专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06549606B1 Method of reconstruction of a section of an element of interest 失效
标题翻译：重建感兴趣的元素的一部分的方法
公开(公告)号：US06549606B1
公开(公告)日：2003-04-15
申请号：US09666999
申请日：2000-09-21
申请人： Régis Vaillant , Francisco Sureda , Jean Lienard , Laurent Launay
发明人： Régis Vaillant , Francisco Sureda , Jean Lienard , Laurent Launay
IPC分类号： A61B603
CPC分类号： G06T11/005 , G06T2211/404 , Y10S378/901
摘要： Several acquisitions of digital radiographic images of an element of interest are made, by using a moving camera rotating around the element of interest in a plane parallel to the plane of a section, a matching stage is carried out in which projected elements are located in all the acquired images, corresponding respectively to the projections of the element of interest in those acquired images. The width of each projected element is determined and the section of the element of interest is reconstructed from the different widths determined.
摘要翻译：通过使用在平行于部分的平面的平面中围绕感兴趣的元件旋转的移动相机来进行对感兴趣的元件的数字放射照相图像的几次采集，执行匹配阶段，其中投影元素位于所有所获取的图像分别对应于那些获取的图像中的感兴趣元素的投影。确定每个投影元素的宽度，并从所确定的不同宽度重建感兴趣元素的部分。

2. 发明授权

US06385285B1 Method of reconstruction of a three-dimensional image of an element of interest 有权
标题翻译：重建感兴趣元素的三维图像的方法
公开(公告)号：US06385285B1
公开(公告)日：2002-05-07
申请号：US09667210
申请日：2000-09-21
申请人： Régis Vaillant , Laurent Launay , Jean Lienard , Francisco Sureda
发明人： Régis Vaillant , Laurent Launay , Jean Lienard , Francisco Sureda
IPC分类号： A61B603
CPC分类号： G06T11/006 , G06T2211/424
摘要： Method of reconstruction of a three-dimensional image of an element of interest comprises a phase of acquisition of digital radiographic images by rotation of an camera around the organ, a phase of marking the position of the element of interest from image to image, and a phase of reconstruction of the three-dimensional image of the element of interest from acquired images and positions of the element of interest successively located in the successive images.
摘要翻译：重建感兴趣元件的三维图像的方法包括通过相机围绕器官的旋转来获取数字放射照相图像的阶段，将图像元素的位置标记到图像的相位，以及从所获取的图像中重建感兴趣元素的三维图像和依次位于连续图像中的感兴趣元素的位置的相位。

3. 发明授权

US06643392B1 Process for reconstructing a tridimensional image of a moving object 有权
标题翻译：用于重建移动物体的立体图像的过程
公开(公告)号：US06643392B1
公开(公告)日：2003-11-04
申请号：US09667067
申请日：2000-09-21
申请人： Régis Vaillant , Yves Trousset , Jean Lienard , Francisco Sureda
发明人： Régis Vaillant , Yves Trousset , Jean Lienard , Francisco Sureda
IPC分类号： G06K900
CPC分类号： G06T11/005 , G06T11/006 , G06T2211/404 , G06T2211/412 , G06T2211/424
摘要： A process for reconstructing a tridimensional image of an object moving with a substantially cyclic motion, for example the vessels of the human heart, in which, for an acquisition duration extending over several cycles of the movement of the object, an acquisitio of a plurality of initial digital radiographic images is performed using a snapshot apparatus rotating around the object. Initial images having the same temporal occurrence in the course of each cycle are selected respectively in successive cycles so as to form a group of images which is associated with this same temporal occurrence. Several different groups of initial images corresponding respectively to several different temporal occurrences are formed. An intermediate tridimensional representation of the object is reconstructed on the basis of each group of initial images and of an iterative image reconstruction algorithm. A law of spatial deformation between two intermediate tridimensional representations is formulated on the basis of the two intermediate tridimensional representations corresponding to two successive temporal occurrences, and a final tridimensional representation of the object is reconstructed on the basis of the initial images successively acquired, of the spatial deformation laws successively formulated and of an iterative image reconstruction algorithm.
摘要翻译：一种用于重建以基本循环运动（例如人类心脏的血管）移动的物体的三维图像的过程，其中，对于在物体的运动的几个周期延伸的获取持续时间，获取多个使用绕物体旋转的快照设备执行初始数字放射照相图像。分别在连续循环中选择在每个周期的过程中具有相同时间出现的初始图像，以形成与该相同时间出现相关联的一组图像。形成了分别对应于几个不同时间事件的几组不同的初始图像。在每组初始图像和迭代图像重建算法的基础上重建对象的中间三维表示。基于对应于两个连续时间出现的两个中间三维表示来形成两个中间三维表示之间的空间变形规律，并且基于连续获取的初始图像重建对象的最终三维表示相继制定的空间变形规律和迭代图像重建算法。

4. 发明授权

US07065395B2 Method and apparatus for cardiac radiological examination in coronary angiography 失效
标题翻译：冠状动脉造影中心脏放射检查的方法和装置
公开(公告)号：US07065395B2
公开(公告)日：2006-06-20
申请号：US10295055
申请日：2002-11-04
申请人： Jean Lienard , Regis Vaillant , Francisco Sureda , Laurent Launay
发明人： Jean Lienard , Regis Vaillant , Francisco Sureda , Laurent Launay
IPC分类号： A61B6/00
CPC分类号： A61B6/541 , A61B6/481 , A61B6/504
摘要： A method of cardiac radiological examination for coronarography comprises the steps of: a) introducing contrast medium simultaneously in the left coronary artery and in the right coronary artery from the aortic root and, in parallel, b) acquiring a sequence of dynamic images of the propagation of the contrast medium in the left and right coronary arteries with a displacement of the image plane, during the acquisition of said images, along a determined trajectory (E28). The contrast medium can be introduced in a cyclic manner during the acquisition of dynamic images, each cycle of introduction corresponding to a phase of closure of the aortic valve in the cardiac rhythm. 3D and 4D images with optimal efficiency can be obtained in the use of contrast medium. An injection device for producing the above cycles is synchronized with the introduction of the contrast medium.
摘要翻译：冠状动脉造影的心脏放射检查方法包括以下步骤：a）在主动脉根部的左冠状动脉和右冠状动脉中同时引入造影剂，并行并行地获得传播的动态图像序列沿着确定的轨迹（E28），在获取所述图像期间具有图像平面位移的左冠状动脉和右冠状动脉中的造影剂。可以在获取动态图像期间以循环方式引入造影剂，每个引入周期对应于主动脉瓣在心律中的闭合阶段。在使用造影剂时可以获得具有最佳效率的3D和4D图像。用于产生上述循环的注射装置与造影剂的引入同步。

5. 发明授权

US08160318B2 Method for processing images in interventional radioscopy to detect guiding instrumentation equipment 有权
标题翻译：介入放射检查图像处理方法，用于检测引导仪器设备
公开(公告)号：US08160318B2
公开(公告)日：2012-04-17
申请号：US12139579
申请日：2008-06-16
申请人： Vincent Bismuth , Vincent Auvray , Jean Lienard , Régis Vaillant
发明人： Vincent Bismuth , Vincent Auvray , Jean Lienard , Régis Vaillant
IPC分类号： G06K9/00
CPC分类号： G06T5/20 , G06K9/4609 , G06K2209/057
摘要： A method for processing images in interventional radioscopy for detecting guiding instrumentation equipment. The method of the invention enables objects of longilinear or very curved shapes to be detected within the radioscopic image having very low contrast to noise ratios. In one embodiment, an algorithm enables the measured contrast to noise ratio of long or curved structures in the image to be considerably improved. To do this, an embodiment of the invention uses oriented, separable, recursive and rapid steerable detection filters. Said detection filters have a low calculation cost, even for long filters having several orientations.
摘要翻译：用于检测导向仪器设备的介入式放射检查图像处理方法。本发明的方法能够在具有非常低的对比度噪声比的放射线图像内检测到具有长线形或非常弯曲形状的物体。在一个实施例中，算法使得能够显着改善图像中的长或弯曲结构的测量对比度与噪声比。为此，本发明的实施例使用定向的，可分离的，递归的和快速的可操纵的检测滤波器。所述检测滤波器具有低的计算成本，即使对于具有多个取向的长滤波器也是如此。

6. 发明申请

US20070036405A1 Method and apparatus for correction of an image 有权
标题翻译：用于校正图像的方法和装置
公开(公告)号：US20070036405A1
公开(公告)日：2007-02-15
申请号：US11434839
申请日：2006-05-16
申请人： Jean Lienard , Francisco Sureda
发明人： Jean Lienard , Francisco Sureda
IPC分类号： G01N23/04 , G06K9/00
CPC分类号： G06T5/50 , G06T2207/30101
摘要： A method and apparatus for automatically estimating a correction to be made to an image deformed with respect to a sequence of images. The method includes detecting of information pixels in the images; calculation of a region of interest located in a binary mapping image made from the images; for each image, search in the image, for the position of a mobile region that maximizes a similarity criterion to the region; and the estimated correction to be made to the image is compared with each image being the affine transformation of the mobile region moving from its found position at which similarity criterion is maximized to the region. The correction is only applied if the balance is equal to the improvement to the similarity criterion in the region of interest and the deterioration of the similarity criterion outside the region of interest is positive.
摘要翻译：一种用于自动估计针对图像序列变形的图像的校正的方法和装置。该方法包括检测图像中的信息像素; 计算位于由图像制成的二进制映射图像中的感兴趣区域; 对于每个图像，在图像中搜索针对该区域最大化相似性标准的移动区域的位置; 并将对图像进行的估计校正与作为从相似性标准最大化的发现位置移动到该区域的移动区域的仿射变换的每个图像进行比较。仅在平衡与感兴趣区域中的相似性标准的改善相等并且感兴趣区域外的相似性标准的恶化为正的情况下才适用。

7. 发明授权

US08094897B2 Method for the processing of images in interventional radioscopy 有权
标题翻译：介入放射检查图像处理方法
公开(公告)号：US08094897B2
公开(公告)日：2012-01-10
申请号：US12267632
申请日：2008-11-10
申请人： Vincent Bismuth , Vincent Auvray , Régis Vaillant , Jean Lienard
发明人： Vincent Bismuth , Vincent Auvray , Régis Vaillant , Jean Lienard
IPC分类号： G06K9/00
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。

8. 发明授权

US08121192B2 Method and system for treating noise in a generated image 有权
标题翻译：用于处理所生成图像中的噪声的方法和系统
公开(公告)号：US08121192B2
公开(公告)日：2012-02-21
申请号：US11401043
申请日：2006-04-10
申请人： Jean Lienard , Vincent Auvray , Régis Vaillant
发明人： Jean Lienard , Vincent Auvray , Régis Vaillant
IPC分类号： H04N7/12
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t-i，i为大于或等于1的正整数获得的对象的图像的函数，确定在时刻t的对象的预测图像，以及每个构成在时刻t获取的图像的层，先前固定的层的数量和预先确定的每个层的移动; 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。

9. 发明授权

US06976785B2 Method and device for calibrating a radiological image 失效
标题翻译：用于校准放射图像的方法和装置
公开(公告)号：US06976785B2
公开(公告)日：2005-12-20
申请号：US10172286
申请日：2002-06-14
申请人： Jean Lienard , Francisco Sureda , Regis Vaillant
发明人： Jean Lienard , Francisco Sureda , Regis Vaillant
IPC分类号： A61B6/00 , G01N23/04 , G01D18/00
CPC分类号： G01N23/04
摘要： A method and device for calibrating images acquired by radiography comprising an X-ray source, an image acquisition, a support placed between the source and the image acquisition, on which support an object to be X-rayed is intended to be positioned. A region of interest, in which the object is likely to be found, is determined between the support and the image acquisition, the center of gravity of this region is determined and at least one calibration factor of the image or images is determined as a function of the position thus determined.
摘要翻译：用于校准通过X射线摄影获得的图像的方法和装置，包括X射线源，图像采集，放置在源和图像采集之间的支撑件，其上支撑要被X射线的对象旨在被定位。在支持和图像采集之间确定可能找到对象的感兴趣区域，确定该区域的重心，并且确定图像或图像的至少一个校准因子作为函数的位置如此确定。

10. 发明授权

US06831644B2 Method and device for displaying the deployment of an endovascular prosthesis 有权
标题翻译：显示血管内假体部署的方法和装置
公开(公告)号：US06831644B2
公开(公告)日：2004-12-14
申请号：US10175634
申请日：2002-06-19
申请人： Jean Lienard , Francisco Sureda , Regis Vaillant
发明人： Jean Lienard , Francisco Sureda , Regis Vaillant
IPC分类号： G06T1500
CPC分类号： G06T3/4084 , A61B6/12 , A61F2/82 , H04N13/221 , H04N13/254 , H05G1/64
摘要： An element is dissolved displayed having a periodic structure, such as a stent, images of which are acquired by means of a radiography machine of the type comprising an X-ray source and an image detector and an image display placed opposite the source. The images obtained are displayed with an overall magnification of: f S f C ⁢ ⁢ S ⁢ ⁢ F × E ⁢ ⁢ S ⁢ ⁢ D × π 180 , where fS is the fundamental frequency, being the inverse of the spatial period of the stent in pairs of lines per millimeter, where fCSF is the spatial frequency corresponding to the contrast sensitivity maximum for the human eye in cycles per degree; and where ESD is the expected distance in millimeters between the images displayed and an observer viewing these images.
摘要翻译：溶解显示具有周期性结构的元件，例如支架，其图像通过包括X射线源和图像检测器的类型的放射线照相机和与源相对放置的图像显示器获取。所获得的图像以总体放大倍率显示：其中fS是基本频率，是支架在每毫米线对中的空间周期的倒数，其中fCSF是对应于人的对比敏感度最大值的空间频率眼睛循环每度; 并且其中ESD是所显示的图像和观看这些图像的观察者之间的预期距离（以毫米为单位）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式