Portable 3D ultrasound system
    1.
    发明授权
    Portable 3D ultrasound system 有权
    便携式3D超声系统

    公开(公告)号:US07141020B2

    公开(公告)日:2006-11-28

    申请号:US10080160

    申请日:2002-02-20

    IPC分类号: A61B8/02

    摘要: A portable 3D ultrasound device having an ultrasound transducer. The ultrasound transducer includes a transducer array with a plurality of transducer elements arranged in a plurality of dimensions, the transducer array including an emitter to emit ultrasound energy, a receiver to receive responses generated in accordance with the ultrasound energy, a plurality of sub-array beamformers, a signal processor to convert the generated responses into a 3D ultrasound image and a display unit to display the 3D ultrasound image.

    摘要翻译: 一种具有超声换能器的便携式3D超声装置。 所述超声换能器包括具有以多个尺寸布置的多个换能器元件的换能器阵列,所述换能器阵列包括发射超声能量的发射器,用于接收根据所述超声能量产生的响应的接收器,多个子阵列 波束形成器,用于将生成的响应转换为3D超声波图像的信号处理器和显示单元以显示3D超声波图像。

    Method of forming integral transducer and impedance matching layers
    2.
    发明授权
    Method of forming integral transducer and impedance matching layers 失效
    形成积分换能器和阻抗匹配层的方法

    公开(公告)号:US5553035A

    公开(公告)日:1996-09-03

    申请号:US327167

    申请日:1994-10-21

    CPC分类号: G10K11/02 B06B1/0622

    摘要: A method of forming a transducer device having integral transducer and impedance matching portions includes forming grooves partially through a thickness of a piezoelectric member. A groove volume fraction at the impedance matching portion controls the electrical impedance. The impedance matching portion may be at either or both of the front and rear surfaces of the transducer portion, which generates acoustic wave energy in response to application of a drive signal. The drive signal is introduced by electrodes. In one embodiment, the electrode at the impedance matching portion extends into the grooves, but preferably a filler material is selected and deposited to allow use of a planar electrode. An alternative embodiment to fabricating the transducer device is to assemble piezoelectric material. For example, an integral transducer and impedance matching portions may be formed by using molding techniques or by stacking dimensionally different thin piezoelectric layers. The acoustic impedance of the matching layer can be varied spatially to provide apodization of a radiating aperture. Moreover, a graded impedance matching layer can be formed, resulting in a tapered variation in the acoustic impedance of the matching layer.

    摘要翻译: 形成具有整体换能器和阻抗匹配部分的换能器装置的方法包括部分地通过压电元件的厚度形成凹槽。 阻抗匹配部分的槽体积分数控制电阻抗。 阻抗匹配部分可以在换能器部分的前表面和后表面中的一个或两个处,其响应于驱动信号的应用而产生声波能量。 驱动信号由电极引入。 在一个实施例中,阻抗匹配部分处的电极延伸到沟槽中,但是优选选择并沉积填充材料以允许使用平面电极。 制造换能器装置的替代实施例是组装压电材料。 例如,可以通过使用模制技术或通过堆叠尺寸不同的薄压电层来形成整体式换能器和阻抗匹配部分。 匹配层的声阻抗可以在空间上变化,以提供辐射孔的变迹。 此外,可以形成渐变阻抗匹配层,导致匹配层的声阻抗的锥形变化。