Choosing anatomical variant model for image segmentation
    1.
    发明授权
    Choosing anatomical variant model for image segmentation 有权
    选择图像分割的解剖变异模型

    公开(公告)号:US09367913B2

    公开(公告)日:2016-06-14

    申请号:US13823472

    申请日:2011-09-13

    IPC分类号: G06T7/00 G06T17/00 G06T15/08

    摘要: A system (100) for segmenting an object in an image adapts a first model for segmenting the object to the image. A feature is extracted from the image based on the adapted first model. A second model is selected for segmenting the object from a plurality of models for segmenting the object, based on the feature extracted from the image. The second model includes additional detail of the object. The second model is utilized based on the adapted first model and/or the feature extracted from the image; the initialized second model is adapted to the image. The features extracted from the image based on the adapted first model help the system (100) to select the second model for segmenting the object from a plurality of models for segmenting the object. The adapted first model and/or the extracted features are also used for initializing the second model. Because the second model includes the additional detail of the object, the segmentation result using the second model is more complete than the segmentation result Obtained using the first model. Moreover, the initialization of the second model based on the adapted first model and/or the detected features Improves the accuracy of the second model adaptation.

    摘要翻译: 用于在图像中分割对象的系统(100)适应用于将对象分割成图像的第一模型。 基于适配的第一模型从图像中提取特征。 基于从图像提取的特征,选择第二模型用于从多个模型分割对象以分割对象。 第二个模型包括对象的附加细节。 基于适应的第一模型和/或从图像提取的特征来利用第二模型; 初始化的第二模型适用于图像。 基于适配的第一模型从图像提取的特征帮助系统(100)选择用于从多个模型分割对象的第二模型以分割对象。 适应的第一模型和/或提取的特征也用于初始化第二模型。 因为第二个模型包括对象的附加细节,所以使用第二模型的分割结果比使用第一模型获得的分割结果更完整。 此外,基于适配的第一模型和/或检测到的特征对第二模型的初始化提高了第二模型适应的准确性。

    CHOOSING ANATOMICAL VARIANT MODEL FOR IMAGE SEGMENTATION
    2.
    发明申请
    CHOOSING ANATOMICAL VARIANT MODEL FOR IMAGE SEGMENTATION 有权
    选择用于图像分割的解剖学变体模型

    公开(公告)号:US20130286013A1

    公开(公告)日:2013-10-31

    申请号:US13823472

    申请日:2011-09-13

    IPC分类号: G06T7/00 G06T17/00

    摘要: The invention relates to a system (100) for segmenting an object in an image, comprising a first adapter (110) for adapting a first model for segmenting the object to the image, an analyzer (115) for extracting a feature from the image based on the adapted first model, a selector (120) for selecting a second model for segmenting the object from a plurality of models for segmenting the object, based on the feature extracted from the image, wherein the second model comprises additional detail of the object, an initializer (125) for initializing the second model based on the adapted first model and/or the feature extracted from the image, and a second adapter (130) for adapting the initialized second model to the image. The features extracted from the image based on the adapted first model help the system (100) to select the second model for segmenting the object from a plurality of models for segmenting the object. The adapted first model and/or the extracted features are also used for initializing the second model. Because the second model comprises the additional detail of the object, the segmentation result using the second model is more complete than the segmentation result obtained using the first model. Moreover, the initialization of the second model based on the adapted first model and/or the detected features improves the accuracy of the second model adaptation.

    摘要翻译: 本发明涉及一种用于分割图像中的对象的系统(100),包括用于适配用于将对象分割成图像的第一模型的第一适配器(110),用于从图像中提取特征的分析器(115) 在适配的第一模型上,基于从图像提取的特征,选择器(120),用于从多个模型中选择用于分割对象的第二模型,用于分割对象,其中第二模型包括对象的附加细节, 用于基于所述适配的第一模型和/或从所述图像提取的特征来初始化所述第二模型的初始化器(125)和用于将所述初始化的第二模型适配到所述图像的第二适配器(130)。 基于适配的第一模型从图像提取的特征帮助系统(100)选择用于从多个模型分割对象的第二模型以分割对象。 适应的第一模型和/或提取的特征也用于初始化第二模型。 因为第二模型包括对象的附加细节,所以使用第二模型的分割结果比使用第一模型获得的分割结果更完整。 此外,基于适应的第一模型和/或检测到的特征的第二模型的初始化提高了第二模型适应的准确性。

    SYSTEM FOR PROVIDING LUNG VENTILATION INFORMATION
    4.
    发明申请
    SYSTEM FOR PROVIDING LUNG VENTILATION INFORMATION 有权
    提供肺通气信息的系统

    公开(公告)号:US20110286652A1

    公开(公告)日:2011-11-24

    申请号:US13146885

    申请日:2010-01-25

    IPC分类号: G06K9/00

    摘要: A system for displaying lung ventilation information, the system comprising an input (12) and a processing unit (15). The input being provided for receiving multiple CT images (71) of a lung, each CT image (71) corresponding to one phase of at least two different phases in a respiratory cycle. The processing unit (15) being configured to compare CT images (71) corresponding to different phases in the respiratory cycle for determining a deformation vector field for each phase, to generate for each phase a ventilation image (72) based on the corresponding deformation vector field, to spatially align the ventilation images (72), and to generate for at least one common position (62) in each one of the aligned ventilation images (72), a function (81) of a time course of a ventilation value for said common position (62), each ventilation value in the function (81) being based on the deformation vector fields corresponding to the aligned ventilation images (73).

    摘要翻译: 一种用于显示肺通气信息的系统,所述系统包括输入(12)和处理单元(15)。 所述输入被提供用于接收肺的多个CT图像(71),每个CT图像(71)对应于呼吸周期中的至少两个不同相的一个相。 所述处理单元(15)被配置为比较对应于呼吸周期中的不同相位的CT图像(71),以确定每个相位的变形矢量场,以根据相应的变形矢量为每个阶段生成通气图像(72) 在空间上对准通气图像(72),并且为每个对齐的通气图像(72)中的至少一个公共位置(62)产生一个通风值的时间过程的功能(81),用于 所述公共位置(62)中,所述功能(81)中的每个换气值基于对应于对齐的通气图像(73)的变形矢量场。

    System for providing lung ventilation information
    5.
    发明授权
    System for providing lung ventilation information 有权
    提供肺通气信息的系统

    公开(公告)号:US08798343B2

    公开(公告)日:2014-08-05

    申请号:US13146885

    申请日:2010-01-25

    IPC分类号: G06K9/00

    摘要: A system for displaying lung ventilation information, the system comprising an input (12) and a processing unit (15). The input being provided for receiving multiple CT images (71) of a lung, each CT image (71) corresponding to one phase of at least two different phases in a respiratory cycle. The processing unit (15) being configured to compare CT images (71) corresponding to different phases in the respiratory cycle for determining a deformation vector field for each phase, to generate for each phase a ventilation image (72) based on the corresponding deformation vector field, to spatially align the ventilation images (72), and to generate for at least one common position (62) in each one of the aligned ventilation images (72), a function (81) of a time course of a ventilation value for said common position (62), each ventilation value in the function (81) being based on the deformation vector fields corresponding to the aligned ventilation images (73).

    摘要翻译: 一种用于显示肺通气信息的系统,所述系统包括输入(12)和处理单元(15)。 所述输入被提供用于接收肺的多个CT图像(71),每个CT图像(71)对应于呼吸周期中的至少两个不同相的一个相。 所述处理单元(15)被配置为比较对应于呼吸周期中的不同相位的CT图像(71),以确定每个相位的变形矢量场,以根据相应的变形矢量为每个阶段生成通气图像(72) 在空间上对准通气图像(72),并且为每个对齐的通气图像(72)中的至少一个公共位置(62)产生功能(81),其中通风值的时间过程为 所述公共位置(62)中,所述功能(81)中的每个换气值基于对应于对齐的通气图像(73)的变形矢量场。

    Reduction of heart motion artifacts in thoracic CT imaging
    7.
    发明授权
    Reduction of heart motion artifacts in thoracic CT imaging 有权
    减少胸部CT成像中的心脏运动伪影

    公开(公告)号:US08233691B2

    公开(公告)日:2012-07-31

    申请号:US12438952

    申请日:2007-08-27

    IPC分类号: G06K9/00

    摘要: The invention relates to a system for adapting a plurality of model meshes to a plurality of image data. The system has a registration unit for registering the plurality of model meshes with the plurality of image data on the basis of a computation of a registration transformation for transforming the plurality of model meshes, and an adaptation unit for adapting the plurality of registered model meshes to the plurality of image data on the basis of a computation of locations of mesh vertices of the plurality of model meshes. The described system is capable of reducing motion artifacts in tomographic images computed from data acquired at a plurality of different cardiac cycle phases.

    摘要翻译: 本发明涉及一种用于将多个模型网格适配成多个图像数据的系统。 该系统具有注册单元,用于基于用于变换多个模型网格的注册变换的计算,将多个模型网格注册到多个图像数据;以及适配单元,用于将多个注册模型网格适配到 基于多个模型网格的网格顶点的位置的计算来生成多个图像数据。 所描述的系统能够减少从在多个不同的心动周期阶段获取的数据计算的断层图像中的运动伪像。

    REDUCTION OF HEART MOTION ARTIFACTS IN THORACIC CT IMAGING
    8.
    发明申请
    REDUCTION OF HEART MOTION ARTIFACTS IN THORACIC CT IMAGING 有权
    减少心脏CT成像中心脏运动的影响

    公开(公告)号:US20100014736A1

    公开(公告)日:2010-01-21

    申请号:US12438952

    申请日:2007-08-27

    IPC分类号: G06K9/32 G06K9/00

    摘要: The invention relates to a system (100) for adapting a plurality of model meshes to a plurality of image data, the system comprising a registration unit (110) for registering the plurality of model meshes with the plurality of image data on the basis of a computation of a registration transformation for transforming the plurality of model meshes, and an adaptation unit (120) for adapting the plurality of registered model meshes to the plurality of image data on the basis of a computation of locations of mesh vertices of the plurality of model meshes. The system (100) may further comprise a computing unit (130) for computing sparse vector fields comprising vectors of displacements of vertices of the adapted model meshes, an approximation unit (140) for computing dense vector fields on the basis of the sparse vector fields, a merge unit (150) for merging image data sets by means of the computed dense vector fields, and a reconstruction unit (155) for reconstructing a motion-compensated image data from the computed dense vector fields. The described system (100) is capable of reducing motion artifacts in tomographic images computed from data acquired at a plurality of different cardiac cycle phases.

    摘要翻译: 本发明涉及一种用于将多个模型网格适配到多个图像数据的系统(100),该系统包括:注册单元(110),用于基于多个图像数据登记多个模型网格与多个图像数据 用于变换多个模型网格的注册变换的计算;以及适应单元,用于根据多个模型的网格顶点的位置的计算来将多个注册模型网格适配到多个图像数据 网格 系统(100)还可以包括计算单元(130),用于计算包括适应模型网格的顶点位移矢量的稀疏矢量场,用于基于稀疏矢量场计算密集矢量场的近似单元(140) ,用于通过所计算的密集矢量场合并图像数据组的合并单元(150),以及用于从所计算的密集矢量场重构运动补偿图像数据的重建单元(155)。 所描述的系统(100)能够减少从在多个不同的心动周期阶段获取的数据计算的断层图像中的运动伪影。

    Device and Method for Mapping the Distribution of an X-ray Fluorescence Marker
    9.
    发明申请
    Device and Method for Mapping the Distribution of an X-ray Fluorescence Marker 失效
    用于映射X射线荧光标记分布的装置和方法

    公开(公告)号:US20080226025A1

    公开(公告)日:2008-09-18

    申请号:US10598003

    申请日:2005-02-11

    IPC分类号: G01N23/223

    摘要: The invention relates to a method and a device for determining the distribution of an X-ray fluorescence (XRF) marker (16) in a body volume (14). The body volume (14) is irradiated with a beam of rays (12) from an X-ray source (10) with a first ray component with a quantum energy just above and a second ray component with a quantum energy just below the K-edge of the XRF marker (16). Secondary radiation emitted from the body volume (14) is detected in a location-resolved way by a detector (30). To separate the X-ray fluorescence components in the secondary radiation from background radiation, the body volume is irradiated for a second time with a beam of rays from which the first ray component has been substantially removed by a filter (22) made from the material of the XRF marker.

    摘要翻译: 本发明涉及一种用于确定身体体积(14)中的X射线荧光(XRF)标记物(16)的分布的方法和装置。 用来自X射线源(10)的射线束(12)照射具有刚好在上面的量子能的第一射线分量的体积(14),并且具有刚好低于K值的量子能量的第二射线分量, 边缘的XRF标记(16)。 通过检测器(30)以位置分辨的方式检测从体积(14)发射的次级辐射。 为了将二次辐射中的X射线荧光成分从背景辐射中分离出来,用第一射线成分基本上被该材料制成的过滤器(22)除去的射线束照射体积第二次 的XRF标记。

    Device and method for mapping the distribution of an X-ray fluorescence marker
    10.
    发明授权
    Device and method for mapping the distribution of an X-ray fluorescence marker 失效
    用于映射X射线荧光标记分布的装置和方法

    公开(公告)号:US07656996B2

    公开(公告)日:2010-02-02

    申请号:US10598003

    申请日:2005-02-11

    IPC分类号: G01T1/36

    摘要: The invention relates to a method and a device for determining the distribution of an X-ray fluorescence (XRF) marker (16) in a body volume (14). The body volume (14) is irradiated with a beam of rays (12) from an X-ray source (10) with a first ray component with a quantum energy just above and a second ray component with a quantum energy just below the K-edge of the XRF marker (16). Secondary radiation emitted from the body volume (14) is detected in a location-resolved way by a detector (30). To separate the X-ray fluorescence components in the secondary radiation from background radiation, the body volume is irradiated for a second time with a beam of rays from which the first ray component has been substantially removed by a filter (22) made from the material of the XRF marker.

    摘要翻译: 本发明涉及一种用于确定身体体积(14)中的X射线荧光(XRF)标记物(16)的分布的方法和装置。 用来自X射线源(10)的射线束(12)照射具有刚好在上面的量子能的第一射线分量的体积(14),并且具有刚好低于K值的量子能量的第二射线分量, 边缘的XRF标记(16)。 通过检测器(30)以位置分辨的方式检测从体积(14)发射的次级辐射。 为了将二次辐射中的X射线荧光成分从背景辐射中分离出来,用第一射线成分基本上被该材料制成的过滤器(22)除去的射线束照射体积第二次 的XRF标记。