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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：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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公开(公告)号：US06854884B2
公开(公告)日：2005-02-15
申请号：US10116622
申请日：2002-04-04
CPC分类号： A61B6/583
摘要： A system and method of calibrating an imaging system, in which intrinsic parameters relating to the various types of image which can be taken are calibrated in predetermined angular positions of an emitter of radiation, and of a receiver of the radiation. The intrinsic parameters are estimated using a two-dimensional phantom in order to establish a distortion field for a particular angulation, the distortion field for any angulation being calculated by polynomial interpolation of the distortion fields, each established for a control point, a control point being defined by a particular angulation for each axis of rotation of the imaging system, having to be subject to calibration.
摘要翻译： 一种校准成像系统的系统和方法，其中与可以拍摄的各种类型的图像有关的固有参数在辐射发射器的预定角度位置和辐射的接收器中被校准。 使用二维体模估计固有参数，以便为特定角度建立失真场，通过对控制点建立的失真场的多项式插值来计算任何角度的失真场，控制点为 由成像系统的每个旋转轴的特定角度限定，必须进行校准。
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公开(公告)号：US07559694B2
公开(公告)日：2009-07-14
申请号：US11293940
申请日：2005-12-05
申请人： Sébastien Gorges , Yves Lucien Trousset , Jérémie Pescatore , Erwan Kerrien , Marie-Odile Berger , Régis Vaillant
发明人： Sébastien Gorges , Yves Lucien Trousset , Jérémie Pescatore , Erwan Kerrien , Marie-Odile Berger , Régis Vaillant
IPC分类号： G01D18/00
CPC分类号： A61B6/584 , A61B6/4441 , A61B6/583 , G06T11/005
摘要： A method for determining acquisition geometry of an imaging system from a set of calibration matrices for an arbitrary position of the system, a projection matrix makes a point in a 2D image correspond to a point of an object in a space. This matrix is produced for any unspecified position of the system from knowledge of a limited number of pre-computed calibration matrices. For instance, a projection matrix may be computed by interpolating coefficients of calibration matrices and/or applying a transformation with a rigid model defined comprehensively or locally to a particular calibration matrix.
摘要翻译： 一种用于从系统的任意位置的一组校准矩阵确定成像系统的采集几何的方法，投影矩阵使2D图像中的点对应于空间中的对象的点。 根据有限数量的预先计算的校准矩阵的知识，对于该系统的任何未指定的位置产生该矩阵。 例如，投影矩阵可以通过内插校准矩阵的系数和/或应用具有全局或局部定义到特定校准矩阵的刚性模型来进行变换来计算。
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公开(公告)号：US06879711B2
公开(公告)日：2005-04-12
申请号：US09737878
申请日：2001-06-25
申请人： Eric Maurincomme , Erwan Kerrien
发明人： Eric Maurincomme , Erwan Kerrien
CPC分类号： G06T5/50 , Y10S128/922
摘要： Method of automatic registration of three-dimensional images making possible visualization of the blood vessels, by comparison of a three-dimensional digital image obtained by means of a radiology apparatus and a three-dimensional digital image obtained by means of a nuclear magnetic resonance apparatus, in which, from a point of correspondence between the two three-dimensional images, an estimate is made by processing of the projected two-dimensional images of a rotation capable of registering the two three-dimensional images, then an estimate is made by processing of the projected two-dimensional images of a translation capable of registering the two three-dimensional images, and one of the two three-dimensional images is registered in relation to the other.
摘要翻译： 通过比较通过放射学装置获得的三维数字图像和通过核磁共振装置获得的三维数字图像，自动对准使血管可视化的三维图像的方法， 其中，从两个三维图像之间的对应点，通过处理能够记录两个三维图像的旋转的投影的二维图像进行估计，然后通过处理 可以相对于另一个登记能够登记两个三维图像的翻译的投影二维图像和两个三维图像中的一个。
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公开(公告)号：US07123255B2
公开(公告)日：2006-10-17
申请号：US10125242
申请日：2002-04-17
申请人： Yves Trousett , Laurent Launay , Erwan Kerrien
发明人： Yves Trousett , Laurent Launay , Erwan Kerrien
IPC分类号： G06T15/00
CPC分类号： G06T19/00 , G06T2210/41 , G06T2219/028 , G06T2219/2004
摘要： A method and system for medical image display comprising means for acquiring two-dimensional images; means for displaying images; means for managing the display of a three-dimensional representation on the means display and for automatically orienting the three-dimensional representation according to at least one operating parameter of the means for acquisition means so that the three-dimensional representation is viewed on the means for display from a viewpoint corresponding to that from which the means for image acquisition acquire or have acquired a two-dimensional image.
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公开(公告)号：US20070172033A1
公开(公告)日：2007-07-26
申请号：US11293940
申请日：2005-12-05
申请人： Sebastien Gorges , Yves Trousset , Jeremie Pescatore , Erwan Kerrien , Marie-Odile Berger , Regis Vaillant
发明人： Sebastien Gorges , Yves Trousset , Jeremie Pescatore , Erwan Kerrien , Marie-Odile Berger , Regis Vaillant
IPC分类号： G01D18/00
CPC分类号： A61B6/584 , A61B6/4441 , A61B6/583 , G06T11/005
摘要： A method and apparatus for determining acquisition geometry of an imaging system from a set of calibration matrices for an arbitrary position of the system, a projection matrix makes a point in a 2D image correspond to a point of an object in a space. This matrix is produced for any unspecified position of the system from knowledge of a limited number of pre-computed calibration matrices. For instance, a projection matrix may be computed by interpolating coefficients of calibration matrices and/or applying a transformation with a rigid model defined comprehensively or locally to a particular calibration matrix.
摘要翻译： 一种用于从系统的任意位置的一组校准矩阵确定成像系统的获取几何的方法和装置，投影矩阵使2D图像中的点对应于空间中的对象的点。 根据有限数量的预先计算的校准矩阵的知识，对于该系统的任何未指定的位置产生该矩阵。 例如，投影矩阵可以通过内插校准矩阵的系数和/或应用具有全局或局部定义到特定校准矩阵的刚性模型来进行变换来计算。
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公开(公告)号：US20090022381A1
公开(公告)日：2009-01-22
申请号：US12170465
申请日：2008-07-10
申请人： Sebastien Gorges , Yves Lucien Trousset , Jeremie Pescatore , Erwan Kerrien , Marie-Odile Berger
发明人： Sebastien Gorges , Yves Lucien Trousset , Jeremie Pescatore , Erwan Kerrien , Marie-Odile Berger
IPC分类号： G06K9/36
CPC分类号： A61B6/583 , A61B5/1127 , A61B6/4441 , A61B6/5235 , A61B6/547 , G06T7/33 , G06T7/38 , G06T2207/30101
摘要： A method for the correction of registration of radiography images comprises means to determine a residual rigid transformation in comparing the pre-operation 3D image with a fluoroscopic image. This residual transformation is determined according to a registration based on the content of the image. Once the residual transformation is computed, it is combined with a geometrical registration. The use of the geometrical registration in this combination enables the making of a real-time registration comprising the motion of the C-arm without any additional registration. And the use of the registration based on the content of the image enables the precision of said geometrical registration to be refined.
摘要翻译： 用于校正放射线照相图像的注册的方法包括在将术前3D图像与荧光透视图像进行比较时确定残余刚性变换的装置。 根据基于图像的内容的登记来确定该残差变换。 一旦计算了残差变换，就将其与几何配准结合起来。 在这种组合中使用几何配准使得能够进行包括C形臂的运动的实时记录而不进行任何额外的注册。 并且，基于图像的内容的登记的使用使得可以精简所述几何注册的精度。
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9.发明申请公开(公告)号：US20080267490A1
公开(公告)日：2008-10-30
申请号：US11740734
申请日：2007-04-26
申请人： Sebastien Gorges , Yves L. Trousset , Jeremie Pescatore , Vincent Bismuth , Marie-Odile Berger , Erwan Kerrien
发明人： Sebastien Gorges , Yves L. Trousset , Jeremie Pescatore , Vincent Bismuth , Marie-Odile Berger , Erwan Kerrien
IPC分类号： G06T17/00
CPC分类号： G06T19/00 , G06T15/503 , G06T2207/10121 , G06T2207/30021
摘要： A system to track movement of an object travelling through an imaged subject is provided. The system includes an imaging system to acquire a fluoroscopic image and operable to create a three-dimensional model of a region of interest of the imaged subject. A controller includes computer-readable program instructions representative of the steps of calculating a probability that an acquired image data is of the object on a per pixel basis in the fluoroscopic image, calculating a value of a blending coefficient per pixel of the fluoroscopic image dependent on the probability, adjusting the fluoroscopic image including multiplying the value of the blending coefficient with one of a greyscale value, a contrast value, and an intensity value for each pixel of the fluoroscopic image. The adjusted fluoroscopic image is combined with the three-dimensional model to create an output image illustrative of the object in spatial relation to the three-dimensional model.
摘要翻译： 提供了跟踪穿过成像对象的物体的运动的系统。 该系统包括用于获取透视图像并且可操作以创建被成像对象的感兴趣区域的三维模型的成像系统。 控制器包括表示以下步骤的计算机可读程序指令：在荧光镜图像中以每像素为基础计算所获取的图像数据为对象的概率的步骤，计算依赖于荧光检查图像的透视图像的每像素的混合系数的值 调整透视图像，包括将混合系数的值与透视图像的每个像素的灰度值，对比度值和强度值之一相乘。 将经调整的透视图像与三维模型组合以创建说明与三维模型呈空间关系的对象的输出图像。
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公开(公告)号：US08180132B2
公开(公告)日：2012-05-15
申请号：US12170465
申请日：2008-07-10
申请人： Sebastien Gorges , Yves Lucien Trousset , Jeremie Pescatore , Erwan Kerrien , Marie-Odile Berger
发明人： Sebastien Gorges , Yves Lucien Trousset , Jeremie Pescatore , Erwan Kerrien , Marie-Odile Berger
IPC分类号： G06K9/00
CPC分类号： A61B6/583 , A61B5/1127 , A61B6/4441 , A61B6/5235 , A61B6/547 , G06T7/33 , G06T7/38 , G06T2207/30101
摘要： A system and method for correcting the registration of a 3D image and a 2D image acquired with medical imaging systems is disclosed. The system and method determines acquisition geometry of the imaging system by calculating an initial projection matrix associated with the 2D image. The system performs a projection of the 3D image using the initial projection matrix resulting in a 2D projection of the 3D image. The system registers the 2D projection of the 3D image and the 2D image. A new projection matrix is determined based on the registration of the 2D image and the 2D projection of the 3D image. The 3D image is then registered with the 2D image using the new projection matrix. An associated medical imaging system is disclosed. Method embodiments use previously acquired 3D images or images acquired using imaging modalities different than the one used to acquire the 2D image.
摘要翻译： 公开了一种用于校正用医学成像系统获取的3D图像和2D图像的配准的系统和方法。 该系统和方法通过计算与2D图像相关联的初始投影矩阵来确定成像系统的采集几何。 该系统使用导致3D图像的2D投影的初始投影矩阵来执行3D图像的投影。 系统注册3D图像和2D图像的2D投影。 基于2D图像的注册和3D图像的2D投影来确定新的投影矩阵。 然后使用新的投影矩阵将3D图像与2D图像一起登记。 公开了一种相关联的医学成像系统。 方法实施例使用先前获取的3D图像或使用与用于获取2D图像的成像模式不同的成像模式获取的图像。
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