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1.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：US07242402B1
公开(公告)日：2007-07-10
申请号：US09594873
申请日：2000-06-15
CPC分类号： G06T19/00 , G06T2219/008
摘要： The invention concerns a method of visualization of a part of a three-dimensional image. The part is defined by a finite predetermined volume, a sphere, for example, the center of which is located on an element of interest present in the three-dimensional image. In order to do so, a point is selected on the element of interest, a sphere is created in the three-dimensional image, the dimensions of which are predetermined and the center of which is the point on the element of interest, an intersection is made between the sphere and the three-dimensional image, and then the part of the three-dimensional image contained in the sphere is displayed.
摘要翻译： 本发明涉及一种可视化三维图像的一部分的方法。 该部分由有限的预定体积定义，球体例如其中心位于三维图像中存在的感兴趣元素上。 为了这样做，在感兴趣的元素上选择一个点，在三维图像中创建球体，其尺寸是预定的，其中心是感兴趣元素上的点，交点是 在球体和三维图像之间形成，然后显示包含在球体中的三维图像的一部分。
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公开(公告)号：US07066646B2
公开(公告)日：2006-06-27
申请号：US10737078
申请日：2003-12-16
IPC分类号： G01D18/00
CPC分类号： A61B6/583
摘要： In the field of medical imaging minimizing the number of acquisitions required to calibrate a radiological device. Calibration of the radiological imaging device is provided by moving the device with respect to a calibration object and performing a series of acquisitions, each acquisition being associated to a calibration position of the device. Based on the acquisitions performed, determining the projection parameters associated to each calibration position of the device. For an additional position that has not been taken by the device during the acquisition, determining the projection parameter values associated to this additional position according to the parameters associated to the calibration positions.
摘要翻译： 在医学成像领域，最小化校准放射性装置所需的采集次数。 通过相对于校准对象移动设备并且执行一系列获取来提供放射性成像设备的校准，每个采集与设备的校准位置相关联。 基于执行的获取，确定与设备的每个校准位置相关联的投影参数。 对于在采集期间设备尚未采取的附加位置，根据与校准位置相关联的参数确定与该附加位置相关联的投影参数值。
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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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5.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：US06320928B1
公开(公告)日：2001-11-20
申请号：US09254094
申请日：1999-03-01
申请人： Régis Vaillant , Yves Trousset , Romain Boucherie , René Romeas
发明人： Régis Vaillant , Yves Trousset , Romain Boucherie , René Romeas
IPC分类号： A61B600
CPC分类号： G06T11/006 , A61B6/583 , G06T2211/404 , G06T2211/424
摘要： A set of digital two-dimensional projected images of an object is acquired for different positions of a camera rotating around an object. The projected images are calibrated into a volume containing the object and divided into voxels, the space coordinates of which are identified in a chosen calibration frame of reference. A pretreatment is applied on each acquired image in order to elaborate a rectified image having a predetermined spatial orientation selected as a function of a chosen specific axis of the calibration frame of reference, and an iterative algorithm of algebraic image reconstruction between each rectified image and the set of voxels is applied by successively treating the voxels in a predetermined order linked to the choice of said specific axis, which makes it possible to minimize the duration of reconstruction of the three-dimensional image.
摘要翻译： 对于围绕物体旋转的相机的不同位置，获取对象的一组数字二维投影图像。 将投影图像校准成包含对象的体积并且被分成体素，其体空间坐标在选定的校准参考系中被识别。 对每个获取的图像应用预处理，以便制定具有根据校准参考系的所选择的特定轴的函数选择的具有预定空间取向的整流图像，以及每个整流图像与第二图像之间的代数图像重建的迭代算法 通过以与所述特定轴的选择相关联的预定顺序连续处理体素来应用一组体素，这使得可以最小化三维图像的重建的持续时间。
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公开(公告)号：US20050022158A1
公开(公告)日：2005-01-27
申请号：US10757859
申请日：2004-01-15
申请人： Laurent Launay , Yves Trousset , Cyril Riddell
发明人： Laurent Launay , Yves Trousset , Cyril Riddell
CPC分类号： G06T19/00 , A61B6/00 , A61B6/469 , G06T2210/41 , G06T2219/2016
摘要： A medical imaging device and method having a display screen, a processor for processing image data in order to display the data in the form of a 3D model, and a user interface. The processor acquires at least two points positioned in the 3D model via the user interface; deduces the positioning of an axis defined by the two points in the 3D model, and reorients the 3D model in such a manner that the axis as indicated in this way is to be found in a predefined orientation relative to the plane of the display screen.
摘要翻译： 一种具有显示屏的医疗成像装置和方法，用于处理图像数据以便以3D模型的形式显示数据的处理器和用户界面。 处理器经由用户界面获取位于3D模型中的至少两个点; 推导出由3D模型中的两个点定义的轴的定位，并且以这样的方式重新定向3D模型，使得以相对于显示屏的平面的预定义方向找到以这种方式指示的轴。
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9.发明授权Apparatus and method for providing a three-dimensional radiographic image of an object 失效用于提供物体的三维放射照相图像的装置和方法公开(公告)号：US06834096B2
公开(公告)日：2004-12-21
申请号：US10116625
申请日：2002-04-04
申请人： Laurent Launay , Sébastien Gicquel , Yves Trousset
发明人： Laurent Launay , Sébastien Gicquel , Yves Trousset
IPC分类号： A61B600
CPC分类号： G06T11/008 , A61B6/5258 , G06T2211/404
摘要： An apparatus and method comprises an acquisition of a first series of projected two-dimensional mask images of the object obtained for different positions of a camera around the object; an acquisition of a second series of opacified projected two-dimensional images of the object obtained at the same positions of the camera around the object; a phase of elaboration of a third series of subtracted projected two-dimensional images respectively obtained from the first and second series of images; a reconstruction of a three-dimensional subtracted image from the third series of images and from an analytical algorithm of image reconstruction; a reconstruction of a three-dimensional mask image from the first series of images and from an analytical algorithm of image reconstruction; a phase of identification of defects in the three-dimensional mask image; and elimination of the corresponding voxels in the three-dimensional subtracted image.
摘要翻译： 一种装置和方法包括获取针对物体周围的相机的不同位置获得的对象的第一系列投影的二维掩模图像; 获取在相机周围物体的相同位置获得的对象的第二系列不透明投影的二维图像的获取; 分别从第一和第二系列图像获得的第三系列减法投影的二维图像的制作阶段; 从第三系列图像和图像重建的分析算法重建三维相减图像; 从第一系列图像和图像重建的分析算法重建三维掩模图像; 识别三维掩模图像中的缺陷的阶段; 并消除三维相减图像中的相应体素。
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公开(公告)号：US07671887B2
公开(公告)日：2010-03-02
申请号：US11561727
申请日：2006-11-20
IPC分类号： H04N5/14
CPC分类号： A61B90/36 , A61B34/20 , A61B2034/102 , A61B2034/105 , A61B2034/2051 , A61B2090/376 , A61B2090/3762
摘要： A system for navigating an image-guided object through an imaged subject supported on table in relation to an image acquired by an image detector is provided. The system includes a first tracking element attached to the patient, and a second tracking element attached at the table. The first and second tracking elements define first and second coordinate systems. A controller is operable to register the second coordinate system with a third coordinate system defined by the image detector, measure a spatial relation between the first tracking element and the second tracking element, register the first coordinate system with the third local coordinate system defined by the image detector based on the spatial relation between the first and second tracking elements, and generating a composite image comprising a virtual image of the object in spatial relation to the image of the imaged subject acquired by the image detector.
摘要翻译： 提供了一种用于通过相对于由图像检测器获取的图像支持在桌子上的成像对象导航图像引导对象的系统。 系统包括附接到患者的第一跟踪元件和附接在桌子上的第二跟踪元件。 第一和第二跟踪元件限定第一和第二坐标系。 控制器可操作以用由图像检测器定义的第三坐标系寄存第二坐标系，测量第一跟踪元件和第二跟踪元件之间的空间关系，将第一坐标系与第三坐标系定义为第三坐标系 基于第一和第二跟踪元件之间的空间关系的图像检测器，以及生成包括与由图像检测器获取的被成像对象的图像呈空间关系的对象的虚拟图像的合成图像。
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