公开(公告)号：US08326403B2

公开(公告)日：2012-12-04

申请号：US11355733

申请日：2006-02-16

申请人： Jérémie Pescatore ,  Benoit Le Ny ,  Sébastien Gorges ,  Marie-Odile Berger

发明人： Jérémie Pescatore ,  Benoit Le Ny ,  Sébastien Gorges ,  Marie-Odile Berger

IPC分类号： A61B5/05

CPC分类号： A61B6/12 ,  A61B6/02 ,  A61B6/583

摘要： A method and apparatus for determining the three-dimensional movement of a patient positioned on a table between an X-ray source and an image receiver of an X-ray imaging apparatus is presented. The apparatus has an X-ray source positioned opposite an image receiver, the X-ray source and the image receiver being driven in rotation about an axis. The method and apparatus has the following operation: radio-opaque markers are placed on the patient's body; at least one first radiographic image of the patient is taken for a first determined fixed position of the imaging apparatus; at least one second radiographic image of the patient is taken for a second determined fixed position; and a matrix of the three-dimensional movement of the patient is determined on the basis of the two-dimensional movements of the markers in the radiographic images, the X-ray source constituting a fixed reference frame.

摘要翻译： 提出了一种用于确定位于X射线成像装置的X射线源和图像接收器之间的台上的患者的三维运动的方法和装置。 该装置具有与图像接收器相对定位的X射线源，X射线源和图像接收器围绕轴线旋转驱动。 该方法和装置具有以下操作：将不透射线的标记放置在患者身上; 拍摄患者的至少一个第一放射照相图像用于成像装置的第一确定的固定位置; 拍摄患者的至少一个第二放射照相图像用于第二确定的固定位置; 并且基于放射线照相图像中的标记的二维运动来确定患者的三维运动的矩阵，X射线源构成固定的参考帧。

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。

公开(公告)号：US07066646B2

公开(公告)日：2006-06-27

申请号：US10737078

申请日：2003-12-16

申请人： Jérémie Pescatore ,  Cyril Riddell ,  Yves Trousset ,  Régis Vaillant

发明人： Jérémie Pescatore ,  Cyril Riddell ,  Yves Trousset ,  Régis Vaillant

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。

公开(公告)号：US07327903B2

公开(公告)日：2008-02-05

申请号：US10860725

申请日：2004-06-03

申请人： Cyril Riddell ,  Yves Trousset ,  Régis Vaillant ,  Jérémie Pescatore

发明人： Cyril Riddell ,  Yves Trousset ,  Régis Vaillant ,  Jérémie Pescatore

IPC分类号： G06K9/32 ,  G06K9/00 ,  G06K9/36

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。

公开(公告)号：US09058654B2

公开(公告)日：2015-06-16

申请号：US14234292

申请日：2012-07-20

申请人： Jérémie Pescatore ,  Carole Amiot

发明人： Jérémie Pescatore ,  Carole Amiot

IPC分类号： G06K9/00 ,  G06K9/40 ,  G06T5/00

CPC分类号： G06T5/002 ,  G06T2207/10121 ,  G06T2207/20012 ,  G06T2207/20016 ,  G06T2207/20182 ,  G06T2207/30004

摘要： In the field of medical imaging using fluoroscopy, a method for reducing noise in a sequence of fluoroscopic images acquired by an X-ray detector comprises for each image (xn) of the sequence: applying temporal filtering to the image (xn) at instant n, the temporal filtering comprising fluoroscopic noise reduction processing; applying spatial filtering to the image (yn) at instant n, the spatial filtering comprising: transforming the image (yn) acquired at the instant n from the spatial domain into the curvelet domain using a curvelet transform, each transformed image being represented by a set of coefficients, thresholding the coefficients of the image (yn) using a thresholding function, the thresholding function cancelling the coefficients below a third predetermined threshold, and preserving or adjusting the coefficients above the third predetermined threshold, transforming the image (Zn) whose coefficients have been thresholded from the curvelet domain into the spatial domain using an inverse curvelet transform.

摘要翻译： 在使用荧光透视的医学成像领域中，通过X射线检测器获取的荧光镜像的序列中的噪声降低方法包括：序列的每个图像（xn）：在时刻n对图像（xn）应用时间滤波 所述时间滤波包括荧光检测降噪处理; 在时刻n对图像（yn）应用空间滤波，空间滤波包括：使用曲线变换将从时空n获取的图像（yn）变换成曲线域，每个变换图像由集合 的系数，使用阈值函数对图像（yn）的系数进行阈值化，阈值处理功能将系数取消低于第三预定阈值，以及保持或调整高于第三预定阈值的系数，变换其系数具有的图像（Zn） 使用逆曲线变换将曲线段域阈值化为空间域。

公开(公告)号：US20140153842A1

公开(公告)日：2014-06-05

申请号：US14234292

申请日：2012-07-20

申请人： Jérémie Pescatore ,  Carole Amiot

发明人： Jérémie Pescatore ,  Carole Amiot

IPC分类号： G06T5/00

CPC分类号： G06T5/002 ,  G06T2207/10121 ,  G06T2207/20012 ,  G06T2207/20016 ,  G06T2207/20182 ,  G06T2207/30004

摘要： In the field of medical imaging using fluoroscopy, a method for reducing noise in a sequence of fluoroscopic images acquired by an X-ray detector comprises for each image (xn) of the sequence: applying temporal filtering to the image (xn) at instant n, the temporal filtering comprising fluoroscopic noise reduction processing; applying spatial filtering to the image (yn) at instant n, the spatial filtering comprising: transforming the image (yn) acquired at the instant n from the spatial domain into the curvelet domain using a curvelet transform, each transformed image being represented by a set of coefficients, thresholding the coefficients of the image (yn) using a thresholding function, the thresholding function cancelling the coefficients below a third predetermined threshold, and preserving or adjusting the coefficients above the third predetermined threshold, transforming the image (zn) whose coefficients have been thresholded from the curvelet domain into the spatial domain using an inverse curvelet transform.

摘要翻译： 在使用荧光透视的医学成像领域中，通过X射线检测器获取的荧光镜像的序列中的噪声降低方法包括：序列的每个图像（xn）：在时刻n对图像（xn）应用时间滤波 所述时间滤波包括荧光检测降噪处理; 在时刻n对图像（yn）应用空间滤波，空间滤波包括：使用曲线变换将从时空n获取的图像（yn）变换成曲线域，每个变换图像由集合 的系数，使用阈值函数阈值化图像的系数（yn），阈值处理函数将系数取消低于第三预定阈值，以及保持或调整高于第三预定阈值的系数，变换其系数具有的图像（zn） 使用逆曲线变换将曲线段域阈值化为空间域。