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    Methods for Updating 2D/3D Registration on Movement and Computing Device
    1.
    发明申请
    Methods for Updating 2D/3D Registration on Movement and Computing Device 有权
    更新移动和计算设备上2D / 3D注册的方法

    公开(公告)号：US20150030229A1

    公开(公告)日：2015-01-29

    申请号：US14339945

    申请日：2014-07-24

    申请人： Anja Borsdorf ,  Benno Heigl ,  Jian Wang

    发明人： Anja Borsdorf ,  Benno Heigl ,  Jian Wang

    IPC分类号： A61B6/00 ,  G06T7/00 ,  A61F2/82 ,  A61B6/12 ,  A61B19/00

    CPC分类号： A61B6/5241 ,  A61B6/032 ,  A61B6/12 ,  A61B6/487 ,  A61B6/501 ,  A61B6/505 ,  A61B2090/364 ,  A61B2090/367 ,  A61F2/82 ,  G06T7/246 ,  G06T7/33 ,  G06T2207/10072 ,  G06T2207/10121 ,  G06T2207/10124 ,  G06T2207/30004 ,  G06T2207/30008

    摘要： Methods for updating a 2D/3D registration between a three-dimensional image data set corresponding to a target area subjected to a movement and a plurality of two-dimensional projection images of the target area include: selecting a plurality of contour points along a contour, the contour being visible in a first projection image and a three-dimensional image data set registered therewith, the plurality of contour points being associated with a rigid object in the target area; determining a displacement of each contour point of the plurality of contour points between the first projection image and a successively captured second projection image; obtaining movement information for each contour point of the plurality of contour points based on the determined displacement, the movement information describing a movement of the rigid object; and updating the registration based on the obtained movement information.

    摘要翻译： 用于更新对应于经受运动的目标区域的三维图像数据集与目标区域的多个二维投影图像之间的2D / 3D配准的方法包括：沿着轮廓选择多个轮廓点， 所述轮廓在第一投影图像和与其对应的三维图像数据集中可见，所述多个轮廓点与所述目标区域中的刚性对象相关联; 确定所述第一投影图像和连续捕获的第二投影图像之间的所述多个轮廓点的每个轮廓点的位移; 基于所确定的位移获得所述多个轮廓点中的每个轮廓点的运动信息，所述运动信息描述所述刚性物体的运动; 以及基于所获得的移动信息更新所述注册。

    Methods for updating 2D/3D registration on movement and computing device
    2.
    发明授权
    Methods for updating 2D/3D registration on movement and computing device 有权
    更新移动和计算设备上2D / 3D注册的方法

    公开(公告)号：US09549710B2

    公开(公告)日：2017-01-24

    申请号：US14339945

    申请日：2014-07-24

    申请人： Anja Borsdorf ,  Benno Heigl ,  Jian Wang

    发明人： Anja Borsdorf ,  Benno Heigl ,  Jian Wang

    IPC分类号： G06K9/00 ,  A61B6/00 ,  A61B6/12 ,  A61F2/82 ,  G06T7/00 ,  A61B6/03 ,  G06T7/20

    CPC分类号： A61B6/5241 ,  A61B6/032 ,  A61B6/12 ,  A61B6/487 ,  A61B6/501 ,  A61B6/505 ,  A61B2090/364 ,  A61B2090/367 ,  A61F2/82 ,  G06T7/246 ,  G06T7/33 ,  G06T2207/10072 ,  G06T2207/10121 ,  G06T2207/10124 ,  G06T2207/30004 ,  G06T2207/30008

    摘要： Methods for updating a 2D/3D registration between a three-dimensional image data set corresponding to a target area subjected to a movement and a plurality of two-dimensional projection images of the target area include: selecting a plurality of contour points along a contour, the contour being visible in a first projection image and a three-dimensional image data set registered therewith, the plurality of contour points being associated with a rigid object in the target area; determining a displacement of each contour point of the plurality of contour points between the first projection image and a successively captured second projection image; obtaining movement information for each contour point of the plurality of contour points based on the determined displacement, the movement information describing a movement of the rigid object; and updating the registration based on the obtained movement information.

    摘要翻译： 用于更新对应于经受运动的目标区域的三维图像数据集与目标区域的多个二维投影图像之间的2D / 3D配准的方法包括：沿着轮廓选择多个轮廓点， 所述轮廓在第一投影图像和与其对应的三维图像数据集中可见，所述多个轮廓点与所述目标区域中的刚性物体相关联; 确定所述第一投影图像和连续捕获的第二投影图像之间的所述多个轮廓点的每个轮廓点的位移; 基于所确定的位移获得所述多个轮廓点中的每个轮廓点的运动信息，所述运动信息描述所述刚性物体的运动; 以及基于所获得的移动信息更新所述注册。

    Method for 2D/3D Registration, Computational Apparatus, and Computer Program
    3.
    发明申请
    Method for 2D/3D Registration, Computational Apparatus, and Computer Program 有权
    2D / 3D注册方法，计算机和计算机程序

    公开(公告)号：US20160335777A1

    公开(公告)日：2016-11-17

    申请号：US15151670

    申请日：2016-05-11

    申请人： Anja Borsdorf ,  Jian Wang

    发明人： Anja Borsdorf ,  Jian Wang

    IPC分类号： G06T7/00 ,  G06F19/00

    CPC分类号： G06T7/12 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/487 ,  A61B6/5223 ,  A61B6/5235 ,  A61B90/00 ,  A61B2090/364 ,  A61B2090/376 ,  G06F19/00 ,  G06F19/321 ,  G06T7/0012 ,  G06T7/269 ,  G06T7/33 ,  G06T2207/10028 ,  G06T2207/10072 ,  G06T2207/10116 ,  G06T2207/10124 ,  G06T2207/30008

    摘要： A method for registering a three-dimensional image data record of a target region of a patient with a two-dimensional x-ray image is provided. The method includes selecting at least one rigid reference structure with an associated contour; establishing a two-dimensional gradient x-ray image and a three-dimensional gradient data record of the image data record; finding a neighborhood in the gradient x-ray image from a plurality of neighborhoods extending about test points for a plurality of contour points; establishing local two-dimensional displacement information by comparison of the contour points with the associated comparison points; establishing movement parameters of a three-dimensional movement model describing a movement of the target region between recording of the image data record and the x-ray image from the local two-dimensional displacement information; and establishing a registration transformation describing the registration by correcting the test transformation based on the movement parameters.

    摘要翻译： 提供了一种用于记录具有二维X射线图像的患者的目标区域的三维图像数据记录的方法。 所述方法包括：选择具有相关轮廓的至少一个刚性参考结构; 建立图像数据记录的二维梯度x射线图像和三维梯度数据记录; 从围绕多个轮廓点的测试点延伸的多个邻域中发现梯度x射线图像中的邻域; 通过将轮廓点与相关联的比较点进行比较来建立局部二维位移信息; 建立描述在从所述局部二维位移信息记录图像数据记录和X射线图像之间的目标区域的运动的三维运动模型的运动参数; 以及通过基于所述移动参数来校正所述测试变换来建立描述所述注册的注册变换。

    Method for increasing the quality of computer tomographic recording series by projection data processing and CT system having a computation unit
    7.
    发明授权
    Method for increasing the quality of computer tomographic recording series by projection data processing and CT system having a computation unit 失效
    通过投影数据处理和具有计算单元的CT系统来提高计算机断层摄影记录系列的质量的方法

    公开(公告)号：US08675937B2

    公开(公告)日：2014-03-18

    申请号：US12314892

    申请日：2008-12-18

    申请人： Rainer Raupach ,  Anja Borsdorf

    发明人： Rainer Raupach ,  Anja Borsdorf

    IPC分类号： A61B6/03

    CPC分类号： A61B6/03 ,  A61B6/507 ,  G06T5/002 ,  G06T5/10 ,  G06T11/006 ,  G06T2207/10081

    摘要： A method is disclosed for increasing the quality of computer tomographic recording series, to a computation unit and to an X-ray CT system. An embodiment of the method includes scanning a subject over a period of time which makes it possible to record at least two temporally offset projection data sets of the same recording region; transforming the projection data sets into transformation data sets for at least two spatial frequency ranges; calculating temporal compensation values of the transformation data sets for some of the spatial frequency ranges and replacing the compensated values of the transformation data sets with the calculated compensation values in new transformation data sets, projection data of congruent rays always being compared; transforming the new transformation data sets back into new projection data sets; reconstructing image data sets on the basis of the new projection data sets and representing the image data sets.

    摘要翻译： 公开了一种用于将计算机断层记录系列的质量提高到计算单元和X射线CT系统的方法。 该方法的实施例包括在一段时间内扫描对象，这使得可以记录相同记录区域的至少两个时间偏移的投影数据集; 将投影数据集转换为用于至少两个空间频率范围的变换数据集; 计算一些空间频率范围的变换数据集的时间补偿值，并用新的变换数据集中的计算出的补偿值代替变换数据集的补偿值，总是比较全等光线的投影数据; 将新的变换数据集转换为新的投影数据集; 基于新的投影数据集重建图像数据集并表示图像数据集。

    Method for noise reduction in digital images with locally different and directional noise
    8.
    发明授权
    Method for noise reduction in digital images with locally different and directional noise 失效
    具有局部不同和定向噪声的数字图像中的降噪方法

    公开(公告)号：US08139835B2

    公开(公告)日：2012-03-20

    申请号：US12076179

    申请日：2008-03-14

    申请人： Anja Borsdorf

    发明人： Anja Borsdorf

    IPC分类号： G06K9/00 ,  G06K9/46 ,  G06K9/40 ,  A61B6/00 ,  G01N23/00

    CPC分类号： G06T5/002 ,  G06T5/10 ,  G06T5/50 ,  G06T2207/10081 ,  G06T2207/20064 ,  G06T2207/20192 ,  G06T2207/30004

    摘要： A method is disclosed for noise reduction in images with locally different and directional noise, in particular for noise reduction in image data records of computed tomography. In at least one embodiment of the method, two image data records of an identical object region that have mutually independent noise are provided. The two image data records are decomposed by a discrete wavelet transformation into a number of frequency bands, detailed images having high frequency structures being obtained in at least two different directions. Noise images in the respective frequency bands and directions are obtained by subtracting a wavelet coefficient of the two input images. These noise images are used to estimate noise locally and as a function of direction, and on the basis of this estimate local threshold values are calculated and applied to the averaged wavelet coefficients of the input images. A result image with reduced noise is obtained after an inverse wavelet transformation.

    摘要翻译： 公开了一种用于具有局部不同和定向噪声的图像中的噪声降低的方法，特别是用于计算机断层摄影的图像数据记录中的降噪。 在该方法的至少一个实施例中，提供具有相互独立噪声的相同对象区域的两个图像数据记录。 两个图像数据记录通过离散小波变换分解成多个频带，在至少两个不同方向上获得具有高频结构的详细图像。 通过减去两个输入图像的小波系数来获得各频带和方向上的噪声图像。 这些噪声图像用于本地估计噪声并且作为方向的函数，并且基于该估计，计算局部阈值并将其应用于输入图像的平均小波系数。 在小波逆变换之后获得具有降低噪声的结果图像。

    Method for recording and reconstructing a three-dimensional image dataset and x-ray apparatus
    9.
    发明申请
    Method for recording and reconstructing a three-dimensional image dataset and x-ray apparatus 有权
    用于记录和重建三维图像数据集和X射线装置的方法

    公开(公告)号：US20110274335A1

    公开(公告)日：2011-11-10

    申请号：US13101208

    申请日：2011-05-05

    申请人： Jan Boese ,  Anja Borsdorf ,  Frank Dennerlein ,  Holger Kunze

    发明人： Jan Boese ,  Anja Borsdorf ,  Frank Dennerlein ,  Holger Kunze

    IPC分类号： G06K9/00 ,  A61B6/03

    CPC分类号： G06T11/005 ,  A61B6/4441

    摘要： A method for recording and reconstructing a three-dimensional image dataset is proposed. A plurality of projection images are acquired under different recording geometries in relation to an object to be recorded by an X-ray apparatus, in particular a C-arm X-ray apparatus. At least two projection images are recorded for at least one recording geometry, in particular for every recording geometry. The three-dimensional image dataset is reconstructed from the project images.

    摘要翻译： 提出了一种用于记录和重建三维图像数据集的方法。 相对于由X射线装置，特别是C臂X射线装置记录的物体，在不同的记录几何形状下获取多个投影图像。 对于至少一个记录几何形状记录至少两个投影图像，特别是对于每个记录几何形状。 从项目图像重建三维图像数据集。

    Method for noise reduction in tomographic image data records
    10.
    发明申请
    Method for noise reduction in tomographic image data records 审中-公开
    断层图像数据记录中降噪的方法

    公开(公告)号：US20070196008A1

    公开(公告)日：2007-08-23

    申请号：US11703248

    申请日：2007-02-07

    申请人： Anja Borsdorf ,  Rainer Raupach

    发明人： Anja Borsdorf ,  Rainer Raupach

    IPC分类号： G06K9/00

    CPC分类号： G06T5/10 ,  G06T5/002 ,  G06T11/005 ,  G06T2200/04 ,  G06T2207/10072 ,  G06T2207/20016 ,  G06T2207/20064 ,  G06T2207/30004

    摘要： A method is disclosed for noise reduction in 3D volume data records from tomographic recordings. In at least one embodiment, the method includes generating at least two statistically independent equally dimensioned 3D volume data records for the same location and situation. In at least one embodiment of the method, the at least two statistically independent 3D volume data records are respectively subjected to 3D wavelet transformation with low pass filtering and high pass filtering in the three spatial directions of the three dimensional volume data record, and a respective initial data record with wavelet coefficients is calculated. Further, correlation coefficients for identical wavelet coefficients are ascertained from the initial data records and a new wavelet data record is calculated by weighting the wavelet coefficients from at least one initial data record on the basis of the ascertained correlation coefficients for the wavelet coefficients from the initial data records. Finally, a new 3D volume data record is transformed back from the new wavelet data record.

    摘要翻译： 公开了一种用于降低断层摄影记录的3D体积数据记录中的噪声的方法。 在至少一个实施例中，该方法包括为相同的位置和情况生成至少两个统计上独立的等尺寸的3D体数据记录。 在该方法的至少一个实施例中，至少两个统计独立的3D体积数据记录分别在三维体积数据记录的三个空间方向上进行低通滤波和高通滤波的3D小波变换，以及相应的 计算具有小波系数的初始数据记录。 此外，从初始数据记录中确定相同的小波系数的相关系数，并且通过基于从初始值的小波系数确定的相关系数对来自至少一个初始数据记录的小波系数进行加权来计算新的小波数据记录 数据记录。 最后，新的3D体数据记录从新的小波数据记录转换回来。