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    Ultrasonic transducer and method for harmonic imaging
    6.
    发明授权
    Ultrasonic transducer and method for harmonic imaging 失效
    超声波换能器和谐波成像方法

    公开(公告)号：US6027448A

    公开(公告)日：2000-02-22

    申请号：US103320

    申请日：1998-06-23

    申请人： John A. Hossack ,  Christopher R. Cole ,  Jian-Hua Mo

    发明人： John A. Hossack ,  Christopher R. Cole ,  Jian-Hua Mo

    IPC分类号： G01N29/24 ,  G01N29/26 ,  G01N29/34 ,  G01N29/40 ,  G01N29/42 ,  G01N29/46 ,  G01S7/52 ,  G01S15/89 ,  G10K11/34 ,  A61B8/00

    CPC分类号： G01S7/52039 ,  G01N29/2456 ,  G01N29/2462 ,  G01N29/262 ,  G01N29/348 ,  G01N29/40 ,  G01N29/42 ,  G01N29/46 ,  G01S15/895 ,  G01S7/52034 ,  G01S7/52036 ,  G01S7/52038 ,  G01S7/52046 ,  G01S7/52047 ,  G10K11/341 ,  G10K11/343 ,  G01N2291/012 ,  G01N2291/015 ,  G01N2291/106

    摘要： A method and system for ultrasonically imaging a target during an imaging session. The method includes the steps of transmitting ultrasonic energy at a fundamental frequency into the target from a plurality of transducer elements wherein each transducer element has a non-planar surface and shape that either focuses different frequency components at different focal points along a focal line or focuses common frequency components at different focal points along a focal line; and selectively receiving reflected ultrasonic echo information in the vicinity of a harmonic frequency while filtering out ultrasonic echo information at the fundamental frequency. The ultrasonic imaging system includes an ultrasonic transducer array comprising a plurality of transducer elements wherein each element has a non-planar surface in an elevation direction, and each transducer element has a shape that focuses different frequency components at different focal points along a focal line; transmit circuitry coupled to the transducer array, said transmit circuitry operative to transmit energy at a fundamental frequency; and receive circuitry coupled to the transducer array for selectively receiving ultrasonic echo information in the vicinity of a harmonic frequency from the target while filtering out ultrasonic echo information at the fundamental frequency.

    摘要翻译： 一种用于在成像会话期间对目标进行超声成像的方法和系统。 该方法包括以下步骤：从多个换能器元件将基本频率的超声能量发射到目标中，其中每个换能器元件具有非平面表面和形状，其可以沿着焦线或聚焦在不同焦点处聚焦不同频率分量 沿着焦线的不同焦点处的共频分量; 并选择性地接收谐波频率附近的反射超声回波信息，同时滤除基频处的超声波回波信息。 超声波成像系统包括包括多个换能器元件的超声波换能器阵列，其中每个元件在高度方向具有非平面表面，并且每个换能器元件具有沿着焦线在不同焦点处聚焦不同频率分量的形状; 耦合到所述换能器阵列的发射电路，所述发射电路可操作地以基频传输能量; 以及接收耦合到所述换能器阵列的电路，用于在从所述目标的谐波频率附近选择性地接收超声波回波信息，同时滤除在所述基频处的超声波回波信息。