公开(公告)号：US5865750A

公开(公告)日：1999-02-02

申请号：US852699

申请日：1997-05-07

申请人： William Thomas Hatfield ,  Todd Michael Tillman ,  Michael John Harsh ,  David John Muzilla ,  Anne Lindsay Hall ,  Mir Said Seyed-Bolorforosh ,  Michael J. Washburn ,  David D. Becker

发明人： William Thomas Hatfield ,  Todd Michael Tillman ,  Michael John Harsh ,  David John Muzilla ,  Anne Lindsay Hall ,  Mir Said Seyed-Bolorforosh ,  Michael J. Washburn ,  David D. Becker

IPC分类号： A61B8/06 ,  A61B8/08 ,  G03B42/06 ,  G06T15/08 ,  A61B8/00

CPC分类号： G03B42/06 ,  A61B8/065 ,  G06T15/08 ,  A61B8/08 ,  A61B8/488 ,  Y10S128/916

摘要： A method and an apparatus for three-dimensional imaging of ultrasound data by constructing projections of data from a volume of interest. An ultrasound scanner collects B-mode or color flow images in a cine memory, i.e., for a multiplicity of slices. A multi-row transducer array having a uniform elevation beamwidth is used to provide reduced slice thickness. The data from a respective region of interest for each of a multiplicity of stored slices is sent to a master controller, such data forming a volume of interest. The master controller performs an algorithm that projects the data in the volume of interest onto a plurality of rotated image planes using a ray-casting technique. The data for each projection is stored in a separate frame in the cine memory. These reconstructed frames are then displayed selectively by the system operator. Segmentation of three-dimensional projection images is enhanced by decreasing the thickness and increasing the resolution (i.e., decreasing the point spread function) of the two-dimensional slices from which the projections are derived. The slice thickness is decreased by increasing the elevational focus of the beam. The two-dimensional resolution is increased by opening the aperture, i.e., decreasing the f-number, and by increasing the band-width.

摘要翻译： 一种用于通过构建来自感兴趣体积的数据的投影的超声数据的三维成像的方法和装置。 超声波扫描仪在电影存储器中收集B模式或彩色流图像，即多个切片。 使用具有均匀的仰角波束宽度的多行换能器阵列来提供减小的切片厚度。 将多个存储的片中的每一个的相关感兴趣区域的数据发送到主控制器，这样的数据形成感兴趣的体积。 主控制器执行使用光线投射技术将感兴趣体积中的数据投影到多个旋转图像平面上的算法。 每个投影的数据存储在电影存储器中的单独帧中。 这些重建的帧然后由系统操作员选择性地显示。 三维投影图像的分割通过减小厚度并增加从其导出投影的二维切片的分辨率（即减小点扩散函数）来增强。 通过增加光束的高程聚焦来减小切片厚度。 通过打开孔径即减小f值并通过增加带宽来增加二维分辨率。