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1.发明授权Method of imaging the blood flow as a function of time in an object to be examined 失效在待检查对象中根据时间的函数对血流进行成像的方法公开(公告)号：US06442235B2
公开(公告)日：2002-08-27
申请号：US09749147
申请日：2000-12-27
IPC分类号： G01N2324
CPC分类号： A61B6/481 , A61B6/4014 , A61B6/504
摘要： The invention relates to a method of imaging the blood flow as a function of time in an object (3) to be examined, which method includes the following steps: a) acquisition of a series of X-ray projection images (Di; Ej) during administration of a contrast medium to the blood vessels in the object (3) to be examined, b) acquisition of an image data set (H; K) containing the course of the blood vessels in the object (3) to be examined, c) segmentation of the regions of the blood vessels in the individual X-ray projection images (Di; Ej) that are filled with contrast medium, d) encoding the image data set (H; K) in time by comparing the image data set (H; K) with the segmented X-ray projection images (Dj′; Fj), and e) displaying one or more images (B) formed from the time-encoded image data set (H′; R′) and representing the blood flow as a function of time. The invention also relates to a correspondingly constructed X-ray device.
摘要翻译： 本发明涉及一种在被检查对象（3）中作为时间的函数对血流成像的方法，该方法包括以下步骤：a）获取一系列X射线投影图像（Di; Ej） 在对被检查体（3）中的血管施用造影剂的情况下，b）获取包含被检查物体（3）内的血管进程的图像数据组（H; K） c）在填充有造影剂的各个X射线投影图像（Di; Ej）中对血管的区域进行分割，d）通过比较图像数据集合来对图像数据集（H; K）进行时间编码 （H; K）与分割的X射线投影图像（Dj'; Fj）和ande），显示由时间编码图像数据组（H'; R'）形成并表示血液的一个或多个图像（B） 作为时间的函数的流动。本发明还涉及相应构造的X射线装置。
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2.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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