Ultrasonic diagnostic transducer array with elevation focus
    7.
    发明公开
    Ultrasonic diagnostic transducer array with elevation focus 失效
    Diagnisesultraschallwandleranordnung mit Elevationsfokus

    公开(公告)号:EP0689187A1

    公开(公告)日:1995-12-27

    申请号:EP95304427.8

    申请日:1995-06-23

    发明人: Souquet, Jacques

    IPC分类号: G10K11/32 B06B1/06

    CPC分类号: G10K11/32 B06B1/0622

    摘要: An ultrasonic diagnostic transducer array (16) is provided for providing electronic focusing in the longitudinal plane (L) and elevational (E) focusing. Elements (e₁,e₂...) of the array (16) are subdiced in the elevational direction (E) to provide subelements (1-2,2-2,3-2...) with aspect ratios varying in proportion to their distance to the central longitudinal axis of the array. Such variation affords varying electro-mechanical coupling coefficients to the subelements such that the intensity of the transmitted energy is centered about the central longitudinal axis. In a second embodiment (not represented) elements exhibit extensions in the elevational direction which vary in proportion to their displacement from the longitudinal center of the array. The extended elements are acoustically separated into subelements in the elevational direction to provide elevational focusing or spatial compounding of the transmitted acoustic energy.

    摘要翻译: 提供了一种用于在纵向平面(L)和高(E)聚焦中提供电子聚焦的超声诊断换能器阵列(16)。 阵列(16)的元素(e1,e2 ...)在高度方向(E)处被细分,以提供子元素(1-2,2-2,3-2 ...),其宽高比与 它们到阵列的中心纵轴的距离。 这种变化为子元件提供变化的机电耦合系数,使得透射能量的强度围绕中心纵向轴线居中。 在第二实施例(未示出)中,元件在高度方向表现出与其从阵列的纵向中心的位移成比例地变化的延伸。 扩展元件在高度方向上声学地分离为子元件,以提供透射声能的高度聚焦或空间复合。