enlarged visual display of a selectable detail of the overall image 失效X射线诊断设备，包括可视化显示整个图像的可选择细节的手段
公开(公告)号：US5117446A
公开(公告)日：1992-05-26
申请号：US656895
申请日：1991-02-15
摘要： An X-ray diagnostic apparatus, comprises an X-ray source (1), an imaging surface (6) on which the intensity distribution of the X-rays to be applied to a test object (4) is imaged, an optical imaging device for imaging an overall image (10) of the imaging surface (6) onto the entrance surface of a first image sensor (11), a device (12) for the visual display of the overall image (10), and an imaging enlargement device for the enlarged visual display of a selectable detail of the overall image. Strongly enlarged and still high-resolution detail images are generated in that the selectable detail (20) of the overall image is directed onto a second image sensor 16) which discriminates a substantially higher number of pixels relative to the unit of surface area of the overall image.
摘要翻译： 一种X射线诊断装置，包括X射线源（1），成像表面（6），将要施加到被检体（4）的X射线的强度分布成像在其上;光学成像装置 用于将成像表面（6）的整个图像（10）成像到第一图像传感器（11）的入射表面上，用于整个图像（10）的视觉显示的装置（12）和成像放大装置 用于放大的视觉显示整个图像的可选择的细节。 产生了强大的和仍然高分辨率的细节图像，因为整个图像的可选择细节（20）被引导到第二图像传感器16），该第二图像传感器识别相对于整体的表面积的单位的基本上更高数量的像素 图片。
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7.发明授权Circuit arrangement for geometric image transformation including a memory storing an assignment between addresses in input and output images 失效用于几何图像变换的电路布置，包括存储输入和输出图像中的地址之间的分配的存储器
公开(公告)号：US5319749A
公开(公告)日：1994-06-07
申请号：US899814
申请日：1992-06-16
CPC分类号： G06T5/006 , H04N3/2335
摘要： A memory arrangement for fast geometric transformation of an image is formed by a first memory for storing image values generated by an image-generating system, a second memory for storing image values corresponding to an image resulting from geometric transformation of image values from the first memory, and a third memory with the same number of memory addresses as the second memory and in which an assignment between the addresses of the first and second memories is stored.
摘要翻译： 用于图像的快速几何变换的存储装置由用于存储由图像生成系统生成的图像值的第一存储器形成，第二存储器，用于存储与来自第一存储器的图像值的几何变换产生的图像相对应的图像值 以及具有与第二存储器相同数量的存储器地址的第三存储器，并且其中存储第一和第二存储器的地址之间的分配。
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公开(公告)号：US5022066A
公开(公告)日：1991-06-04
申请号：US798507
申请日：1985-11-15
CPC分类号： G06T11/006 , G06T2211/424 , Y10S378/901
摘要： The invention relates to a method of forming images of layers of an object, and a device for performing this method. The layer images are formed from single-shadow images produced from different radiation source positions. The image values of the single-shadow images are first stored in a first as well as in a second memory. From the values of given image points in the second memory, a layer image value is calculated. The layer image value is added to the corresponding image points in a third memory. From the differences between these standardized sums in the third memory and the original image values in the first memory, there are formed correction values for correcting the image values in the second memory. Improved layer images are thus obtained.
摘要翻译： 本发明涉及一种形成物体的层的图像的方法以及用于执行该方法的装置。 层图像由从不同辐射源位置产生的单阴影图像形成。 单阴影图像的图像值首先存储在第一和第二存储器中。 根据第二存储器中的给定图像点的值，计算层图像值。 层图像值被添加到第三存储器中的相应图像点。 根据第三存储器中的这些标准化和与第一存储器中的原始图像值之间的差异，形成用于校正第二存储器中的图像值的校正值。 因此获得改进的层图像。
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公开(公告)号：US4888794A
公开(公告)日：1989-12-19
申请号：US173684
申请日：1988-03-24
CPC分类号： G06T11/006
摘要： The invention relates to a method which enables spatial display in cases where X-ray images are formed from different perspectives which are situated far apart. To this end, from the single images a synthetic image of the examination zone is calculated for at least one position which neighbors one of the radiation source positions, which synthetic image is used for imaging the examination zone.
摘要翻译： 本发明涉及一种能够在远离分开的不同视角形成X射线图像的情况下进行空间显示的方法。 为此，从单个图像中，对于邻近一个辐射源位置的至少一个位置计算检查区域的合成图像，该合成图像用于对检查区域进行成像。
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