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    • 3. 发明授权
    • Ultrasound imaging with real time 3D image reconstruction and
visualization
    • 超声成像与实时3D图像重建和可视化
    • US5787889A
    • 1998-08-04
    • US804054
    • 1997-02-21
    • Warren EdwardsChristian DeforgeYongmin Kim
    • Warren EdwardsChristian DeforgeYongmin Kim
    • A61B8/06A61B8/08A61B8/14G01S7/52G01S15/89A61B8/00
    • A61B8/483A61B8/14G01S15/8993G01S7/52044A61B8/06A61B8/08A61B8/13G01S7/52034Y10S128/916
    • A 3D image is generated in real-time on an ultrasound medical imaging system which performs acquisition, volume reconstruction, and image visualization tasks using multiple processors. The acquisition task includes deriving position and orientation indicators for each gathered image frame. Volume reconstruction includes defining a reference coordinate system within which each image frame in a sequence of image frames is registered. The reference coordinate system is the coordinate system for a 3D volume encompassing the image planes to be used in the 3D image. The first image frame is used to define the reference coordinate system. As each image plane is registered, a 2D projection of the incremental volume is displayed. A shear-warp factorization process is used to derive a 2D projection for a rotated volume. A viewing transformation matrix is factorized into a 3D shear which is parallel to slices of the reference volume. A 2D warp then is implemented to produce the projection of the rotated volume.
    • 在使用多个处理器执行采集,体积重建和图像可视化任务的超声医学成像系统上实时生成3D图像。 采集任务包括为每个聚集的图像帧导出位置和方向指示符。 音量重建包括定义参考坐标系,其中注册了图像帧序列中的每个图像帧。 参考坐标系是包含3D图像中使用的图像平面的3D体积的坐标系。 第一个图像帧用于定义参考坐标系。 当每个图像平面被注册时,显示增量体积的2D投影。 剪切折变分解过程用于导出旋转体积的2D投影。 观察变换矩阵被分解成与参考体积的切片平行的3D剪切。 然后实现2D翘曲以产生旋转体积的投影。