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    • 1. 发明授权
    • Method and system for estimating three-dimensional respiratory motion
    • 估计三维呼吸运动的方法和系统
    • US07844317B2
    • 2010-11-30
    • US10723728
    • 2003-11-26
    • Prathyusha K. SallaGopal B. AvinashJason A. Polzin
    • Prathyusha K. SallaGopal B. AvinashJason A. Polzin
    • A61B5/05
    • A61B6/5217A61B5/0037A61B5/055A61B5/113A61B5/721A61B5/7289A61B5/7292A61B6/503A61B6/527A61B6/541G01R33/28G01R33/563
    • One or more techniques are provided for measuring the motion of an organ in three dimensions. As provided by the technique, the motion of the organ along each dimension may be determined by a suitable methodology. Where sensor-based motion measurements are suitable, one or more sensors may be placed on a patient to measure internal motion of the organ of interest along one or more perpendicular axes. Where image-based techniques are suitable, the motion of the internal organ along a perpendicular axis may determined using pre-acquisition image data or acquisition image data when suitable. Concurrent motion vectors for all three dimensions may be obtained from the motion data acquired for the perpendicular axes by the disparate methodologies. The concurrent motion vectors may be combined to describe the three-dimensional motion of the organ over time. Validation of the motion data may be performed for each of the one-dimensional motion data sets using motion data acquired by image-based methods, or other image-based methods, for a respective axis.
    • 提供了一种或多种用于测量器官在三维中的运动的技术。 如该技术所提供的,器官沿着每个维度的运动可以通过合适的方法来确定。 在基于传感器的运动测量是合适的情况下,可以将一个或多个传感器放置在患者身上以测量沿着一个或多个垂直轴的感兴趣器官的内部运动。 在基于图像的技术是合适的情况下,内部器官沿着垂直轴的运动可以在适当时使用预采集图像数据或采集图像数据来确定。 可以通过不同的方法从垂直轴获取的运动数据中获得所有三维的并行运动矢量。 可以组合并行运动矢量以描述器官随时间的三维运动。 运动数据的验证可使用针对相应轴的基于图像的方法或其他基于图像的方法获取的运动数据来针对每个一维运动数据集执行。
    • 3. 发明授权
    • Method and system for prospective gating using multiple inputs
    • 使用多种投入的前瞻性门控的方法和系统
    • US08064983B2
    • 2011-11-22
    • US10723716
    • 2003-11-26
    • Prathyusha K. SallaGopal B. AvinashCherik Bulkes
    • Prathyusha K. SallaGopal B. AvinashCherik Bulkes
    • A61B5/05
    • A61B6/541A61B5/0037A61B5/04A61B5/055A61B5/1107A61B5/113A61B5/721A61B5/7289A61B5/7292A61B6/5288
    • One or more techniques are provided for determining the overall motion of an organ of interest relative to a viewer or imager. Motion data is acquired for the organ of interest and/or for one or more proximate organs using sensor-based and/or image data-based techniques. The sensor-based techniques may include electrical and non-electrical techniques. The image data-based techniques may include both pre-acquisition and acquisition image data. The motion data for the organ of interest and proximate organs may be used to determine one or more quiescent periods corresponding to intervals of minimal motion for the organ of interest and the proximate organs. The one or more quiescent periods may be used to determine one or more gating points that may be used prospectively, i.e., during image acquisition. In addition, the one or more quiescent periods may be used to determine one or more motion compensation factors that may be used during processing and reconstruction of the acquired image data. The gating points and motion compensation factors may be used, separately or together, to reduce motion-related artifacts in the reconstructed images.
    • 提供了一种或多种技术来确定感兴趣的器官相对于观看者或成像器的整体运动。 使用基于传感器和/或图像数据的技术为感兴趣的器官和/或对于一个或多个近端器官获取运动数据。 基于传感器的技术可以包括电气和非电气技术。 基于图像数据的技术可以包括预采集和采集图像数据。 感兴趣的器官和邻近器官的运动数据可用于确定对应于感兴趣器官和最近器官的最小运动的间隔的一个或多个静止期。 可以使用一个或多个静止周期来确定可以预期使用的即一个图像采集期间的一个或多个门控点。 此外,一个或多个静止周期可以用于确定在所获取的图像数据的处理和重建期间可以使用的一个或多个运动补偿因子。 门控点和运动补偿因子可以单独地或一起使用以减少重建图像中的运动相关假象。
    • 5. 发明授权
    • Method and system for retrospective gating using multiple inputs
    • 使用多个输入回溯门控的方法和系统
    • US08285359B2
    • 2012-10-09
    • US10723894
    • 2003-11-26
    • Prathyusha K. SallaGopal B. AvinashCherik Bulkes
    • Prathyusha K. SallaGopal B. AvinashCherik Bulkes
    • A61B5/055
    • A61B6/541A61B5/0037A61B5/7289A61B5/7292A61B6/503A61B6/5288A61B8/0883A61B8/5284
    • One or more techniques are provided for determining the overall motion of an organ of interest relative to a viewer or imager. Motion data is acquired for the organ of interest and/or for one or more proximate organs using sensor-based and/or image data-based techniques. The sensor-based techniques may include electrical and non-electrical techniques. The image data-based techniques may include both pre-acquisition and acquisition image data. The motion data for the organ of interest and proximate organs may be used to determine one or more quiescent periods corresponding to intervals of minimal motion for the organ of interest and the proximate organs, which may be used to determine one or more gating points that may be used retrospectively, as well as one or more motion compensation factors that may be used to reduce motion-related artifacts during processing and reconstruction of the acquired image data.
    • 提供了一种或多种技术来确定感兴趣的器官相对于观看者或成像器的整体运动。 使用基于传感器和/或图像数据的技术为感兴趣的器官和/或对于一个或多个近端器官获取运动数据。 基于传感器的技术可以包括电气和非电气技术。 基于图像数据的技术可以包括预采集和采集图像数据。 可以使用感兴趣的器官和邻近器官的运动数据来确定对应于感兴趣的器官和邻近器官的最小运动的间隔的一个或多个静止期,其可以用于确定一个或多个选通点 追溯使用,以及可以用于在所获取的图像数据的处理和重构期间减少运动相关假象的一个或多个运动补偿因子。
    • 7. 发明授权
    • Determination of arbitrary cardiac phases using non-electrical signals
    • 使用非电信号确定任意心脏相位
    • US06771999B2
    • 2004-08-03
    • US10065961
    • 2002-12-04
    • Prathyusha K. SallaGopal B. Avinash
    • Prathyusha K. SallaGopal B. Avinash
    • A61B5055
    • A61B6/541A61B5/055A61B5/1107A61B5/721A61B5/7267A61B5/7285A61B6/5217A61B8/543
    • A method, storage medium, and system for selecting an optimal trigger point in a cardiac cycle includes providing an input signal including non-electrical cardiac related data, analyzing the input signal to detect candidate features, sorting through the candidate features to select optimal features, and selecting an optimal trigger point. A method, storage medium, and system of selecting an arbitrary cardiac phase for cardiac gating includes identifying a trigger point identifying onset of a systole or diastole phase on a signal, the trigger point existing at time t1, specifying a time &dgr; t before the trigger point and extending from a time t0 to a time t1, wherein time t0 is earlier than time t1, and selecting a time interval T over which an image will be reconstructed, wherein the time interval T extends from time t0 to a time t2, wherein time t2 is later than time t0.
    • 一种用于在心动周期中选择最佳触发点的方法,存储介质和系统包括提供包括非电心脏相关数据的输入信号,分析输入信号以检测候选特征,通过候选特征排序以选择最佳特征, 并选择最佳触发点。 选择用于心脏门控的任意心脏期的方法,存储介质和系统包括识别识别信号上的收缩期或舒张期开始的触发点,触发点在时间t1存在触发点,指定在触发之前的时间增量t 并且从时间t0延伸到时间t1,其中时间t0早于时间t1,并且选择将重构图像的时间间隔T,其中时间间隔T从时间t0延伸到时间t2,其中 时间t2比时间t0晚。
    • 10. 发明授权
    • Method and system for composite gating using multiple inputs
    • 多输入复合门控方法与系统
    • US07756565B2
    • 2010-07-13
    • US10723857
    • 2003-11-26
    • Prathyusha K. SallaGopal B. AvinashCherik Bulkes
    • Prathyusha K. SallaGopal B. AvinashCherik Bulkes
    • A61B5/05
    • A61B6/541A61B5/0037A61B5/7285A61B5/7289A61B5/7292A61B6/503G01R33/5673
    • One or more techniques are provided for determining the overall motion of an organ of interest relative to a viewer or imager. Motion data is acquired for the organ of interest and/or for one or more proximate organs using sensor-based and/or image data-based techniques. The sensor-based techniques may include electrical and non-electrical techniques. The image data-based techniques may include both pre-acquisition and acquisition image data. The motion data for the organ of interest and proximate organs may be used to determine one or more quiescent periods corresponding to intervals of minimal motion for the organ of interest and the proximate organs. The one or more quiescent periods may be used to determine one or more gating points that may be used prospectively, i.e., during image acquisition, and retrospectively, i.e., after image acquisition. In addition, the one or more quiescent periods may be used to determine one or more motion compensation factors that may be used during processing and reconstruction of the acquired image data. The gating points and motion compensation factors may be used, separately or together, to reduce motion-related artifacts in the reconstructed images.
    • 提供了一种或多种技术来确定感兴趣的器官相对于观看者或成像器的整体运动。 使用基于传感器和/或图像数据的技术为感兴趣的器官和/或对于一个或多个近端器官获取运动数据。 基于传感器的技术可以包括电气和非电气技术。 基于图像数据的技术可以包括预采集和采集图像数据。 感兴趣的器官和邻近器官的运动数据可用于确定对应于感兴趣器官和最近器官的最小运动的间隔的一个或多个静止期。 可以使用一个或多个静止周期来确定可以预期使用的即一个或多个选通点,即,在图像采集期间,以及追溯地,即在图像采集之后。 此外,一个或多个静止周期可以用于确定在所获取的图像数据的处理和重建期间可以使用的一个或多个运动补偿因子。 门控点和运动补偿因子可以单独地或一起使用以减少重建图像中的运动相关假象。