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1. 发明授权

US5617863A Ultrasonic diagnostic image scanning techniques 失效
标题翻译：超声诊断图像扫描技术
公开(公告)号：US5617863A
公开(公告)日：1997-04-08
申请号：US489668
申请日：1995-06-12
申请人： David N. Roundhill , Mikhail Starosta , David Rust , Clifford R. Cooley
发明人： David N. Roundhill , Mikhail Starosta , David Rust , Clifford R. Cooley
IPC分类号： G01B17/00 , A61B8/00 , G01B17/06 , G01N29/06 , G01S7/52 , G01S15/89
CPC分类号： G01S7/52085 , G01S7/52047 , G01S7/52063 , G01S15/8918 , G01S15/8979
摘要： A technique for scanning an image field with adjacent beams of ultrasonic energy is provided in which initially transmitted beams are transmitted along beam directions at the lateral sides of the image field. Subsequent beams are alternately transmitted on either side of the initially transmitted beams and at lateral locations which converge toward the center of the image field until the full image field has been scanned. In an alternate embodiment initially transmitted beams are transmitted on one side of the center of the image field, subsequent beams diverge from the locations of the initially transmitted beams, and concluding beams laterally converge at a location on the other side of the center of the image field.
摘要翻译：提供了一种用于用相邻超声能量波束扫描图像场的技术，其中初始透射的光束沿着图像场的侧面处的波束方向传输。随后的光束在最初发射的光束的两侧和在朝向图像场的中心会聚的横向位置处交替传输，直到完整的图像场被扫描。在替代实施例中，最初发射的波束在图像场的中心的一侧被传输，随后的波束从最初发射的波束的位置发散，并且结束波束横向会聚在图像中心另一侧的位置领域。

2. 发明授权

US5438994A Ultrasonic diagnostic image scanning 失效
标题翻译：超声诊断图像扫描
公开(公告)号：US5438994A
公开(公告)日：1995-08-08
申请号：US319757
申请日：1994-10-07
申请人： Mikhail Starosta , David N. Roundhill , David W. Rust
发明人： Mikhail Starosta , David N. Roundhill , David W. Rust
IPC分类号： G01B17/00 , A61B8/00 , G01B17/06 , G01N29/06 , G01S7/52 , G01S15/89
CPC分类号： G01S7/52085 , G01S7/52047 , G01S7/52063 , G01S15/8918 , G01S15/8979
摘要： A technique for scanning an image field with adjacent beams of ultrasonic energy is provided in which initially transmitted beams are transmitted along beam directions down the center of the image field. Subsequent beams are alternately transmitted on either side of the initially transmitted beams and at increasing lateral locations in said field with respect to the locations of the initially transmitted beams until the full image field has been scanned. In a preferred embodiment a waiting period is added to the pulse repetition interval of each transmission to allow time for multipath reflections to dissipate. The waiting periods are longer during initial transmissions in the vicinity of the center of the image field, and decline as beams are transmitted at increasing lateral locations of the field. The scanning technique provides a reduction in multipath reflection artifacts while maintaining a smoothly varying or uniform temporal disparity in the transmission times of adjacent beams.
摘要翻译：提供了一种用于以相邻的超声能量波束扫描图像场的技术，其中最初发射的波束沿着沿着图像场的中心的波束方向传输。随后的光束在最初发射的光束的任一侧上以及相对于最初发射的光束的位置在所述场中的增加的横向位置交替传输，直到完整的图像场已被扫描。在优选实施例中，等待周期被添加到每个传输的脉冲重复间隔，以允许多径反射消失的时间。在图像中心附近的初始传输期间的等待时间更长，并且随着在场的增加的横向位置处传输波束而下降。扫描技术提供多径反射伪像的减少，同时保持相邻光束的透射时间中的平滑变化或均匀的时间差异。

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