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1.发明授权Method for locating an element of interest contained in a three-dimensional object, in particular during a stereotactic investigation in the X-ray examination of the breast 失效用于定位包含在三维物体中的感兴趣元素的方法，特别是在乳房X线检查中的立体定向调查期间公开(公告)号：US07035450B1
公开(公告)日：2006-04-25
申请号：US09214822
申请日：1999-01-11
IPC分类号： G06K9/00
CPC分类号： G06K9/3233 , G06K2209/053 , G06T7/32 , G06T7/593 , G06T2207/30068
摘要： The stereotaxic images being digitized, a target pixel in a target region of interest is selected, a target window of chosen dimensional characteristics and containing the said target region of interest is generated around the selected target pixel, a set of pixels is determined in a second image, according to a predetermined selection criterion, a second window, of the same dimensional characteristics as the said target window, is generated around each selected pixel, a correlation processing between the grey-scale levels of the pixels of each second window and the grey-scale levels of the pixels of the target window is carried out so as to obtain a correlation value for each second window, and the region of interest homologous to the target region of interest is identified on the basis of the analysis of the set of correlation values thus obtained, so as to minimize the risks of matching error between the homologous regions of interest. The element of interest is then located on the basis of the positions of the two homologous regions.
摘要翻译： 数字化的立体定位图像，目标感兴趣区域中的目标像素被选择，选择的维度特征的目标窗口并且包含所述目标感兴趣区域的周围围绕所选择的目标像素生成，在一秒钟内确定一组像素 根据预定的选择标准，在每个所选择的像素周围生成与所述目标窗口相同的尺寸特性的第二窗口，每个第二窗口的像素的灰度级与灰度之间的相关处理 执行目标窗口的像素的级别以便获得每个第二窗口的相关值，并且基于相关集合的分析来识别与目标感兴趣区域同源的兴趣区域 从而最小化感兴趣的同源区域之间匹配误差的风险。 感兴趣的元素然后基于两个同源区域的位置。
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2.发明授权Procedure for automatic position-finding of points of interest during a mammography examination using stereotactic technique 失效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
公开(公告)号：US5544219A
公开(公告)日：1996-08-06
申请号：US332743
申请日：1994-11-01
申请人： Serge Muller , Michel Grimaud , Robert Heidsieck
发明人： Serge Muller , Michel Grimaud , Robert Heidsieck
CPC分类号： G06T5/30 , A61B90/10 , G06T7/0042 , G06T2207/10012 , G06T2207/30068 , H04N2013/0074
摘要： 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.
摘要翻译： 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。
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3.发明授权Method of automatic determination of the contrast and brightness of a digital radiographic image 失效自动确定数字放射照相图像的对比度和亮度的方法公开(公告)号：US06718056B1
公开(公告)日：2004-04-06
申请号：US09450489
申请日：1999-11-29
申请人： Sylvie Bothorel , Serge Muller , Jean Lienard , Andreas Rick , François Nicolas
发明人： Sylvie Bothorel , Serge Muller , Jean Lienard , Andreas Rick , François Nicolas
IPC分类号： G06K900
CPC分类号： G06T7/0002 , G06T5/009 , G06T5/40 , G06T2207/10116 , G06T2207/30068 , G06T2207/30168 , H04N1/4074
摘要： The method comprises a histogram of the radiographed image, i.e., a real histogram, a mathematical model of the image chain and the object obtained by calibration. The mathematical model of the image chain and the object and a set of parameters of acquisition, of the detector, of the positioner and of the object are used to determine two values of gray level, gray min and gray max, delimiting a useful zone and the part below gray min and the part above gray max are suppressed in the real histogram, i.e., a limited histogram. A set of rules is applied to the limited histogram in order to determine the level of brightness (WL) and the contrast (WW) is obtained from the brightness and possibly from one or more parameters selected by the user or fixed a priori.
摘要翻译： 该方法包括射线照相图像的直方图，即真实直方图，图像链的数学模型和通过校准获得的对象。 图像链和对象的数学模型以及采集，定位器和对象的检测参数的一组参数用于确定灰度级，灰度最小值和灰度最大值两个值，定义有用区域， 灰色最小值以下的部分和灰度最大值部分在实际直方图中被抑制，即有限的直方图。 将一组规则应用于有限直方图，以便确定亮度水平（WL），并且可以从亮度获得对比度（WW），并且可能从用户选择的一个或多个参数获得或先验固定。
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公开(公告)号：US5539797A
公开(公告)日：1996-07-23
申请号：US218931
申请日：1994-03-29
摘要： A mammograph is disclosed which includes: a positioning device defining a rotation axis, the positioning device including: an arm .beta..sub.2 ; breast support plate connected to the arm .beta..sub.2 ; a movement device connected to the arm .beta..sub.2 ; and a digital detector connected to the movement device, the digital detector having a detection surface defining a plane .pi.; an arm .beta..sub.1 pivotally connected to the positioning device for pivotally rotating said arm .beta..sub.1 around said rotation axis, the arm .beta..sub.1 having an end; and an X-ray tube movably attached to the end of the arm .beta..sub.1, the X-ray tube defining a beam axis .delta. and being pivotable about the rotation axis so as to move in a first direction that is orthogonal with the rotation axis and direct an X-ray beam, emitted by the X-ray tube, along the beam axis .delta.. Pivoting the X-ray tube within an angle .+-..alpha. causes the movement device to move the digital detector laterally within the plane .pi. along a second direction that is perpendicular to the rotation axis and opposite the first direction so as to accommodate a position of the X-ray tube within the angle .+-..alpha. and define a volume of a breast stereotaxically accessible by the X-ray beam as a polyhedron having a first surface and a second surface, the first surface and the second surface meeting and being defined by an intersection of the beam axis .delta. at an angle .+-..alpha. with the beam axis .delta. at an angle -.alpha., the X-ray beam being entirely incident the digital detector as the movement device moves the digital detector to accommodate pivotal movement of the X-ray tube.
摘要翻译： 公开了一种乳房X线照相机，其包括：定义旋转轴的定位装置，所述定位装置包括：臂β2; 乳房支撑板连接到手臂β2; 连接到臂β2的运动装置; 和连接到移动装置的数字检测器，数字检测器具有限定平面pi的检测表面; 臂β1枢转地连接到定位装置，用于围绕所述旋转轴线枢转旋转所述臂β1，所述臂β1具有端部; 以及可移动地附接到臂β1的端部的X射线管，X射线管限定射束轴三角形并且可围绕旋转轴线枢转，以沿与旋转轴线正交的第一方向移动;以及 沿着光束轴三角形引导由X射线管发射的X射线束。 将X射线管以+/-角度旋转，使得移动装置沿着垂直于旋转轴线并与第一方向相反的第二方向在平面pi内横向移动数字检测器，以便容纳位置 所述X射线管在角度+/-α内并且限定由X射线束立体定位可触及的具有第一表面和第二表面的多面体的乳房的体积，所述第一表面和第二表面会聚并被限定 通过光束轴δ与角度α-α与光束轴δ的角度的交叉点，X射线束完全入射到数字检测器，随着移动装置移动数字检测器以适应枢轴运动 X光管。
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公开(公告)号：US09468411B2
公开(公告)日：2016-10-18
申请号：US14241916
申请日：2012-08-28
CPC分类号： A61B6/0457 , A61B6/025 , A61B6/0414 , A61B6/502
摘要： A mammography or tomosynthesis apparatus, comprising a mechanism configured to move a paddle, relative to a detector platform fixed to a main body of the apparatus, to compress a patient's breast against the detector platform to form a surface. The mechanism comprises a post that is mobile relative to the detector platform and/or to the body and configured so that maximum extension of the post relative to the surface follows the movements of the paddle relative to the detector platform.
摘要翻译： 一种乳房摄影术或层析融合装置，包括被配置为相对于固定到所述装置的主体的检测器平台移动桨叶的机构，以将患者的乳房压靠在所述检测器平台上以形成表面。 该机构包括相对于检测器平台和/或主体移动的柱，并且被配置为使得柱相对于表面的最大延伸跟随桨相对于检测器平台的移动。
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公开(公告)号：US08958527B2
公开(公告)日：2015-02-17
申请号：US13397211
申请日：2012-02-15
摘要： An imaging method performed by a device comprising an X-ray emitting source, a receiver positioned facing the source, and a support on which a subject or organ to be imaged is positioned, the method comprises defining a first set of orientations of the source and a second set of orientations of the source, and acquiring images at the defined orientations of the source, wherein if the first set of orientations comprises an orientation that the second set of orientations does not comprise, only one image is acquired at the orientation, and if both the first set of orientations and the second set of orientations comprise the same orientation, at least two images are acquired at distinct acquisition parameters at the orientation.
摘要翻译： 一种由包括X射线发射源，面向源极的接收器以及待成像对象或器官定位在其上的支撑件的装置执行的成像方法，所述方法包括限定所述源的第一组取向和 源的取向的第二集合，并且在所述源的所定义的取向处获取图像，其中如果所述第一组取向包括所述第二组取向不包括的取向，则在所述取向处仅获取一个图像，以及 如果第一组取向和第二组取向都包括相同的取向，则在取向处以不同的采集参数获取至少两个图像。
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7.发明授权公开(公告)号：US07548640B2
公开(公告)日：2009-06-16
申请号：US12115596
申请日：2008-05-06
申请人： Fanny Jeunehomme , Serge Muller , Razvan Iordache
发明人： Fanny Jeunehomme , Serge Muller , Razvan Iordache
IPC分类号： G06K9/00
CPC分类号： G06T5/50 , A61B6/583 , G06T2207/10116 , G06T2207/30004 , H04N5/32
摘要： A method and apparatus for calibrating an apparatus that acquires a sequence of radiographic images and correcting images of an object under observation. For each image of a sequence acquired by the apparatus and for a given frequency of acquisition of the sequence, the apparatus is calibrated by determining the value of the variation of a mean of gray levels in at least one zone of interest of the current image of at least one calibration device, the variation being determined relative to the mean gray level of the first image of the sequence in each zone of interest. The determination of the variation is reiterated for a series of images sequences acquired using calibration devices resulting in first images of mean gray levels different from one sequence to another. Each image of an image sequence of the object under observation is corrected, comprising zones of observation having different gray levels by subtracting from the current image the variation of one gray level relative to the first image of the object, the subtraction being a function of the gray level considered from each zone of observation.
摘要翻译： 一种用于校准获取放射线图像序列并校正被观察物体的图像的装置的方法和装置。 对于由装置获取的序列和给定的序列获取频率的每个图像，通过确定当前图像的当前图像的至少一个感兴趣区域中的灰度级的平均值的变化值来校准装置 至少一个校准装置，相对于感兴趣区域中序列的第一图像的平均灰度级确定变化。 对于使用校准装置获得的一系列图像序列，重复了变化的确定，导致不同于一个序列到另一个序列的平均灰度级的第一图像。 通过从当前图像中减去相对于对象的第一图像的一个灰度级的变化，校正观察对象的图像序列的每个图像，包括具有不同灰度级的观察区域，该减法是 从每个观察区考虑灰度。
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8.发明授权Method for detection of elements of interest in a digital radiographic image 失效用于检测数字放射照相图像中感兴趣的元件的方法公开(公告)号：US06542628B1
公开(公告)日：2003-04-01
申请号：US09517349
申请日：2000-03-02
申请人： Serge Muller , Andreas Rick
发明人： Serge Muller , Andreas Rick
IPC分类号： G06K900
CPC分类号： G06T7/0012 , G06T2207/10116 , G06T2207/30068
摘要： Method of improved detection of elements of interest by means of a detection system in a digital radiographic image of an object, acquired on an acquisition chain, comprising a first calibration phase in which the performances of the detection system are established. For such purpose, a calibration curve with several dimensions is determined by means of a mathematical model of the acquisition chain and object, in order to express a false positive probability as a function of a set of parameters corresponding to the acquisition chain and object. In the course of a second phase of use, a false positive probability value is determined for each pixel of the image. One then selects among the pixels of the digital radiographic image acquired those whose probability value obtained satisfies a predetermined criterion.
摘要翻译： 通过在采集链上获取的对象的数字放射线照相图像中的检测系统来检测感兴趣元件的方法，包括建立检测系统的性能的第一校准阶段。 为此目的，通过采集链和物体的数学模型来确定具有若干维度的校准曲线，以便表示作为与采集链和对象相对应的一组参数的函数的假正概率。 在第二阶段使用过程中，为图像的每个像素确定假阳性概率值。 然后，在获得满足预定标准的概率值的数字放射线照相图像的像素中进行选择。
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公开(公告)号：US06415015B2
公开(公告)日：2002-07-02
申请号：US09745886
申请日：2000-12-21
IPC分类号： G01N2304
CPC分类号： G06T5/009 , G06T5/40 , G06T2207/10116 , G06T2207/30068
摘要： Method and system for compensating for the thickness of an organ in a radiology instrument, in which an image of the radiological thicknesses of the organ through which the X-ray beam has passed is calculated on the basis of a digitized image, the thickness image is filtered using a low-pass filter in order to obtain a low-frequency image, the low-frequency image is subtracted from the radiological thickness image in order to obtain a contrast image, the low-frequency image is processed using a pre-recorded table taking into account a contract &khgr; selected by a user in order to obtain an image with reduced dynamic range, and the image with reduced dynamic range is added to the contrast image in order to obtain a compensated thickness image, the pixels having a level below or above a predetermined threshold being returned at least to the value of the threshold, while preserving the differences and real ratios between the anatomical structures.
摘要翻译： 根据数字化图像计算放射学仪器中的器官的厚度的方法和系统，其中根据数字化图像计算穿过X射线束的器官的放射学厚度的图像，厚度图像是 使用低通滤波器进行滤波以获得低频图像，从放射学厚度图像中减去低频图像以获得对比度图像，使用预先记录的表处理低频图像 考虑到一个合同＆khgr; 由用户选择以获得具有减小的动态范围的图像，并且将具有减小的动态范围的图像添加到对比度图像中，以获得补偿的厚度图像，返回低于或高于预定阈值的像素的像素返回 至少达到阈值的值，同时保留解剖结构之间的差异和实际比例。
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公开(公告)号：US06414416B1
公开(公告)日：2002-07-02
申请号：US09912377
申请日：2001-07-26
IPC分类号： H01L4108
CPC分类号： G01C19/5607
摘要： A vibrating rate gyro structure machined in a plate of material and comprising a fixed part, a resonator, and a mechanical system connecting the resonator to the fixed part. The mechanical system comprises a first mobile mass part connected to one end of the resonator, a second mobile mass part (4) connected to the resonator and situated in the vicinity of the other end of the resonator, two flexible arms situated on both sides of the resonator and each connecting the first mobile mass part to the second mobile mass part, and two other flexible arms situated on both sides of the resonator and connecting the second mobile mass part to the fixed part.
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