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    • 24. 发明授权
    • Procedure for automatic position-finding of points of interest during a
mammography examination using stereotactic technique
    • 使用立体定位技术在乳房X线照相检查期间自动定位感兴趣的程序
    • US5544219A
    • 1996-08-06
    • US332743
    • 1994-11-01
    • Serge MullerMichel GrimaudRobert Heidsieck
    • Serge MullerMichel GrimaudRobert Heidsieck
    • A61B19/00G06T5/20G06T5/30G06T7/00H04N13/00A61B6/12
    • G06T5/30A61B90/10G06T7/0042G06T2207/10012G06T2207/30068H04N2013/0074
    • A process is disclosed which involves automatic position-finding for a point of interest of an object that exhibits high contrast as compared with surrounding tissues, the process being carried out by means of a stereotactic photographic device that includes a digital image acquisition system. The process includes a number of steps for each image belonging to the pair of stereotactic images. An initial analysis of a histogram of the image pixels are made, and a subsequent determination is made of a threshold corresponding to the difference between the high contrast objects and the surrounding tissues. A subsequent determination is made of the threshold of the image, in order to obtain a binary image incorporating two gray levels. This is followed by the filtering of the threshold determined image in the preceding step, based on morphological criteria of the object in which the point of interest is located. This operation is designed to obtain a segmented projection of the object of interest. This is followed by the localization of the point of interest in the image reference mark. Utilization of the process is for stereotactic examinations performed during mammography.
    • 公开了一种涉及与周围组织相比显示高对比度的物体的感兴趣点的自动位置查找的过程,该过程通过包括数字图像采集系统的立体定向照相装置进行。 该过程包括属于一对立体定向图像的每个图像的多个步骤。 进行图像像素的直方图的初始分析,并且随后确定对应于高对比度对象与周围组织之间的差的阈值。 随后确定图像的阈值,以便获得并入两个灰度级的二进制图像。 接下来是基于目标位置的对象的形态标准对前一步骤中的阈值确定图像的过滤。 该操作被设计为获得感兴趣对象的分段投影。 接下来是图像参考标记中的兴趣点的本地化。 该过程的利用是在乳房X线照相术期间进行的立体定向检查。
    • 25. 发明授权
    • Method for processing images obtained by tomosynthesis and associated device
    • 用于处理通过层析合成和相关设备获得的图像的方法
    • US08798348B2
    • 2014-08-05
    • US12371968
    • 2009-02-17
    • Serge MullerSylvie Puong
    • Serge MullerSylvie Puong
    • G06K9/00
    • G06T11/006G06T2211/436
    • A processing method for images obtained by tomosynthesis comprising acquisition of a plurality of 2D projection images of a region of interest of a patient; reconstruction of a 3D digital image from the acquired 2D projection images. An embodiment of the method is characterized in that it comprises: detection of an object in the reconstructed 3D image; estimation of a thickness limit characteristic of a contrast default of the voxels for a diameter of the object; estimation of the thickness of the object; comparison of the thickness of the object to the thickness limit; and in that if the thickness of the object is less than the thickness limit, the method further comprises application at least to the voxels of the object in the reconstructed image of a multiplicative corrective factor equal to the ratio between the thickness limit and the thickness of the object.
    • 一种通过层析合成获得的图像的处理方法,包括获取患者感兴趣区域的多个2D投影图像; 从所获取的2D投影图像重建3D数字图像。 该方法的一个实施例的特征在于它包括:检测重建的3D图像中的对象; 估计对象的直径的体素的对比度默认值的厚度限制特性; 估计物体的厚度; 对象厚度与厚度限制的比较; 并且如果物体的厚度小于厚度限制,则该方法还包括至少对重建图像中的物体的体素应用等于在厚度极限和厚度之间的比率的乘法校正因子 物体。
    • 26. 发明授权
    • Procedure for deriving a three-dimensional digital mask starting from a series of two-dimensional masks, plus a device for doing this
    • 从一系列二维掩模开始的三维数字掩模的推导以及用于执行此操作的设备的步骤
    • US08335809B2
    • 2012-12-18
    • US12339209
    • 2008-12-19
    • Giovanni PalmaSerge MullerRazvan Iordache
    • Giovanni PalmaSerge MullerRazvan Iordache
    • G06F17/17G06K9/00
    • G06T11/005A61B6/027G06T2207/10112G06T2207/30068
    • A derivation procedure for a three-dimensional digital mask from a series of two-dimensional masks in a radiographic device containing a source (S) of X-rays, a means of recording and a volume of interest hat contains the object to be X-rayed located between the source (S) and the means of recording consists of an extrapolation of each mask Mθ2 includes determining a last segment 1fin beyond the limits of the means of recording; and working out a two-dimensional mask Mγ associated with a position Sγ of the source, for any angle γ included in the angular range θ2 to θ1 (a position close to θ2). For every parallel segment 1 located between segment d (or d′ respectively) and segment 1fin, the procedure further includes deriving a three-dimensional mask (21) of the object for each voxel at the intersection of plane P1θ2 and the volume of interest; and projecting the three-dimensional mask onto the segment 1.
    • 一种用于在包含X射线源(S)的X射线照相装置中的一系列二维掩模的三维数字掩模的导出程序,记录装置和感兴趣的体积, 位于源(S)和记录装置之间的射线包括每个掩模M&的外插; 2包括确定超出记录装置限制的最后段lfin; 并且对于包括在角度范围&角度中的任何角度γ,生成与源的位置Sγ相关联的二维掩模Mγ; 2至& thetas; 1(接近于&thetas; 2的位置)。 对于位于段d(或d')和段lfin之间的每个并行段1,该过程还包括在平面P1和坐标2与所关心的体积的交点处导出每个体素的对象的三维掩模; 并将三维掩模投射到片段1上。
    • 28. 发明申请
    • MEDICAL IMAGING PROCESS FOR TRIPLE-ENERGY MODELING, AND DEVICE FOR IMPLEMENTING SUCH A PROCESS
    • 用于三重能量建模的医学成像过程,以及用于实现这一过程的设备
    • US20110019891A1
    • 2011-01-27
    • US12839436
    • 2010-07-20
    • Sylvie PuongSerge MullerRazvan IordacheXavíer Bouchevreau
    • Sylvie PuongSerge MullerRazvan IordacheXavíer Bouchevreau
    • G06K9/00
    • A61B6/482A61B6/405A61B6/502A61B6/542
    • A method for X-ray imaging of a body using an imaging device comprising an image sensor and an X-ray emitter which operates at different emission spectra, wherein the method includes: acquiring a first image resulting from the passage through the body of X-rays emitted by the X-ray emitter with a first emission spectrum; calculating characteristics of the body on the basis of the first image, and calculating a second and a third emission spectrum based on the characteristics of the body, wherein the first, second and third emission spectra are distinct from one another; acquiring a second and third image resulting from the passage through the body of X-rays emitted by the X-ray emitter with the second and third emission spectrum respectively; and modeling the body by generating thickness charts for different materials comprising the body on the basis of the three images.
    • 一种用于使用包括图像传感器和在不同发射光谱下操作的X射线发射器的成像装置对人体进行X射线成像的方法,其中所述方法包括:获取由穿过X射线体的通道产生的第一图像, 由X射线发射器发射的具有第一发射光谱的射线; 基于第一图像计算身体的特征,以及基于身体的特性计算第二和第三发射光谱,其中第一,第二和第三发射光谱彼此不同; 获取由分别具有第二和第三发射光谱的由X射线发射器发射的X射线体穿过的第二和第三图像; 并通过基于三个图像生成包括身体的不同材料的厚度图来对身体进行建模。