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    Ultrasonic imaging system with interpolated scan lines
    4.
    发明公开
    Ultrasonic imaging system with interpolated scan lines 失效
    Ultraschallabbildungssystem mit Interpolation von Abtastlinien。

    公开(公告)号：EP0661554A1

    公开(公告)日：1995-07-05

    申请号：EP94309910.1

    申请日：1994-12-29

    申请人： ADVANCED TECHNOLOGY LABORATORIES, INC.

    发明人： Robinson, Brent Stephen ,  Cooley, Clifford R. ,  Hwang, Juin-Jet ,  Entrekin, Robert R.

    IPC分类号： G01S7/52

    CPC分类号： G01S7/52085 ,  G01S7/52044 ,  G01S7/52077 ,  G01S15/8977

    摘要： An ultrasonic diagnostic imaging system is provided which scans an image region to receive a plurality of spatially arranged lines of ultrasonic image information signals. These ultrasonic line information signals are used in an interpolater to interpolate one or more lines which are spatially interlineated between each pair of spatially adjoining received lines. These interpolated lines are produced using either the received RF or demodulated IF ultrasonic image information signals. The interpolated lines are produced prior to scan conversion, and preferably prior to nonlinear processing such as detection or log compression to reduce spatial aliasing artifacts. In one preferred embodiment the interpolater comprises a transversal filter of four taps which is responsive to received line information signals from a common range or depth. In a second embodiment the interpolater is adaptively responsive to motion to select samples for interpolation which would be spatially at the same range in the absence of motional effects.

    摘要翻译： 超声波诊断成像系统扫描图像区域以接收多个空间排列的超声波图像信息信号线。 在内插器中使用超声线信息信号来插入在每对空间相邻的接收线之间在空间上相互交错的一条或多条线。 使用所接收的RF或解调的IF超声波图像信息信号产生插入的线。 在扫描转换之前，优选地在非线性处理之前，例如检测或对数压缩之前产生插入的线，以减少空间混叠伪像。 预插入器包括四个抽头的横向滤波器，其响应于来自公共范围或深度的接收线路信息信号，或者内插器可以自适应地响应运动以选择样本进行插值，空间上将在不存在 运动效应。

    Scan conversion apparatus
    6.
    发明公开
    Scan conversion apparatus 失效
    设备扫描转换。

    公开(公告)号：EP0158920A1

    公开(公告)日：1985-10-23

    申请号：EP85103946.1

    申请日：1985-04-01

    申请人： Advanced Technology Laboratories, Inc.

    发明人： Blaker, David M. ,  Hwang, Juin-Jet ,  Zobkiw, Christopher P.

    IPC分类号： G01S7/52 ,  G01S7/62 ,  G06F15/62

    CPC分类号： G06F17/175 ,  G01S7/52044 ,  G01S7/52063 ,  G01S15/8993 ,  G06T11/40

    摘要： An improved scan converter (100) for converting received echo signals representative of the amplitude of ultrasound energy returning grom sampled points along a plurality of spaced apart paths distributed in an image space into signals to be displayed as display pixels in a raster scan display system (150). The scan converter includes a scan data memory (120) for storing the received echo signals in quadrants of the scan data memory. Each quadrant is associated with even and odd numbered paths and sample row combinations. Sample rows are related to sample points along the spaced apart paths. The scan converter further includes a circuit (1000) for determining a gray scale value to be assigned to each selected display pixel based on a predetermined combination of four received echo signals adjacent the selected display pixel and chosen from the quadrants of the scan data memory. The improved scan converter is capable of operation in both linear and sector scan modes, and, when in the sector mode, over 90° and 180° sectors.

    Ultrasonic diagnostic imaging with contrast agents
    8.
    发明公开
    Ultrasonic diagnostic imaging with contrast agents 失效
    Ultraschall-Bilderzeugung zur Diagnostik mittels Kontrastmitteln

    公开(公告)号：EP0770352A1

    公开(公告)日：1997-05-02

    申请号：EP96307359.8

    申请日：1996-10-09

    申请人： ADVANCED TECHNOLOGY LABORATORIES, INC.

    发明人： Powers, Jeffry Earl ,  Bruce, Matthew ,  Averkiou, Michalakis ,  Hwang, Juin-Jet

    IPC分类号： A61B8/00

    CPC分类号： A61B8/543 ,  A61B8/06 ,  A61B8/08 ,  A61B8/13 ,  A61B8/463 ,  A61B8/481 ,  A61B8/488 ,  A61K49/223 ,  G01S7/52038 ,  G01S7/52039 ,  G01S7/52041 ,  G01S15/8963

    摘要： Apparatus and methods are disclosed for the detection and imaging of ultrasonic contrast agents. Ultrasonic apparatus is provided for coherent imaging of ultrasonic contrast agents, and for detecting harmonic contrast agents. The inventive apparatus includes a dual display for simultaneously viewing a real time image which displays the location of the contrast agent and a triggered contrast image. Methods of contrast agent detection and imaging include the measurement of perfusion rate characteristics, multizone contrast imaging, multifrequency contrast imaging, tissue perfusion display, high PRF contrast image artifact elimination, and alternate polarity acquisition of nonlinear contrast effects.

    摘要翻译： 公开了用于超声造影剂的检测和成像的装置和方法。 提供超声波设备用于超声造影剂的相干成像，以及用于检测谐波造影剂。 本发明的装置包括双显示器，用于同时观看显示造影剂的位置的实时图像和触发的对比度图像。 造影剂检测和成像的方法包括灌注速率特征，多区域造影成像，多频对比成像，组织灌注显示，高PRF对比度图像伪像消除以及非线性对比效应的交替极性获取的测量。