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247 条记录 (耗时 0.034 秒)

    Method of image reconstruction for a filtered back projection in limited angle tomography
    43.
    发明授权
    Method of image reconstruction for a filtered back projection in limited angle tomography 有权
    用于有限角度层析成像中滤波反投影的图像重建方法

    公开(公告)号：US09317941B2

    公开(公告)日：2016-04-19

    申请号：US14344230

    申请日：2012-08-27

    申请人： Tim Nielsen ,  Sebastian Hitziger ,  Michael Grass

    发明人： Tim Nielsen ,  Sebastian Hitziger ,  Michael Grass

    IPC分类号： G06K9/00 ,  G06T11/00 ,  A61B6/03

    CPC分类号： G06T11/006 ,  A61B6/035 ,  G06T2210/41 ,  G06T2211/421 ,  G06T2211/436

    摘要： The present invention is directed to a limited angle tomography in combination with a filtered back projection using a special filter operator X. The filter operator X used within the present invention makes it possible to perform region of interest reconstructions although delivering high quality reconstruction images as generated by high effort SART methods. The used filter operator is purely and solely mathematically determined and defined by the spatial geometry which is used for the limited angle tomography. Without having the need to perform several iterations, the present invention directly calculates a solution, i.e. reconstructed image, equivalent to known iteratively construction methods. Although, incomplete projection data p may only be used, the present invention provides for a high image quality.

    摘要翻译： 本发明涉及一种与使用特殊滤波器操作器X的滤波反投影相结合的有限角度断层摄影。本发明中使用的滤波器操作器X可以执行感兴趣的重建区域，尽管传送高质量的重建图像产生 通过高效的SART方法。 所使用的过滤器操作员纯粹且仅在数学上由用于有限角度层析成像的空间几何来确定和限定。 在不需要进行多次迭代的情况下，本发明直接计算与已知的迭代构造方法相当的解，即重构图像。 尽管可以仅使用不完全的投影数据p，但是本发明提供了高图像质量。

    Reconstructing an object of interest
    46.
    发明授权
    Reconstructing an object of interest 有权
    重建感兴趣的对象

    公开(公告)号：US09087400B2

    公开(公告)日：2015-07-21

    申请号：US13515830

    申请日：2010-12-10

    申请人： Klaus Erhard ,  Michael Grass ,  Thomas Buelow ,  Eberhard Sebastian Hansis

    发明人： Klaus Erhard ,  Michael Grass ,  Thomas Buelow ,  Eberhard Sebastian Hansis

    IPC分类号： G06K9/00 ,  G06T11/00

    CPC分类号： G06T11/006 ,  G06T2211/436

    摘要： A system for generating a reconstruction of an object of interest comprises a shape model generator (1) for generating a shape model representing a shape of the object in dependence on a plurality of projections of the object, and a reconstructor (2) for reconstructing the object, based on the projections, in dependence on the shape model to obtain the reconstruction of the object. The reconstructor (2) comprises a soft-tissue reconstructor (4) for generating a reconstruction favoring soft tissue, based on the plurality of projections, and a sparse reconstructor (5) for generating a reconstruction of sparse objects, based on the plurality of projections. The reconstructor (2) comprises a clipping subsystem (3) for clipping an outside of the object from the reconstruction, based on the shape model, or the reconstructor (2) is arranged for reconstructing only an inside and/or boundary of the object as defined by the shape model.

    摘要翻译： 用于生成感兴趣对象的重建的系统包括：形状模型生成器（1），用于根据对象的多个投影来生成表示对象的形状的形状模型;以及重建器（2），用于重建 对象，根据投影，依靠形状模型获得物体的重建。 重建器（2）包括一个软组织重构器（4），用于基于多个投影产生有利于软组织的重建，以及一个稀疏重建器（5），用于基于多个突起产生稀疏对象的重构 。 重建器（2）包括用于基于形状模型从重建中剪除对象外部的剪辑子系统（3），或者重建器（2）被布置为仅重构对象的内部和/或边界， 由形状模型定义。

    Adaptive roadmapping
    47.
    发明授权
    Adaptive roadmapping 有权
    自适应路线图

    公开(公告)号：US09053535B2

    公开(公告)日：2015-06-09

    申请号：US13810680

    申请日：2011-07-15

    申请人： Raoul Florent ,  Vincent Auvray ,  Michael Grass ,  Dirk Schaefer ,  Gert Schoonenberg

    发明人： Raoul Florent ,  Vincent Auvray ,  Michael Grass ,  Dirk Schaefer ,  Gert Schoonenberg

    IPC分类号： G06K9/00 ,  G06T7/00 ,  A61B6/12 ,  A61B6/00 ,  A61B19/00 ,  G06T19/00

    CPC分类号： G06T7/0012 ,  A61B6/12 ,  A61B6/463 ,  A61B6/487 ,  A61B6/504 ,  A61B6/5235 ,  A61B90/37 ,  A61B2090/364 ,  A61B2090/365 ,  A61B2090/3764 ,  G06T7/32 ,  G06T19/00 ,  G06T2207/10121 ,  G06T2207/30101

    摘要： An adaptive roadmapping device and method for examination of an object include providing pre-navigation image data representing part of the object being a vascular structure including an element of interest and having a tree-like structure with a plurality of sub-trees; generating a vessel representation based on the pre-navigation image data; acquiring live image data of the object; determining spatial relation of the pre-navigation image data and the live image data; analyzing the live image data by identifying and localizing the element in the live image data; determining a sub-tree in which the element is positioned, where the determining is based on the localization of the element and on the spatial relation; selecting a portion of the vascular structure based on the determined sub-tree; generating a combination of the live image data and an image of the selected portion of the vascular structure; and displaying the combination as a tailored roadmap.

    摘要翻译： 用于检查对象的自适应路线图设备和方法包括提供表示作为包括感兴趣元素并且具有多个子树的树状结构的血管结构的对象的一部分的导航前图像数据; 基于导航前图像数据生成船舶表示; 获取对象的实时图像数据; 确定所述导航前图像数据和实况图像数据的空间关系; 通过识别和定位实时图像数据中的元素来分析实况图像数据; 确定元素位于其中的子树，其中确定基于元素的定位和空间关系; 基于确定的子树选择血管结构的一部分; 生成活体图像数据和血管结构的所选部分的图像的组合; 并将该组合显示为定制的路线图。

    Multi-modality breast imaging
    48.
    发明授权
    Multi-modality breast imaging 有权
    多形态乳腺成像

    公开(公告)号：US08977018B2

    公开(公告)日：2015-03-10

    申请号：US13384265

    申请日：2010-07-12

    申请人： Thomas Buelow ,  Michael Grass ,  Klaus Erhard

    发明人： Thomas Buelow ,  Michael Grass ,  Klaus Erhard

    IPC分类号： G06K9/00 ,  G06T7/00

    CPC分类号： G06T7/0032 ,  G06T7/344 ,  G06T2207/10088 ,  G06T2207/10116 ,  G06T2207/30068

    摘要： A system for multi-modality breast imaging comprises a first shape model constructing sub-system (1) for constructing a first shape model of the breast as represented in a first image (9), in which the breast has its natural shape, a second shape model constructing sub-system (2) for constructing a second shape model of the breast as represented in a second image (10), in which the breast is compressed by using a compression paddle, and a deformation estimating sub-system (3) for estimating a volumetric deformation field (12) defining a mapping between the first image (9) and the second image (10) on the basis of the shape models and an elastic deformation model (11) of the breast, the deformation estimating sub-system (3) being arranged to estimate the volumetric deformation field (12) on the basis of a first tissue surface of the breast in the first image (9) and a second tissue surface of the breast in the second image (10).

    摘要翻译： 一种用于多模式乳房成像的系统，包括构成子系统（1）的第一形状模型，用于构建乳房的第一形状模型，如第一图像（9）所示，其中乳房具有其自然形状，第二形状模型 用于构造乳房的第二形状模型的形状模型构造子系统（2），如第二图像（10）所示，其中通过使用压缩桨来压缩乳房，以及变形估计子系统（3） 用于基于形状模型和乳房的弹性变形模型（11）来估计限定第一图像（9）和第二图像（10）之间的映射的体积变形场（12），变形估计子步骤 系统（3）被布置为基于第一图像（9）中的乳房的第一组织表面和第二图像（10）中的乳房的第二组织表面来估计体积变形场（12）。

    Visualization of the coronary artery tree
    49.
    发明授权
    Visualization of the coronary artery tree 有权
    冠状动脉树的可视化

    公开(公告)号：US08923474B2

    公开(公告)日：2014-12-30

    申请号：US13131277

    申请日：2009-11-20

    申请人： Eberhard Sebastian Hansis ,  Michael Grass

    发明人： Eberhard Sebastian Hansis ,  Michael Grass

    IPC分类号： G01N23/083 ,  A61B6/00 ,  G06T11/00

    CPC分类号： A61B6/504 ,  A61B6/4441 ,  A61B6/466 ,  A61B6/481 ,  A61B6/541 ,  G06T11/006 ,  G06T2211/404

    摘要： The present invention is related to a method for reconstruction of the coronary arteries and an examination apparatus for reconstruction of the coronary arteries. To provide improved coronary artery information, an apparatus and a method are provided where a gating signal is provided (32) and a first gated X-ray image sequence of one of the left or right branches of the coronary arteries is acquired (34) with injected contrast agent into the one of the left or right branches of the coronary arteries. Further, a second gated X-ray image sequence of the other branch of the coronary arteries is acquired (36) with injected contrast agent into said other branch. Then, a gated reconstructing (38) of the left and the right coronary artery is suggested and a volume data (40, 42) of the coronary arteries is generated. The volume data of the left and right coronary arteries is registered (44) in relation to time and space. Further; the registered volume data (48, 50) of the left and the right coronary arteries is combined and a combined coronary artery tree volume data set (52) is generated (54). Finally, the combined coronary tree volume data set is visualized (56).

    摘要翻译： 本发明涉及冠状动脉重建方法和冠状动脉重建检查装置。 为了提供改善的冠状动脉信息，提供了一种装置和方法，其中提供门控信号（32），并且获取冠状动脉的左分支或右分支之一的第一选通X射线图像序列（34），其中 将注射的造影剂注射到冠状动脉的左侧或右侧分支中。 此外，冠状动脉的另一个分支的第二选通X射线图像序列（36）被注入造影剂获取到所述另一分支中。 然后，建议左冠状动脉和右冠状动脉的门控重建（38），并且产生冠状动脉的体积数据（40,42）。 左冠状动脉和右冠状动脉的体积数据相对于时间和空间被记录（44）。 进一步; 组合左冠状动脉和右冠状动脉的记录体数据（48,50），并且生成组合的冠状动脉树体积数据组（52）（54）。 最后，组合冠状动脉树体数据集可视化（56）。

    MIXTURE OF SUCCINIC ESTERS AS PLASTICIZER
    50.
    发明申请
    MIXTURE OF SUCCINIC ESTERS AS PLASTICIZER 有权
    作为增塑剂的化合物混合物

    公开(公告)号：US20140069299A1

    公开(公告)日：2014-03-13

    申请号：US14008425

    申请日：2012-02-27

    申请人： Hinnerk Gordon Becker ,  Michael Grass

    发明人： Hinnerk Gordon Becker ,  Michael Grass

    IPC分类号： C08K5/11

    CPC分类号： C08K5/11 ,  C07C69/40 ,  C08K5/10 ,  C09J11/06 ,  C10M105/36 ,  C10M129/72

    摘要： Mixture of succinic esters, which is characterized in that the alkyl radical has a proportion of alkyl components having less than 9 carbon atoms of not more than 15% by mass, the alkyl radical has a proportion of alkyl components having more than 9 carbon atoms of not more than 25% by mass and the proportion of 3,5,5-trimethylhexyl radicals is not more than 5 mol % and the proportion of linear n-nonyl radicals is not more than 15 mol %.

    摘要翻译： 琥珀酸酯的混合物，其特征在于，烷基的碳原子数小于9的烷基成分的比例为15质量％以下，烷基的碳原子数为9以上的烷基成分 不大于25质量％，3,5,5-三甲基己基的比例不超过5摩尔％，线性正壬基的比例不大于15摩尔％。