-
公开(公告)号：US08957891B2
公开(公告)日：2015-02-17
申请号：US13120188
申请日：2009-09-18
申请人： Cristian Lorenz , Tobias Klinder
发明人： Cristian Lorenz , Tobias Klinder
CPC分类号： G06T15/08 , G06T2210/41
摘要： A system for visualizing an object in image data using a first cross-section surface coupled to a model of the object, the system comprising a model unit for adapting a model to the object in the image data, a surface unit for adapting the first cross-section surface to the adapted model on the basis of the coupling between the first cross-section surface and the model, and a visualization unit for computing an image from the image data on the basis of the adapted first cross-section surface. The first cross-section surface may be used to define a slice of the image data for visualizing useful features of the object. Advantageously, adapting the model to the object in the image data and the coupling between the first cross-section surface and the model enable the first cross-section surface to be adapted to the image data. Thus, the shape, orientation and/or position of the adapted first cross-section surface is/are based on the shape, orientation and/or position of the adapted model.
摘要翻译： 一种用于使用耦合到所述对象的模型的第一截面表面来可视化所述图像数据中的对象的系统，所述系统包括用于使模型适应所述图像数据中的对象的模型单元，用于适配所述第一十字的表面单元 基于所述第一横截面和所述模型之间的耦合的所述适配模型的切割表面以及用于基于所述适配的第一横截面从所述图像数据计算图像的可视化单元。 第一横截面可以用于定义图像数据的切片以便可视化对象的有用特征。 有利的是，使模型适应图像数据中的对象和第一横截面和模型之间的耦合使得第一横截面能适应图像数据。 因此，适配的第一横截面的形状，取向和/或位置基于适配模型的形状，取向和/或位置。
-
公开(公告)号：US20110284751A1
公开(公告)日：2011-11-24
申请号：US13145132
申请日：2010-01-15
申请人： Tobias Klinder , Cristian Lorenz , Michael H. Kuhn
发明人： Tobias Klinder , Cristian Lorenz , Michael H. Kuhn
CPC分类号： G06T5/50 , G06T7/246 , G06T11/005 , G06T2207/10072 , G06T2207/20201 , G06T2207/30004 , G06T2211/412
摘要： A system is provided for obtaining a nuclear image of a moving object. The system comprises an input (14), a processing unit (15) and an output (17). The input (14) is provided for receiving a nuclear image and morphological images of the object. The processing unit (15) is configured to process the morphological images to obtain sparse motion information of the object, to use the sparse motion information and a motion model for obtaining estimated motion information about the object, and to generate a motion-corrected nuclear image based on the estimated motion information and the acquired nuclear image. The output (17) provides the corrected nuclear image.
摘要翻译： 提供一种用于获得运动物体的核图像的系统。 系统包括输入（14），处理单元（15）和输出（17）。 输入（14）用于接收核图像和对象的形态图像。 处理单元（15）被配置为处理形态图像以获得对象的稀疏运动信息，使用稀疏运动信息和运动模型来获得关于对象的估计的运动信息，并且生成运动校正的核图像 基于估计的运动信息和所获取的核图像。 输出（17）提供校正的核图像。
-
公开(公告)号：US20110175909A1
公开(公告)日：2011-07-21
申请号：US13120188
申请日：2009-09-18
申请人： Cristian Lorenz , Tobias Klinder
发明人： Cristian Lorenz , Tobias Klinder
IPC分类号： G06T15/00
CPC分类号： G06T15/08 , G06T2210/41
摘要： The invention relates to a system (100) for visualizing an object in image data using a first cross-section surface coupled to a model of the object, the system comprising a model unit for adapting a model to the object in the image data, a surface unit for adapting the first cross-section surface to the adapted model on the basis of the coupling between the first cross-section surface and the model, and a visualization unit for computing an image from the image data on the basis of the adapted first cross-section surface. The first cross-section surface may be used to define a slice of the image data for visualizing useful features of the object. Any suitable rendering technique, e.g. maximum intensity projection, can be used by the visualization unit to compute the image based on the slice of the image data defined by the first cross-section surface. Because the first cross-section surface of the invention is coupled to the model, the position, orientation and/or shape of the surface is determined by the model adapted to the object in the image data. Advantageously, adapting the model to the object in the image data and the coupling between the first cross-section surface and the model enable the first cross-section surface to be adapted to the image data. Thus, the shape, orientation and/or position of the adapted first cross-section surface is/are based on the shape, orientation and/or position of the adapted model. Adapting the first cross-section surface directly to the object based on features in the image data would be less reliable and less accurate because the surface comprises fewer features of the object than the model.
摘要翻译： 本发明涉及一种用于使用耦合到对象的模型的第一横截面来使图像数据中的对象可视化的系统（100），该系统包括用于使模型适应图像数据中的对象的模型单元， 表面单元，用于根据第一横截面和模型之间的耦合使第一横截面适应于适应模型;以及可视化单元，用于基于所适配的第一横截面和模型从图像数据计算图像 横截面。 第一横截面可以用于定义图像数据的切片以便可视化对象的有用特征。 任何合适的渲染技术，例如 最大强度投影可以被可视化单元用于基于由第一横截面表面限定的图像数据的切片来计算图像。 因为本发明的第一横截面与模型相连，表面的位置，取向和/或形状由适合图像数据中对象的模型确定。 有利的是，使模型适应图像数据中的对象和第一横截面和模型之间的耦合使得第一横截面能适应图像数据。 因此，适配的第一横截面的形状，取向和/或位置基于适配模型的形状，取向和/或位置。 基于图像数据中的特征将第一横截面直接适应对象将不那么可靠，并且不太准确，因为该表面包含比模型更少的对象特征。
-
公开(公告)号：US20110033104A1
公开(公告)日：2011-02-10
申请号：US12936425
申请日：2009-04-02
IPC分类号： G06K9/46
CPC分类号： G06T7/0081 , G06T7/11 , G06T2207/10072 , G06T2207/10116 , G06T2207/30012
摘要： The invention relates to a system (100) for segmenting an object in image data using model-based image segmentation, the system comprising a feature unit (120) for identifying features in the image data for computing an external energy of a mesh on the basis of a current position of the mesh, wherein the feature unit (120) further comprises a candidate feature unit (122) for selecting a plurality of candidate features in the image data, for identifying a feature to be included in the features identified in the image data, a position unit (124) for determining a position of each candidate feature of the plurality of the candidate features relative to a region of the image data, a feature function unit (126) for computing a strength of each candidate feature, wherein the strength of each candidate feature depends on the position of each candidate feature relative to the region, and an evaluation unit (128) for evaluating each candidate feature of the plurality of candidate features and for identifying the feature among the plurality of candidate features based on this evaluation. Determining whether a selected candidate feature is located inside the region which should be avoided, e.g., inside another mesh adapted to another object in the image data, allows penalizing this candidate feature during the computation of the strength of each feature and thus during the evaluation of the plurality of candidate features.
摘要翻译： 本发明涉及一种用于使用基于模型的图像分割来分割图像数据中的对象的系统（100），该系统包括用于识别图像数据中用于计算网格的外部能量的特征的特征单元（120） 所述特征单元还包括用于选择所述图像数据中的多个候选特征的候选特征单元（122），用于识别要包括在所述图像中标识的特征中的特征 数据，用于确定多个候选特征相对于图像数据的区域的每个候选特征的位置的位置单元（124），用于计算每个候选特征的强度的特征函数单元（126），其中， 每个候选特征的强度取决于每个候选特征相对于该区域的位置，以及评估单元（128），用于评估多个候选特征中的每个候选特征，并且f 或基于该评估来识别多个候选特征中的特征。 确定所选择的候选特征是否位于应该避免的区域内，例如在图像数据中适应于另一物体的另一个网格内，允许在计算每个特征的强度期间惩罚该候选特征，并且因此在评估期间 多个候选特征。
-
公开(公告)号：US09424680B2
公开(公告)日：2016-08-23
申请号：US13639189
申请日：2011-03-16
申请人： Rafael Wiemker , Sven Kabus , Tobias Klinder
发明人： Rafael Wiemker , Sven Kabus , Tobias Klinder
CPC分类号： G06T15/08
摘要： A method for reformatting image data includes obtaining volumetric image data indicative of an anatomical structure of interest, identifying a surface of interest of the anatomical structure of interest in the volumetric image data, identifying a thickness for a sub-volume of interest of the volumetric image data, shaping the sub-volume of interest such that at least one of its sides follows the surface of interest, and generating, via a processor, a maximum intensity projection (MIP) or direct volume rendering (DVR) based on the identified surface of interest and the shaped sub-volume of interest.
摘要翻译： 重新格式化图像数据的方法包括：获取表示感兴趣的解剖结构的体积图像数据，识别体积图像数据中感兴趣的解剖结构的感兴趣的表面，识别体积图像的感兴趣的子体积的厚度 数据，使感兴趣的子体积成形，使得其侧面中的至少一个跟随感兴趣的表面，并且经由处理器基于所识别的表面生成最大强度投影（MIP）或直接体绘制（DVR） 兴趣和兴趣的形状子体积。
-
公开(公告)号：US20140055584A1
公开(公告)日：2014-02-27
申请号：US13978198
申请日：2012-01-12
CPC分类号： A61B6/5294 , A61B1/00045 , A61B1/2676 , A61B6/03 , A61B6/032 , A61B6/466 , A61B6/52 , A61B90/37 , A61B2034/107 , A61B2090/365 , A61B2090/366 , G06T7/0012 , G06T17/00 , G06T19/00 , G06T2210/41
摘要： A method, system and program product are provided for planning an intervention procedure in a body lumen. A CT scan of the body lumen is performed. A virtual rendering is created of the inside of the body lumen corresponding to an interventional camera image. Then a virtual tape corresponding to a planned path for the intervention procedure is projected onto a wall of the body lumen. The virtual tape is projected onto the lumen wall, which is relatively distant from the camera point on the virtual rendering, so the tape does not appear to oscillate like a central thread. Also, since the virtual tape is located on the lumen wall, it does not occlude the center of the lumen, allowing a user to better visualize the lumen during planning, during fly through, and even during an actual intervention.
摘要翻译： 提供了一种方法，系统和程序产品，用于规划体腔内的干预程序。 进行体腔的CT扫描。 创建与介入照相机图像对应的体腔内部的虚拟渲染。 然后将对应于用于干预过程的计划路径的虚拟带投影到体腔的壁上。 虚拟磁带投影到管腔壁上，该管腔壁在虚拟渲染上相对远离摄像机点，因此磁带似乎不像中心线那样振荡。 此外，由于虚拟带位于管腔壁上，因此不会堵塞管腔的中心，允许使用者在规划期间，飞行过程中甚至在实际干预期间更好地可视化流明。
-
公开(公告)号：US20130108117A1
公开(公告)日：2013-05-02
申请号：US13808607
申请日：2011-07-05
申请人： Sven Kabus , Tobias Klinder , Cristian Lorenz
发明人： Sven Kabus , Tobias Klinder , Cristian Lorenz
IPC分类号： G06T7/20
CPC分类号： G06T7/20 , G06T3/0081 , G06T7/0016 , G06T7/30 , G06T2207/10081 , G06T2207/30061
摘要： A system for validating motion estimation comprising a field unit (110) for obtaining a deformation vector field (DVF) estimating the motion by transforming a first image at a first phase of the motion into a second image at a second phase of the motion, a metric unit (120) for computing a metric of a local volume change at a plurality of locations, and a conformity unit (130) for computing a conformity measure based on the computed metric of the local volume change at the plurality of locations and a local property of the first or second image defined at the plurality of locations. Based on the value of the conformity measure, the DFV estimating the motion is validated. Experiments show that the conformity measure based on the computed metric of a local volume change at a plurality of locations and the local property of the first or second image, defined at the plurality of locations, does not necessarily favor a large weight for the outer force to provide a more accurate registration. One reason for this observation may be that large deformations providing more accurate alignment often lead to deformations resulting in unreasonably large volume changes. DVFs comprising such deformations thus are more likely to be discarded by the system of the invention.
摘要翻译： 一种用于验证运动估计的系统，包括：场单元（110），用于通过在运动的第二阶段将运动的第一阶段的第一图像变换为第二图像来获得估计运动的变形矢量场（DVF）; 用于计算多个位置处的本地卷变化的度量的度量单位（120），以及用于基于所计算的所述多个位置处的本地卷变化的度量的度量单位（130）以及局部 在多个位置定义的第一或第二图像的属性。 根据合格度的值，对运动的DFV进行了验证。 实验表明，基于多个位置处的局部体积变化的计算度量和在多个位置处限定的第一或第二图像的局部属性的一致性度量不一定有利于外力的大重量 提供更准确的注册。 这种观察的一个原因可能是提供更精确对准的大变形通常导致变形，导致不合理地大的体积变化。 包括这种变形的DVF因此更可能被本发明的系统丢弃。
-
公开(公告)号：US20130064440A1
公开(公告)日：2013-03-14
申请号：US13639189
申请日：2011-03-16
申请人： Rafael Wiemker , Sven Kabus , Tobias Klinder
发明人： Rafael Wiemker , Sven Kabus , Tobias Klinder
IPC分类号： G06K9/00
CPC分类号： G06T15/08
摘要： A method for reformatting image data includes obtaining volumetric image data indicative of an anatomical structure of interest, identifying a surface of interest of the anatomical structure of interest in the volumetric image data, identifying a thickness for a sub-volume of interest of the volumetric image data, shaping the sub-volume of interest such that at least one of its sides follows the surface of interest, and generating, via a processor, a maximum intensity projection (MIP) or direct volume rendering (DVR) based on the identified surface of interest and the shaped sub-volume of interest.
摘要翻译： 重新格式化图像数据的方法包括：获取表示感兴趣的解剖结构的体积图像数据，识别体积图像数据中感兴趣的解剖结构的感兴趣的表面，识别体积图像的感兴趣的子体积的厚度 数据，使感兴趣的子体积成形，使得其侧面中的至少一个跟随感兴趣的表面，并且经由处理器基于所识别的表面生成最大强度投影（MIP）或直接体绘制（DVR） 兴趣和兴趣的形状子体积。
-
公开(公告)号：US20120237097A1
公开(公告)日：2012-09-20
申请号：US13510153
申请日：2010-11-18
申请人： Thomas Koehler , Tobias Klinder , Sven Kabus
发明人： Thomas Koehler , Tobias Klinder , Sven Kabus
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , G06T2211/412
摘要： A method includes reconstructing the projection data based on a reconstruction algorithm that compensates for both motion and tissue density changes of the moving organ across different motion phases, thereby generating motion and density compensated image data. A data compensator includes a reconstructor that reconstructs motion compensated image data based on an reconstruction algorithm that compensates for tissue density changes in a moving object.
摘要翻译： 一种方法包括基于补偿运动器官在不同运动相位上的运动和组织密度变化的重建算法重建投影数据，从而产生运动和密度补偿图像数据。 数据补偿器包括重建器，其基于补偿移动物体中的组织密度变化的重建算法重建运动补偿图像数据。
-
公开(公告)号：US09171377B2
公开(公告)日：2015-10-27
申请号：US13808607
申请日：2011-07-05
申请人： Sven Kabus , Tobias Klinder , Cristian Lorenz
发明人： Sven Kabus , Tobias Klinder , Cristian Lorenz
CPC分类号： G06T7/20 , G06T3/0081 , G06T7/0016 , G06T7/30 , G06T2207/10081 , G06T2207/30061
摘要： A system for validating motion estimation comprising a field unit (110) for obtaining a deformation vector field (DVF) estimating the motion by transforming a first image at a first phase of the motion into a second image at a second phase of the motion, a metric unit (120) for computing a metric of a local volume change at a plurality of locations, and a conformity unit (130) for computing a conformity measure based on the computed metric of the local volume change at the plurality of locations and a local property of the first or second image defined at the plurality of locations. Based on the value of the conformity measure, the DFV estimating the motion is validated. Experiments show that the conformity measure based on the computed metric of a local volume change at a plurality of locations and the local property of the first or second image, defined at the plurality of locations, does not necessarily favor a large weight for the outer force to provide a more accurate registration. One reason for this observation may be that large deformations providing more accurate alignment often lead to deformations resulting in unreasonably large volume changes. DVFs comprising such deformations thus are more likely to be discarded by the system of the invention.
摘要翻译： 一种用于验证运动估计的系统，包括：场单元（110），用于通过在运动的第二阶段将运动的第一阶段的第一图像变换为第二图像来获得估计运动的变形矢量场（DVF）; 用于计算多个位置处的本地卷变化的度量的度量单位（120），以及用于基于所计算的所述多个位置处的本地卷变化的度量的度量单位（130）以及局部 在多个位置定义的第一或第二图像的属性。 根据合格度的值，对运动的DFV进行了验证。 实验表明，基于多个位置处的局部体积变化的计算度量和在多个位置处限定的第一或第二图像的局部属性的一致性度量不一定有利于外力的大重量 提供更准确的注册。 这种观察的一个原因可能是提供更精确对准的大变形通常导致变形，导致不合理地大的体积变化。 包括这种变形的DVF因此更可能被本发明的系统丢弃。
-
-
-
-
-
-
-
-
-
搜索结果
26 条记录 (耗时 0.015 秒)
