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    Simulation of vessels in an image
    1.
    发明授权
    Simulation of vessels in an image 有权
    模拟图像中的血管

    公开(公告)号：US08738344B2

    公开(公告)日：2014-05-27

    申请号：US13237535

    申请日：2011-09-20

    申请人： Eric Pichon ,  Michel F. Grimaud ,  Yves Lucien Trousset

    发明人： Eric Pichon ,  Michel F. Grimaud ,  Yves Lucien Trousset

    IPC分类号： A61B5/02

    CPC分类号： G06T7/0012 ,  G06T7/149 ,  G06T2207/20161 ,  G06T2207/30101

    摘要： A method for processing an image of a body region is provided, the region comprising a plurality of vessels capable of propagating a fluid of the body, the image comprising a plurality of pixels each being associated with an intensity. The method comprising determining, for each pixel, a probability that the pixel belongs to a vessel, based on the intensity of the pixel; simulating a propagation of the fluid from at least one source pixel towards the pixels of the image, the propagation being simulated to have a velocity that is function of the probability that the pixels of the image belong to a vessel; and inferring from the simulation a propagation time between the source pixel and each of the pixels of the image.

    摘要翻译： 提供了一种用于处理身体区域的图像的方法，所述区域包括能够传播身体的流体的多个容器，所述图像包括多个像素，每个像素与强度相关联。 该方法包括基于像素的强度为每个像素确定像素属于血管的概率; 模拟流体从至少一个源像素向图像的像素的传播，所述传播被模拟为具有图像的像素属于容器的概率函数的速度; 并从模拟中推断源像素与图像的每个像素之间的传播时间。

    SIMULATION OF VESSELS IN AN IMAGE
    2.
    发明申请
    SIMULATION OF VESSELS IN AN IMAGE 有权
    在图像中模拟船舶

    公开(公告)号：US20120008840A1

    公开(公告)日：2012-01-12

    申请号：US13237535

    申请日：2011-09-20

    申请人： Eric Pichon ,  Michel F. Grimaud ,  Yves Lucien Trousset

    发明人： Eric Pichon ,  Michel F. Grimaud ,  Yves Lucien Trousset

    IPC分类号： G06K9/00

    CPC分类号： G06T7/0012 ,  G06T7/149 ,  G06T2207/20161 ,  G06T2207/30101

    摘要： A method for processing an image of a body region is provided, the region comprising a plurality of vessels capable of propagating a fluid of the body, the image comprising a plurality of pixels each being associated with an intensity. The method comprising determining, for each pixel, a probability that the pixel belongs to a vessel, based on the intensity of the pixel; simulating a propagation of the fluid from at least one source pixel towards the pixels of the image, the propagation being simulated to have a velocity that is function of the probability that the pixels of the image belong to a vessel; and inferring from the simulation a propagation time between the source pixel and each of the pixels of the image.

    摘要翻译： 提供了一种用于处理身体区域的图像的方法，所述区域包括能够传播身体的流体的多个容器，所述图像包括各自与强度相关联的多个像素。 该方法包括基于像素的强度为每个像素确定像素属于血管的概率; 模拟流体从至少一个源像素向图像的像素的传播，所述传播被模拟为具有图像的像素属于容器的概率函数的速度; 并从模拟中推断源像素与图像的每个像素之间的传播时间。

    X-RAY IMAGING DEVICE WITH A C-SHAPED ARM AND AN ANTI-COLLISION UNIT
    3.
    发明申请
    X-RAY IMAGING DEVICE WITH A C-SHAPED ARM AND AN ANTI-COLLISION UNIT 审中-公开
    具有C形ARM和抗冲突单元的X射线成像装置

    公开(公告)号：US20120106708A1

    公开(公告)日：2012-05-03

    申请号：US13269785

    申请日：2011-10-10

    申请人： Yves Lucien Trousset ,  Bernard Bouvier

    发明人： Yves Lucien Trousset ,  Bernard Bouvier

    IPC分类号： H05G1/08

    CPC分类号： A61B6/586 ,  A61B6/102 ,  A61B6/4441 ,  A61B6/547

    摘要： The invention relates to a control process for a medical imaging device comprising an anti-collision unit, a source of X-rays, an image detector, a control unit for the source of X-rays and for the image detector. The process comprises determining at least one trajectory of the source of X-rays and of the image detector as a function of at least one previously fixed control parameter by means of the control unit, locating in space at least one object that may be on the at least one trajectory, and verifying that the at least one trajectory of the source of X-rays and the image detector will not risk a collision between the source of X-rays and the at least one object or the image detector and the at least one object.

    摘要翻译： 本发明涉及一种医疗成像设备的控制过程，包括防冲突单元，X射线源，图像检测器，用于X射线源的控制单元和图像检测器。 该过程包括通过控制单元确定X射线源和图像检测器的至少一个轨迹作为至少一个先前固定的控制参数的函数，在空间中定位至少一个可能在 至少一个轨迹，并且验证X射线源和图像检测器的至少一个轨迹不会危及X射线源与至少一个物体或图像检测器之间的碰撞，并且至少 一个对象

    Calibration procedure for the relative position of a table and C-Arm on a medical imaging system
    7.
    发明授权
    Calibration procedure for the relative position of a table and C-Arm on a medical imaging system 有权
    表和C-Arm在医学成像系统上的相对位置的校准程序

    公开(公告)号：US08182150B2

    公开(公告)日：2012-05-22

    申请号：US12704321

    申请日：2010-02-11

    申请人： Sebastien Gorges ,  Yves Lucien Trousset

    发明人： Sebastien Gorges ,  Yves Lucien Trousset

    IPC分类号： G01D18/00

    CPC分类号： A61B6/4441 ,  A61B6/0457 ,  A61B6/584

    摘要： A method of calibrating a mechanical model of behavior and movement of an interventional radiology table by moving the table over at least one degree of freedom, acquiring at least one set of images corresponding to different positions of the table and C-arm, obtaining at least one set of images of a test object from different positions, using the images of the test object to determine parameters of the mechanical model of table behavior and movement, and combining these parameters with data given by table movement sensors so as to deduce the true relative positions of the table with respect to the medical imaging system.

    摘要翻译： 通过在至少一个自由度上移动所述表来校准介入放射学表的行为和运动的机械模型的方法，获取对应于所述表和C臂的不同位置的至少一组图像，至少获得 一组来自不同位置的测试对象的图像，使用测试对象的图像来确定表格行为和运动的机械模型的参数，并将这些参数与表移动传感器给出的数据相结合，以推导出真实相对 桌子相对于医学成像系统的位置。

    Method to correct the registration of radiography images
    8.
    发明授权
    Method to correct the registration of radiography images 有权
    纠正放射摄影图像注册的方法

    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。

    Method for acquisition geometry of an imaging system
    9.
    发明授权
    Method for acquisition geometry of an imaging system 有权
    成像系统采集几何的方法

    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。