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公开(公告)号：US09095278B2
公开(公告)日：2015-08-04
申请号：US13991112
申请日：2011-10-25
申请人： Lionel Desponds , Pál Tegzes , Székely György , Régis Vaillant , Tamás Ujvári , Zsolt Szabó , Vincent Bismuth
发明人： Lionel Desponds , Pál Tegzes , Székely György , Régis Vaillant , Tamás Ujvári , Zsolt Szabó , Vincent Bismuth
摘要： A method for monitoring a radiation dose applied to a patient being exposed or having been exposed to radiation from a medical imaging system, the medical imaging system comprising an X-ray source, the X-ray source describing a trajectory in a coordinate system of reference of the medical imaging system having an origin, the method comprising determining the current coordinates, in the coordinate system of reference of the medical imaging system, of a current region being exposed or having been exposed to radiation from the X-ray source, of an envelope of a patient model, in relation to a current position of the X-ray source, determining, from the current coordinates, a current coordinate system of reference having as origin the current position of the X-ray source, the current coordinate system of reference being centered on the current region, and displaying a representation of the current region centered on the current coordinate system of reference.
摘要翻译： 一种用于监测施加到被暴露于或已经暴露于医学成像系统的辐射的患者的辐射剂量的方法，所述医学成像系统包括X射线源，所述X射线源描述参考坐标系中的轨迹 所述方法包括确定所述医学成像系统的所述坐标系参考系中当前正在暴露或已经暴露于来自所述X射线源的辐射的当前区域的当前坐标，所述当前区域被暴露于来自所述X射线源的辐射， 根据当前坐标，确定作为原点的目前的X坐标系的当前坐标系，X射线源的当前位置， 参考以当前区域为中心，并且显示以当前坐标系参考系为中心的当前区域的表示。
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公开(公告)号：US08121192B2
公开(公告)日：2012-02-21
申请号：US11401043
申请日：2006-04-10
申请人： Jean Lienard , Vincent Auvray , Régis Vaillant
发明人： Jean Lienard , Vincent Auvray , Régis Vaillant
IPC分类号： H04N7/12
CPC分类号： G06T5/002 , G06T5/50 , G06T7/223 , G06T2207/10121 , G06T2207/20221 , G06T2207/30004
摘要： A process and system for improving a digital image of an object defined by pixels, acquired at the instant t and generated from an X-ray detector receiving X-rays emitted by a source. The process includes: determining a predicted image of the object at the instant t as a function of the images of the object acquired at the instants t−i, i being a positive whole number greater than or equal to 1, and moving of each of the layers constituting the image acquired at the instant t, the number of layers being previously fixed and the moving of each of the layers being previously determined; and generating a visualized image corresponding to a weighted sum of the predicted image and the image of the object acquired at the instant t, so as to attenuate the noise of the image of the object acquired at the instant t.
摘要翻译： 一种用于改善由时刻t获取并由接收由源发射的X射线的X射线检测器产生的由像素定义的对象的数字图像的处理和系统。 该过程包括：根据在时刻t-i，i为大于或等于1的正整数获得的对象的图像的函数，确定在时刻t的对象的预测图像，以及每个 构成在时刻t获取的图像的层，先前固定的层的数量和预先确定的每个层的移动; 并产生对应于在时刻t获取的预测图像和对象图像的加权和的可视化图像，以便衰减在时刻t获取的对象的图像的噪声。
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公开(公告)号：US07113631B2
公开(公告)日：2006-09-26
申请号：US09920586
申请日：2001-08-01
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , A61B6/584 , G06T2211/404 , G06T2211/412
摘要： The method comprises a phase of reconstruction of a static three-dimensional image of the object from a first set of digitized two-dimensional projected images of the object respectively obtained for different positions of a camera around the object, a phase of acquisition of at least a second set of n static two-dimensional projected images respectively obtained for a same first position of the camera and at n successive propagation times of the contrast medium, and a phase of reconstruction of the dynamic three-dimensional image of the object from each static two-dimensional image of the second set and the reconstructed static three-dimensional image.
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4.发明授权公开(公告)号：US06766048B1
公开(公告)日：2004-07-20
申请号：US09694229
申请日：2000-10-23
申请人： Laurent Launay , Yves Trousset , Régis Vaillant
发明人： Laurent Launay , Yves Trousset , Régis Vaillant
IPC分类号： G06K900
CPC分类号： G06T11/006 , G06T2211/404
摘要： The invention concerns a method of three-dimensional image reconstruction from a set of acquired two-dimensional images. A subsampling is taken of the set of acquired two-dimensional images so as to reduce their resolution. A first analytical algorithm of three-dimensional image reconstruction from low-resolution (LR) acquired two-dimensional images is applied in order to obtain a low-resolution three-dimensional image. A reconstruction support is determined by selecting in the low-resolution three-dimensional image a set of particular voxels. One then applies a second analytical algorithm of three-dimensional image reconstruction from acquired two-dimensional images and considering only the voxels of the reconstruction support in order to obtain the high-resolution (HR) three-dimensional image.
摘要翻译： 本发明涉及从一组获取的二维图像中的三维图像重建的方法。 对所获取的二维图像集进行子采样，以便降低它们的分辨率。 应用低分辨率（LR）获取的二维图像的三维图像重建的第一个分析算法，以获得低分辨率三维图像。 通过在低分辨率三维图像中选择一组特定的体素来确定重建支持。 然后，从采集的二维图像应用三维图像重建的第二分析算法，并且仅考虑重建支持的体素，以获得高分辨率（HR）三维图像。
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公开(公告)号：US06714668B1
公开(公告)日：2004-03-30
申请号：US09651035
申请日：2000-08-30
IPC分类号： G06K900
CPC分类号： G06T3/0006 , G06T7/32 , G06T7/38 , G06T2207/30101
摘要： Method of automatic registration of two- and three-dimensional angiography images by comparison of a two-dimensional digital subtracted angiography image with data on a three-dimensional image reconstructed from rotational angiography sequences, in which a field of distortions in the image is estimated, a conical projection matrix is estimated and an approximation is made of a rigid transformation in space equal to the difference between an initial registration based on the field of distortions and on the conical projection matrix and a perfect registration.
摘要翻译： 通过比较二维数字减影血管造影图像与从旋转血管造影序列重建的三维图像上的数据进行比较，二维和三维血管造影图像的自动对准的方法，其中估计图像中的失真场， 估计一个锥形投影矩阵，并且近似于空间中的刚性变换等于基于失真场的初始配准和圆锥投影矩阵之间的差异以及完美的配准。
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公开(公告)号：US08879808B2
公开(公告)日：2014-11-04
申请号：US13327798
申请日：2011-12-16
申请人： Régis Vaillant
发明人： Régis Vaillant
IPC分类号： A61B6/00 , A61B5/0456
CPC分类号： A61B6/00 , A61B5/0456 , A61B6/463
摘要： A method for interventional imaging of synchronizing a first dataset with a second dataset is provided. The datasets represent a region of interest in a patient, wherein the first dataset and the second dataset each corresponding to two different types of information on the region of interest and wherein the datasets are acquired by separate medical systems. The method comprises aligning the first dataset and the second dataset with at least two signals representing a physiological activity of the patient, the at least two signals having been recorded by the medical systems on a common time scale with the time scale used for acquiring the datasets.
摘要翻译： 提供了一种用于使第一数据集与第二数据集同步的介入成像的方法。 数据集表示患者感兴趣的区域，其中第一数据集和第二数据集各自对应于感兴趣区域上的两种不同类型的信息，并且其中数据集由单独的医疗系统获取。 该方法包括将第一数据集和第二数据集与至少两个表示患者的生理活动的信号对准，所述至少两个信号已被医疗系统以公共时间尺度与用于获取数据集的时间标度一起记录 。
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公开(公告)号：US07327903B2
公开(公告)日：2008-02-05
申请号：US10860725
申请日：2004-06-03
CPC分类号： G06T11/005
摘要： A method and apparatus for imaging including reconstruction of an image of an object from a set of projections acquired for different positions of an acquisition apparatus around the object to be imaged and in which a projection source is situated at a finite distance relative to the acquisition apparatus. The method includes undertaking a set of rectifications of projections acquired for different positions of the acquisition apparatus, rectifications comprising transforming the data of the projection acquired projection into projection data on a virtual rectification support placed in a preset orientation in concordance with a set of reconstruction calculation points distributed over the image to be reconstructed.
摘要翻译： 一种用于成像的方法和装置，包括从针对待成像对象的采集设备的不同位置获取的一组投影中重建物体，并且其中投影源相对于采集设备位于有限的距离 。 该方法包括对采集装置的不同位置采集的投影进行一整套校正，整改包括将投影获取的投影的数据变换为以预定方向放置的虚拟整流支持的投影数据，这与重建计算集 分布在要重建的图像上的点。
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8.发明授权Method and apparatus for determining functional parameters in a radiological apparatus 有权用于确定放射学装置中的功能参数的方法和装置公开(公告)号：US07123682B2
公开(公告)日：2006-10-17
申请号：US10721686
申请日：2003-11-25
IPC分类号： A61B6/02
CPC分类号： A61B6/4441 , A61B6/481 , A61B6/504 , A61B6/507 , A61B6/56
摘要： A method and apparatus for determining a set of functional parameters using a fluoroscopic radiography apparatus of the type comprising an X-ray source, a detector or recorder of the radiation facing the source, the source and the detector or recorder being installed on a mobile support capable of movement with respect to a table placed between the source and the detector or recorder on which a patient with a region of interest to be X-rayed will be placed. The method comprises a) movement of the support following a given movement with respect to the table, repeated during a given time; b) acquisition by the detector or recorder of a series of images of the region of interest during movement of the support with respect to the table; c) reconstitution of a series of three-dimensional models of the region of interest, starting from a series of acquired images; and d) determination of all functional parameters.
摘要翻译： 一种用于使用包括X射线源，面向源的辐射的检测器或记录器，源和检测器或记录器的类型的荧光透视摄影装置来确定一组功能参数的方法和装置，其被安装在移动支架 能够相对于放置在源和检测器或记录器之间的桌子的移动，其上将放置要被X射线照射的区域的患者。 该方法包括：a）在给定时间内重复的给定运动后支撑件相对于桌子移动; b）在支撑件相对于工作台运动期间，检测器或记录器获取感兴趣区域的一系列图像; c）从一系列获取的图像开始重构一系列感兴趣区域的三维模型; 和d）确定所有功能参数。
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公开(公告)号：US06643392B1
公开(公告)日：2003-11-04
申请号：US09667067
申请日：2000-09-21
申请人： Régis Vaillant , Yves Trousset , Jean Lienard , Francisco Sureda
发明人： Régis Vaillant , Yves Trousset , Jean Lienard , Francisco Sureda
IPC分类号： G06K900
CPC分类号： G06T11/005 , G06T11/006 , G06T2211/404 , G06T2211/412 , G06T2211/424
摘要： A process for reconstructing a tridimensional image of an object moving with a substantially cyclic motion, for example the vessels of the human heart, in which, for an acquisition duration extending over several cycles of the movement of the object, an acquisitio of a plurality of initial digital radiographic images is performed using a snapshot apparatus rotating around the object. Initial images having the same temporal occurrence in the course of each cycle are selected respectively in successive cycles so as to form a group of images which is associated with this same temporal occurrence. Several different groups of initial images corresponding respectively to several different temporal occurrences are formed. An intermediate tridimensional representation of the object is reconstructed on the basis of each group of initial images and of an iterative image reconstruction algorithm. A law of spatial deformation between two intermediate tridimensional representations is formulated on the basis of the two intermediate tridimensional representations corresponding to two successive temporal occurrences, and a final tridimensional representation of the object is reconstructed on the basis of the initial images successively acquired, of the spatial deformation laws successively formulated and of an iterative image reconstruction algorithm.
摘要翻译： 一种用于重建以基本循环运动（例如人类心脏的血管）移动的物体的三维图像的过程，其中，对于在物体的运动的几个周期延伸的获取持续时间，获取多个 使用绕物体旋转的快照设备执行初始数字放射照相图像。 分别在连续循环中选择在每个周期的过程中具有相同时间出现的初始图像，以形成与该相同时间出现相关联的一组图像。 形成了分别对应于几个不同时间事件的几组不同的初始图像。 在每组初始图像和迭代图像重建算法的基础上重建对象的中间三维表示。 基于对应于两个连续时间出现的两个中间三维表示来形成两个中间三维表示之间的空间变形规律，并且基于连续获取的初始图像重建对象的最终三维表示 相继制定的空间变形规律和迭代图像重建算法。
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公开(公告)号：US20130243162A1
公开(公告)日：2013-09-19
申请号：US13991112
申请日：2011-10-25
申请人： Lionel Desponds , Pál Tegzes , Székely György , Régis Vaillant , Tamás Ujvári , Zsolt Szabó , Vincent Bismuth
发明人： Lionel Desponds , Pál Tegzes , Székely György , Régis Vaillant , Tamás Ujvári , Zsolt Szabó , Vincent Bismuth
IPC分类号： A61B6/10
摘要： A method for monitoring a radiation dose applied to a patient being exposed or having been exposed to radiation from a medical imaging system, the medical imaging system comprising an X-ray source, the X-ray source describing a trajectory in a coordinate system of reference of the medical imaging system having an origin, the method comprising determining the current coordinates, in the coordinate system of reference of the medical imaging system, of a current region being exposed or having been exposed to radiation from the X-ray source, of an envelope of a patient model, in relation to a current position of the X-ray source, determining, from the current coordinates, a current coordinate system of reference having as origin the current position of the X-ray source, the current coordinate system of reference being centered on the current region, and displaying a representation of the current region centered on the current coordinate system of reference.
摘要翻译： 一种用于监测施加到被暴露于或已经暴露于医学成像系统的辐射的患者的辐射剂量的方法，所述医学成像系统包括X射线源，所述X射线源描述参考坐标系中的轨迹 所述方法包括确定所述医学成像系统的所述坐标系参考系中当前正在暴露或已经暴露于来自所述X射线源的辐射的当前区域的当前坐标，所述当前区域被暴露于来自所述X射线源的辐射， 根据当前坐标，确定作为原点的目前的X坐标系的当前坐标系，X射线源的当前位置， 参考以当前区域为中心，并且显示以当前坐标系参考系为中心的当前区域的表示。
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