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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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2.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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3.发明申请公开(公告)号：US20080240536A1
公开(公告)日：2008-10-02
申请号：US12054989
申请日：2008-03-25
IPC分类号： G06K9/00
CPC分类号： A61B6/12 , A61B5/7289 , A61B6/032 , A61B6/503 , A61B6/5217 , A61B6/5235 , A61B6/541 , A61B8/5238 , G01R33/48 , G01R33/4812 , G01R33/56509 , G01R33/5673
摘要： A method of detection and compensation for respiratory motion improves the registration between a 3D pre-operation image and X-ray images acquired during a cardiac intervention. By synchronizing the X-ray images with the electrocardiogram, the disclosed method thus eliminates the motion related to the heart cycle from these images, thus isolating the contribution of the respiratory motion. From this point, an algorithm is proposed capable of attributing the motion remaining in the radiography images to respiration. The algorithm also enables this motion to be detected and compensated for in order to obtain a registration between 3D cardiac images and radiography images.
摘要翻译： 呼吸运动的检测和补偿方法改善了3D预处理图像与在心脏干预期间获取的X射线图像之间的配准。 通过使X射线图像与心电图同步，所公开的方法从而消除了与这些图像相关的心脏周期运动，从而隔离了呼吸运动的贡献。 从这一点上，提出了一种能够将放射摄影图像中剩余的运动归因于呼吸的算法。 该算法还使得能够检测和补偿该运动，以便获得3D心脏图像和放射摄影图像之间的配准。
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4.发明申请公开(公告)号：US20110019878A1
公开(公告)日：2011-01-27
申请号：US12508070
申请日：2009-07-23
申请人： Elisabeth Soubelet , Jean Lienard , Regis Vaillant
发明人： Elisabeth Soubelet , Jean Lienard , Regis Vaillant
CPC分类号： A61B6/466 , A61B5/7285 , A61B6/503 , A61B6/5247 , A61B6/5264 , A61B6/5288 , A61B6/541 , A61B8/5276 , A61B8/543 , A61B2017/00699 , A61B2034/2065 , G06T7/246 , G06T2207/30048
摘要： A system and method to compensate for respiratory motion in imaging of instruments introduced into the subject anatomy is provided. The system can include an imaging system in communication with a controller. The controller can include a memory with program instructions for execution by the processor to perform the steps of: detecting an illustration of at least a portion of the plurality of instruments introduced into the subject anatomy in a first image and a second image, comparing and calculating a displacement of the plurality of instruments between the first and second images, calculating one of an average or median displacement of the plurality of instruments between the first and second images, and applying one of the average and the median displacement to adjust at least a portion of the first or second images or a pre-acquired three-dimensional model of the internal region of
摘要翻译： 提供了一种用于补偿引入到主题解剖结构中的仪器的成像中的呼吸运动的系统和方法。 该系统可以包括与控制器通信的成像系统。 控制器可以包括具有程序指令的存储器，用于由处理器执行以执行以下步骤：检测在第一图像和第二图像中引入到主题解剖结构中的多个乐器的至少一部分的图示，比较和计算 在所述第一和第二图像之间移动所述多个乐器，计算所述第一和第二图像之间的所述多个乐器的平均或中间位移之一，并且应用所述平均和所述中间位移之一来调整至少一部分 的第一或第二图像或内部区域的预先获取的三维模型
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5.发明授权Method of detection and compensation for respiratory motion in radiography cardiac images synchronized with an electrocardiogram signal 有权与心电图信号同步的放射照相心脏图像中呼吸运动的检测和补偿方法公开(公告)号：US08233688B2
公开(公告)日：2012-07-31
申请号：US12054989
申请日：2008-03-25
CPC分类号： A61B6/12 , A61B5/7289 , A61B6/032 , A61B6/503 , A61B6/5217 , A61B6/5235 , A61B6/541 , A61B8/5238 , G01R33/48 , G01R33/4812 , G01R33/56509 , G01R33/5673
摘要： A method of detection and compensation for respiratory motion improves the registration between a 3D pre-operation image and X-ray images acquired during a cardiac intervention. By synchronizing the X-ray images with the electrocardiogram, the disclosed method thus eliminates the motion related to the heart cycle from these images, thus isolating the contribution of the respiratory motion. From this point, an algorithm is proposed capable of attributing the motion remaining in the radiography images to respiration. The algorithm also enables this motion to be detected and compensated for in order to obtain a registration between 3D cardiac images and radiography images.
摘要翻译： 呼吸运动的检测和补偿方法改善了3D预处理图像与在心脏干预期间获取的X射线图像之间的配准。 通过使X射线图像与心电图同步，所公开的方法从而消除了与这些图像相关的心脏周期运动，从而隔离了呼吸运动的贡献。 从这一点上，提出了一种能够将放射摄影图像中剩余的运动归因于呼吸的算法。 该算法还使得能够检测和补偿该运动，以便获得3D心脏图像和放射摄影图像之间的配准。
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6.发明授权公开(公告)号：US08718338B2
公开(公告)日：2014-05-06
申请号：US12508070
申请日：2009-07-23
申请人： Elisabeth Soubelet , Jean Lienard , Regis Vaillant
发明人： Elisabeth Soubelet , Jean Lienard , Regis Vaillant
CPC分类号： A61B6/466 , A61B5/7285 , A61B6/503 , A61B6/5247 , A61B6/5264 , A61B6/5288 , A61B6/541 , A61B8/5276 , A61B8/543 , A61B2017/00699 , A61B2034/2065 , G06T7/246 , G06T2207/30048
摘要： A system and method to compensate for respiratory motion in imaging of instruments introduced into the subject anatomy is provided. The system can include an imaging system in communication with a controller. The controller can include a memory with program instructions for execution by the processor to perform the steps of: detecting an illustration of at least a portion of the plurality of instruments introduced into the subject anatomy in a first image and a second image, comparing and calculating a displacement of the plurality of instruments between the first and second images, calculating one of an average or median displacement of the plurality of instruments between the first and second images, and applying one of the average and the median displacement to adjust at least a portion of the first or second images or a pre-acquired three-dimensional model of the internal region of interest.
摘要翻译： 提供了一种用于补偿引入到主题解剖结构中的仪器的成像中的呼吸运动的系统和方法。 该系统可以包括与控制器通信的成像系统。 控制器可以包括具有程序指令的存储器，用于由处理器执行以执行以下步骤：检测在第一图像和第二图像中引入到主题解剖结构中的多个乐器的至少一部分的图示，比较和计算 在所述第一和第二图像之间移动所述多个乐器，计算所述第一和第二图像之间的所述多个乐器的平均或中间位移之一，并且应用所述平均和所述中间位移之一来调整至少一部分 的第一或第二图像或所感兴趣的内部区域的预先获取的三维模型。
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公开(公告)号：US06633661B2
公开(公告)日：2003-10-14
申请号：US09447883
申请日：1999-11-23
IPC分类号： G06K900
CPC分类号： G06T5/009 , G06T5/40 , G06T2207/10116
摘要： A method of compensation for the thickness of an organ in an X-ray machine of the type comprising an X-ray source and a detector of the beam of X-rays after it has passed through the organ, the detector being capable of converting the X-ray beam into a digital electronic signal, in which, from a digitized image, an image of the radiologic thicknesses of an organ traversed by the X-ray beam is calculated, a thickness threshold is defined, from this there is derived an algebraic compensation image to bring the pixels of a level below or above the threshold back to the value of the threshold, and the thickness image and a proportion of the compensation image are summed up, to obtain a compensated thickness image.
摘要翻译： 一种X射线机的X射线机器的器官的厚度的补偿方法，其特征在于，X射线源X射线源和X射线束的检测器通过该器官后，能够将 将X射线束转换为数字电子信号，其中从数字化图像计算由X射线束穿过的器官的放射学厚度的图像，定义厚度阈值，由此导出代数 补偿图像将阈值以下的像素恢复到阈值的值，并且将厚度图像和补偿图像的比例相加，以获得补偿的厚度图像。
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公开(公告)号：US20090136112A1
公开(公告)日：2009-05-28
申请号：US12267632
申请日：2008-11-10
申请人： Vincent BISMUTH , Vincent Auvray , Regis Vaillant , Jean Lienard
发明人： Vincent BISMUTH , Vincent Auvray , Regis Vaillant , Jean Lienard
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T2207/10116 , G06T2207/20064 , G06T2207/20182 , G06T2207/20221
摘要： A method for the processing of images in interventional radioscopy to produce a sequence of de-noised images in which elongated objects of guiding instrumentation equipment are preserved and enhanced. The method of the invention uses a tool for indicating the confidence to be placed in a given pixel as regards its belonging to a piece of guidance equipment. This tool is used to create a combination algorithm capable of re-injecting the pixels having a low contrast-to-noise ratio into the de-noised image. This combination algorithm enables the enhancement solely of the pixels of the guidance equipment with a high confidence value so as not to produce artifacts with the enhancement of false positives.
摘要翻译： 一种用于在介入式放射检查中处理图像以产生一系列去噪图像的方法，其中保存和增强了引导仪器设备的细长物体。 本发明的方法使用工具来表示将其置于给定像素中的置信度，就其属于一块引导设备而言。 该工具用于创建能够将具有低对比度噪声比的像素重新注入到去噪图像中的组合算法。 该组合算法使得能够仅利用高置信度的引导设备的像素进行增强，从而不会随着误报的增强而产生伪像。
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公开(公告)号：US20070058880A1
公开(公告)日：2007-03-15
申请号：US11401043
申请日：2006-04-10
申请人： Jean Lienard , Vincent Auvray , Regis Vaillant
发明人： Jean Lienard , Vincent Auvray , Regis Vaillant
CPC分类号： G06T5/002 , G06T5/50 , G06T7/223 , G06T2207/10121 , G06T2207/20221 , G06T2207/30004
摘要： A process and system for improving a digital image of an object defined by pixels, acquired at the instant t and generated from an X-ray detector receiving X-rays emitted by a source. The process includes: determining a predicted image of the object at the instant t as a function of the images of the object acquired at the instants t-i, i being a positive whole number greater than or equal to 1, and moving of each of the layers constituting the image acquired at the instant t, the number of layers being previously fixed and the moving of each of the layers being previously determined; and generating a visualized image corresponding to a weighted sum of the predicted image and the image of the object acquired at the instant t, so as to attenuate the noise of the image of the object acquired at the instant t.
摘要翻译： 一种用于改善由时刻t获取并由接收由源发射的X射线的X射线检测器产生的由像素定义的对象的数字图像的处理和系统。 该过程包括：根据在时刻ti获取的对象的图像，确定在时刻t的对象的预测图像，i是大于或等于1的正整数，并且每个层的移动 构成在时刻t获取的图像，预先固定的层数，并且预先确定每个层的移动; 并产生对应于在时刻t获取的预测图像和对象图像的加权和的可视化图像，以便衰减在时刻t获取的对象的图像的噪声。
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公开(公告)号：US07079620B2
公开(公告)日：2006-07-18
申请号：US10099698
申请日：2002-03-13
申请人： Regis Vaillant , Franciso Sureda , Jean Lienard
发明人： Regis Vaillant , Franciso Sureda , Jean Lienard
CPC分类号： A61B6/504 , A61B5/1075 , A61B6/588 , A61B6/589
摘要： A method and apparatus for determining a magnification factor in a radiography device of the type comprising an X-ray source and means for acquiring images placed facing the source, the source and the means for acquiring images being mounted so as to rotate about at least one axis with respect to a support on which an object to be X-rayed is intended to be positioned. The method and the apparatus implementing the method comprises: acquiring at least two images corresponding to two different angular positions of the source and of the recording means with respect to the support; identifying on these images projections of at least one point of the X-rayed object; and determining the magnification factor of at least one of the images, first, as a function of the angular displacement of the source and of the recording means between the acquisitions of the images in question and, secondly, as a function of the positions on these images of the identified projections.
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