公开(公告)号：US5462057A

公开(公告)日：1995-10-31

申请号：US287762

申请日：1994-08-09

申请人： Thomas J. Hunt ,  Benjamin M. Herrick ,  Kimberly K. Robertson ,  Karl E. Thiele ,  J. Mark Ziel

发明人： Thomas J. Hunt ,  Benjamin M. Herrick ,  Kimberly K. Robertson ,  Karl E. Thiele ,  J. Mark Ziel

IPC分类号： A61B8/00 ,  G01S7/52 ,  G01S15/89 ,  G10K11/34

CPC分类号： G01S7/52095 ,  G01S15/8977 ,  G01S7/52046 ,  G10K11/341

摘要： In a phased array ultrasound imaging system, a high quality image is obtained by a combination of line splicing and parallel receive beamforming. Two transmit pulses, one focused in the near field and one focused in the far field, are transmitted sequentially at each steering angle. The transmitted ultrasound energy is preferably focused both in azimuth and in elevation. Ultrasound echos are simultaneously received along two receive scan lines spaced angularly on opposite sides of each transmit scan line. Signals received in response to the near field and far field transmit pulses are spliced together to provide signals that represent a high quality image throughout the region of interest. Image artifacts are reduced by blending the received signals near the splice between the near field and the far field, by dynamically steering the receive scan lines to reduce the effect of line warping, and by weighted averaging of adjacent scan lines.

摘要翻译： 在相控阵超声成像系统中，通过线拼接和并行接收波束形成的组合获得高质量图像。 两个发射脉冲，一个聚焦在近场中，一个聚焦在远场中，在每个转向角顺序传输。 发射的超声能量优选地以方位角和仰角聚焦。 超声回波同时沿两个接收扫描线接收，每条扫描线在每个发射扫描线的相对侧成角度地间隔开。 响应于近场和远场发射脉冲而接收的信号被拼接在一起，以提供表示感兴趣区域中的高质量图像的信号。 通过将近场和远场之间的拼接附近的接收信号进行混合，通过动态地控制接收扫描线以减少线翘曲的影响以及通过相邻扫描线的加权平均来减少图像伪影。

公开(公告)号：US06224557B1

公开(公告)日：2001-05-01

申请号：US09497579

申请日：2000-02-03

申请人： J Mark Ziel ,  Karl E Thiele

发明人： J Mark Ziel ,  Karl E Thiele

IPC分类号： A61B800

CPC分类号： G01S15/8981 ,  A61B8/06 ,  A61B8/13 ,  G01S7/52038

摘要： The method of the invention controls an ultrasound system that implements a clutter filter, to derive parameters such as blood flow velocity, echo power and/or echo amplitude data from an anatomical region of interest (ROI) and into which a contrast agent has been introduced. The method initially transmits an ensemble of N ultrasound beams along a common azimuth and elevation into the ROI to cause destruction of the contrast agent lying along the azimuth. Estimated wall motion velocity data is then derived for the tissue wall region through use of selected echo signal data derived from a subset of the N ultrasound beams of the ensemble, the subset excluding echo signal data from a first M of the N ultrasound beams or any subset of the N ultrasound beams. The clutter filter is then adjusted to attenuate selected echo signal data returned from the ROI that exhibits the wall motion velocity data. The wall motion data derived from the N ultrasound beams or a subset thereof is processed by the adjusted clutter filter to derive echo data that is better indicative of echo signal returns from the contrast agent or blood flow and is less indicative of wall motion effects.

摘要翻译： 本发明的方法控制实现杂波滤波器的超声系统，从感兴趣的解剖区域（ROI）导出诸如血流速度，回波功率和/或回波幅度数据的参数，并且引入了造影剂 。 该方法首先将N个超声波束沿着共同的方位角和高度传播到ROI中，以引起沿着方位角的造影剂的破坏。 然后通过使用从该组合的N个超声波束的子集导出的所选择的回波信号数据，针对组织壁区域导出估计的壁运动速度数据，该子集不包括来自N个超声波束的第一个M的任何 N个超声波束的子集。 然后调整杂波滤波器以衰减从呈现壁运动速度数据的ROI返回的所选择的回波信号数据。 从N个超声波束或其子集导出的壁面运动数据由调整的杂波滤波器处理，以导出更好地指示来自造影剂或血流的回波信号返回的回波数据，并且较少表示壁运动效应。