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. 发明申请

US20090060313A1 Method for reducing image noise in the context of capturing an image using on different radiation spectra 有权
标题翻译：在使用不同辐射光谱拍摄图像的上下文中降低图像噪声的方法
公开(公告)号：US20090060313A1
公开(公告)日：2009-03-05
申请号：US12229755
申请日：2008-08-26
申请人： Wolfgang Harer , Klaus Klingenbeck-Regn , Ernst-Peter Ruhrnschopf
发明人： Wolfgang Harer , Klaus Klingenbeck-Regn , Ernst-Peter Ruhrnschopf
IPC分类号： G06K9/00
CPC分类号： G06K9/40 , A61B6/032 , A61B6/4035 , A61B6/482 , G06T5/002 , G06T5/50 , G06T2207/10116 , G06T2207/30004
摘要： The invention relates to a method for reducing image noise in the context of capturing at least one radiation-based image of a region of interest using two different radiation spectra, in particular two different x-ray radiation spectra, comprising the following steps: capturing raw images of the region of interest using the two different radiation spectra with in each case mutually paired measured values; and to separate different materials in the region of interest, applying to the captured raw images at least one inversion operator with integrated noise filtering, said operator describing a transition from a measured value pair to an assigned reconstruction value pair.
摘要翻译：本发明涉及一种用于在使用两个不同的辐射光谱，特别是两个不同的X射线辐射光谱捕获感兴趣区域的至少一个基于辐射的图像的上下文中降低图像噪声的方法，包括以下步骤：使用两种不同辐射光谱的感兴趣区域的图像，在每种情况下彼此成对测量值; 并且在感兴趣区域中分离不同的材料，将具有集成噪声滤波的至少一个反演算子应用于所捕获的原始图像，所述算子描述从测量值对到分配的重建值对的转变。

2. 发明申请

US20090135993A1 Computed tomography method 有权
标题翻译：计算机断层扫描法
公开(公告)号：US20090135993A1
公开(公告)日：2009-05-28
申请号：US12313638
申请日：2008-11-21
申请人： Wolfgang Harer , Alois Nottling , Ernst-Peter Ruhrnschopf
发明人： Wolfgang Harer , Alois Nottling , Ernst-Peter Ruhrnschopf
IPC分类号： H05G1/60
CPC分类号： A61B6/032 , A61B6/4291 , A61B6/5282 , A61B6/585 , A61B6/589
摘要： The invention relates to a computed tomography method. The airgap associated with a projection direction is determined by determining, in the projection images, edge pixels which map object edges on a detector. By back-projecting the edge pixels in an object image space it is possible to determine an envelope polygon for an outline contour of the examination object. The width of the airgap associated with a specific projection direction can then be determined on the basis of the envelope polygon. Exact knowledge of the current airgap serves to improve the scattered radiation correction.
摘要翻译：本发明涉及一种计算机断层摄影方法。通过在投影图像中确定在检测器上映射物体边缘的边缘像素来确定与投影方向相关联的气隙。通过将边缘像素反投影在对象图像空间中，可以确定检查对象的轮廓轮廓的包络多边形。然后可以基于包络多边形来确定与特定投影方向相关联的气隙的宽度。对当前气隙的准确了解有助于改善散射辐射校正。

3. 发明申请

US20090080736A1 Method and device for the separate three-dimensional representation of arteries and veins in an examination object and device 有权
标题翻译：用于检查对象和装置中动脉和静脉的单独三维表示的方法和装置
公开(公告)号：US20090080736A1
公开(公告)日：2009-03-26
申请号：US12283419
申请日：2008-09-11
申请人： Wolfgang Harer , Michael Zellerhoff
发明人： Wolfgang Harer , Michael Zellerhoff
IPC分类号： G06K9/00
CPC分类号： A61B6/504 , A61B6/466 , A61B6/481 , Y10S378/901
摘要： There is described a method for a separate three-dimensional representation of arteries and/or veins of a vascular system in an examination object by means of a tomography x-ray device with the following steps: Implementation of a mask pass of the x-ray device with N projections at N angular positions about the examination object without contrast agent; Implementation of a first filler pass of the x-ray device about the examination object with M projections at M of the N angular positions after injection of a contrast agent, where M
摘要翻译：描述了通过以下步骤通过断层摄影x射线装置对检查对象中的血管系统的动脉和/或静脉进行单独的三维表示的方法：执行x射线的掩模通过装置，N个投影在关于没有造影剂的检查对象的N个角位置处; 在注射造影剂后，在N个角位置的M处实施X射线装置关于检查对象的第一填充物通过，其中M

4. 发明申请

US20080031403A1 Method for providing 3D image data and system for taking x-ray images 有权
标题翻译：提供3D图像数据的方法和用于摄取X射线图像的系统
公开(公告)号：US20080031403A1
公开(公告)日：2008-02-07
申请号：US11888882
申请日：2007-08-02
申请人： Wolfgang Harer , Michael Zellerhoff
发明人： Wolfgang Harer , Michael Zellerhoff
IPC分类号： A61B6/02 , A61B6/03
CPC分类号： A61B6/02 , A61B6/4458
摘要： In a known type of tomosynthesis x-ray source and x-ray detector are linearly moved and x-rays images are taken for a large number of positions, the images being reconstructed to give a 3D image record. According to the invention x-ray source and x-ray detector are swiveled and a sequence of x-rays is subsequently taken again, x-ray source and x-ray detector again being moved in a straight line. One drawback of simple tomosynthesis with movement in a straight line is suppressed thereby, the drawback being that the quality of reconstruction is particularly poor in a certain direction.
摘要翻译：在已知类型的断层合成中，X射线源和X射线检测器被线性移动，并且对于大量的位置拍摄X射线图像，重建图像以给出3D图像记录。根据本发明，X射线源和X射线检测器被旋转，并且随后再次取得一系列X射线，x射线源和X射线检测器再次以直线移动。抑制了直线运动的简单断层合成的一个缺点在于其重要性在一定方向上特别差。

5. 发明申请

US20090175407A1 Computer tomography method for determining an object region 有权
标题翻译：用于确定对象区域的计算机断层摄影方法
公开(公告)号：US20090175407A1
公开(公告)日：2009-07-09
申请号：US12317061
申请日：2008-12-18
申请人： Wolfgang Harer , Ernst-Peter Ruhmschopf , Bernhard Scholz
发明人： Wolfgang Harer , Ernst-Peter Ruhmschopf , Bernhard Scholz
IPC分类号： H05G1/60 , G06K9/00
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4441 , G01N2223/401 , G01N2223/419 , G01N2223/421 , G01N2223/612
摘要： In a computer tomography method an object region of the object being examined is determined in that projection beams that are linked with maximum attenuation are sought in cropped projection images. A central point of the object region is then determined and the object sections associated with the projection beams plotted on the central point. The object region can be at least approximately determined using the end points of the object sections.
摘要翻译：在计算机断层摄影方法中，确定被检查物体的物体区域是在裁切的投影图像中寻找与最大衰减相关联的投影光束。然后确定对象区域的中心点，并将与投影光束相关联的对象部分绘制在中心点上。可以使用对象部分的端点至少近似地确定对象区域。

6. 发明授权

US07447295B2 Method and tomography unit for the reconstruction of a tomographic display of an object 失效
标题翻译：用于重建物体的断层显像的方法和断层摄影单元
公开(公告)号：US07447295B2
公开(公告)日：2008-11-04
申请号：US11584544
申请日：2006-10-23
申请人： Martin Hoheisel , Wolfgang Harer , Holger Kunze , Karl Stierstorfer
发明人： Martin Hoheisel , Wolfgang Harer , Holger Kunze , Karl Stierstorfer
IPC分类号： H05G1/60
CPC分类号： G01N23/046 , A61B6/032 , A61B6/583 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/421 , G06T2211/424
摘要： A method is disclosed for reconstructing a tomographic representation of an object from projection data off a moving radiation source through this object onto a detector, filtering and back projection of the projection data being executed in the reconstruction. In an embodiment of the method, by using at least one identical spatial arrangement of the radiation source, the detector and a test object instead of the object to be scanned, there is determined by test projections and an iterative reconstruction technique, a filter that in the given arrangement results in an optimum filtering and back projection of the projection data of the test object for the tomographic representation. Further, the object is scanned instead of the test object in the given arrangement and projection data are determined. Finally, the reconstruction of the tomographic representation is carried out using these projection data and the filter determined. Moreover, an embodiment of a tomography unit for carrying out this method is also disclosed.
摘要翻译：公开了一种用于将通过该物体的运动辐射源的投影数据从物体重建成检测器的方法，对重建中正在执行的投影数据进行滤波和反投影。在该方法的一个实施例中，通过使用辐射源，检测器和测试对象的至少一个相同的空间排列而不是要扫描的对象，通过测试投影和迭代重建技术来确定滤波器，给定的布置导致用于断层图像的测试对象的投影数据的最佳滤波和反投影。此外，在给定的布置中扫描对象而不是测试对象，并且确定投影数据。最后，使用这些投影数据并确定滤波器来进行断层图像的重建。此外，还公开了用于执行该方法的断层摄影单元的实施例。

7. 发明申请

US20080130826A1 Method for generating tomographical recordings of a partially cyclically moving examination object 有权
标题翻译：用于产生部分循环运动的检查对象的断层记录的方法
公开(公告)号：US20080130826A1
公开(公告)日：2008-06-05
申请号：US11903941
申请日：2007-09-25
申请人： Wolfgang Harer , Holger Kunze
发明人： Wolfgang Harer , Holger Kunze
IPC分类号： A61B6/00
CPC分类号： A61B8/5276 , A61B6/032 , A61B6/503 , A61B6/527 , A61B6/541 , G06T11/006 , G06T2211/412 , G06T2211/424
摘要： The invention relates to a method for generating tomographical recordings of a partially cyclically moving examination object by a tomography system and a tomography system, comprising the steps of: a spatial scanning of the examination object taking place using at least one detector, which generates detector output data; movement information of the moving subarea of the examination object being recorded during the scanning and being assigned to the detector output data or stored in a manner which correlates to the detector output data; and tomographical image data being reconstructed from the measured detector output data in a number of iteration steps. The invention is characterized in that iteration takes place in at least two iteration stages, with data records being used from the detector output data of different cycle phase regions in at least two iteration stages.
摘要翻译：本发明涉及一种用于通过断层摄影系统和断层摄影系统产生部分循环运动的检查对象的断层记录的方法，包括以下步骤：使用至少一个检测器进行检查对象的空间扫描，所述检测器产生检测器输出数据; 在扫描期间被记录的检查对象的移动子区域的运动信息被分配给检测器输出数据或以与检测器输出数据相关的方式存储; 并且在多个迭代步骤中从所测量的检测器输出数据重构断层图像数据。本发明的特征在于迭代发生在至少两个迭代阶段，其中在至少两个迭代阶段中从不同周期相位区域的检测器输出数据使用数据记录。

8. 发明申请

US20050073303A1 Magnetic resonance imaging apparatus and method wherein streak artifacts are minimized in modular k-space scanning 有权
标题翻译：磁共振成像装置和方法，其中在模块化k空间扫描中条纹伪影最小化
公开(公告)号：US20050073303A1
公开(公告)日：2005-04-07
申请号：US10921021
申请日：2004-08-18
申请人： Wolfgang Harer , Peter Speier
发明人： Wolfgang Harer , Peter Speier
IPC分类号： G01R33/565 , G01V3/00
CPC分类号： G01R33/565 , G01R33/4824 , G01R33/56518 , G01R33/56545
摘要： In a method and MRI apparatus for the minimization of streak artifacts in modular k-space scanning in magnetic resonance imaging, an odd integer k-space scanning module number Nφ=2n+1 is defined that defines the number of incrementally rotated repeated modules of the k-space scanning process, a slice selection gradient selects any slice in the range of the object to be examined, and data for all Nφ angle-oriented k-space scanning modules in the selected slice acquired such that each k-space scanning module has an azmuthal distance of Δ ⁢ ⁢ φ 2 = 360 ⁢ ° 2 ⁢ ⁢ N φ from both adjacent projections, with the direction of the scanning of the adjacent k-space scanning modules alternating.
摘要翻译：在用于在磁共振成像中的模块化k空间扫描中最小化条纹伪影的方法和MRI装置中，定义了奇整数k空间扫描模块编号Nphi = 2n + 1，其定义了增量旋转的重复模块的数量 k空间扫描处理，片选择梯度选择待检查对象的范围内的任何切片，并且获取所选择的切片中的所有Nphi角度取向的k空间扫描模块的数据，使得每个k空间扫描模块具有 1 $Delta=360°/ MN> NMI>，这两个相邻投影中的相邻k空间扫描模块的扫描方向交替。$

9. 发明申请

US20090092225A1 Method for the three-dimensional representation of a moving structure by a tomographic method 有权
标题翻译：通过断层摄影法对移动结构进行三维表示的方法
公开(公告)号：US20090092225A1
公开(公告)日：2009-04-09
申请号：US12221938
申请日：2008-08-07
申请人： Jan Boese , Wolfgang Harer , Michael Zellerhoff
发明人： Jan Boese , Wolfgang Harer , Michael Zellerhoff
IPC分类号： A61B6/00 , G06K9/00
CPC分类号： A61B6/025 , A61B6/027 , A61B6/4441 , A61B6/466 , A61B6/481 , A61B6/503 , A61B6/504 , A61B6/507 , G06T11/006 , G06T2211/404 , G06T2211/412 , G06T2211/436
摘要： The invention relates to a method for a three-dimensional representation of a moving structure by a tomographic method, in which during one recording pass a series of projection recordings is registered by an imaging unit at different recording angles between a start position and an end position, it being possible to reconstruct three-dimensional image data from the projection recordings with the following steps: a) generation of tomosynthesis projection recordings along a tomosynthesis scanning path; b) interpolation of the data of the tomosynthesis projection recordings in accordance with an interpolation algorithm in order to generate a projection data set; c) use of a tomosynthesis reconstruction method on the projection data set in order to generate a tomosynthesis volume image; d) repetition of steps b) and c) for all times of interest, and e) display of tomosynthesis representations from the tomosynthesis volume images.
摘要翻译：本发明涉及一种用于通过断层摄影方法对运动结构进行三维表示的方法，其中在一次记录通过期间，成像单元以起始位置和结束位置之间的不同记录角度登记一系列投影记录可以通过以下步骤从投影记录重建三维图像数据：a）沿着断层合成扫描路径生成断层合成投影记录; b）根据插值算法对所述断层合成投影记录的数据进行插值，以生成投影数据集; c）在投影数据集上使用断层合成重建方法，以便产生断层合成体积图像; d）对所有感兴趣的时间重复步骤b）和c），以及e）从断层合成体积图像显示断层合成表示。

10. 发明申请

US20080123928A1 Analytical method for a number of two-dimensional projection images of a three-dimensional examination object 有权
标题翻译：用于三维检查对象的多个二维投影图像的分析方法
公开(公告)号：US20080123928A1
公开(公告)日：2008-05-29
申请号：US11986857
申请日：2007-11-27
申请人： Wolfgang Harer , Marcus Pfister
发明人： Wolfgang Harer , Marcus Pfister
IPC分类号： G06K9/00
CPC分类号： G06T11/006
摘要： A number of two-dimensional projection images of a three-dimensional examination object are assigned image times and imaging parameters. The projection images are combined into reconstruction groups including projection images with image times specifically assigned or within a time interval specific to the reconstruction groups. The reconstruction groups are determined in such a way that three-dimensional reconstructions of the examination object with direction-dependent local resolution can be determined based on the projection images of the reconstruction groups; it is not possible to determine three-dimensional reconstructions of the examination object with direction-independent local resolution. Three-dimensional reconstructions of the examination are determined based on the projection images of the reconstruction groups. Reconstruction times are determined based on the image times assigned to the projection images of the reconstruction groups and assigned to the three-dimensional reconstructions. Further analyses are performed as a function of the temporal sequence of the three-dimensional reconstructions.
摘要翻译：将三维检查对象的多个二维投影图像分配给图像时间和成像参数。将投影图像组合成重建组，包括具有特定分配的图像时间的投影图像或者在重建组特有的时间间隔内。确定重建组，使得可以基于重建组的投影图像来确定具有方向依赖性局部分辨率的检查对象的三维重建; 不可能用方向独立的局部分辨率来确定检查对象的三维重建。根据重建组的投影图像确定检查的三维重建。基于分配给重建组的投影图像的图像时间并分配给三维重建来确定重建时间。作为三维重建的时间序列的函数进行进一步的分析。

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