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    • 4. 发明申请
    • CONTRAST DUAL FREQUENCY IMAGING
    • 对比双频成像
    • WO2005071437A1
    • 2005-08-04
    • PCT/EP2005/000668
    • 2005-01-20
    • STICHTING VOOR DE TECHNISCHE WETENSCHAPPENDE JONG, NicolaasBOUAKAZ, Ayache
    • DE JONG, NicolaasBOUAKAZ, Ayache
    • G01S15/89
    • G01S7/52022G01S7/52041G01S15/8952G01S15/8961G01S15/8963G01S15/899
    • A method and apparatus for ultrasound imaging which uses dual frequency excitation of a target. The target is simultaneously irradiated with a relatively low frequency ultrasound conditioning signal and a relatively high frequency ultrasound detection signal. The conditioning signal modulates a physical property (e.g. size) of first structures (e.g. gas bubbles) within the target, which modulation causes changes in the echo signal response of the first structures to the detection signal. A signal processor is adapted to process the received echo signals to detect the presence of the first structures by virtue of a first magnitude of detection signal echo arising from periods when the conditioning signal is in a first phase and a second, different, magnitude of detection signal echo arising from periods when the conditioning signal is in a second phase.
    • 一种用于超声成像的方法和装置,其使用目标的双频激励。 用相对较低频率的超声波调理信号和较高频率的超声波检测信号同时照射靶。 调节信号调制目标内的第一结构(例如气泡)的物理性质(例如大小),该调制使得第一结构的回波信号响应变化到检测信号。 信号处理器适于处理所接收的回波信号,借助于第一幅度的检测信号回波来检测第一结构的存在,所述检测信号回波是在调节信号处于第一阶段和第二,不同大小的检测 当调节信号处于第二阶段时产生的信号回波。
    • 7. 发明申请
    • A METHOD FOR COMPENSATING A HARMONIC COMPONENT OF AN EMITTED ULTRASOUND WAVE.
    • 一种用于补偿发射超声波的谐波分量的方法。
    • WO2009133207A1
    • 2009-11-05
    • PCT/EP2009/055355
    • 2009-05-04
    • INSERM (Institut National de la Santé et de la Recherche Médicale)BOUAKAZ, AyacheNOVELL, Anthony
    • BOUAKAZ, AyacheNOVELL, Anthony
    • G01S15/89G01S7/52
    • G01S15/8952G01S7/52038G01S7/52046
    • Method for compensating an harmonic component (Hn) of an emitted ultrasound wave (es), comprising an ultrasound transducer (10). An excitation signal (e) is generated and comprises a first signal (e1) having a first harmonic component (H1) at a first fundamental frequency (f1) and being applied to the ultrasound transducer (10) for transmitting the emitted ultrasound wave (es). The emitted ultrasound wave (es) comprises the harmonic component (Hn) at a harmonic frequency higher and natural number multiple of the first fundamental frequency. The excitation signal (e) further comprises a second signal (e2) added to the first signal (e1), comprising parameters one of which is tuned so that the harmonic component has a minimal amplitude, the parameters being at least a predetermined frequency, a predetermined amplitude, a predetermined phase with respect to the first signal (e1), and a predetermined bandwidth. The predetermined frequency is different than the harmonic frequency.
    • 用于补偿包括超声换能器(10)的发射超声波的谐波分量(Hn)的方法。 产生激励信号(e),并且包括具有第一基频(f1)的第一谐波分量(H1)的第一信号(e1)并且被施加到超声换能器(10),用于传输发射的超声波 )。 发射的超声波包括谐波频率高于第一基频的自然数倍的谐波分量(Hn)。 激励信号(e)还包括添加到第一信号(e1)的第二信号(e2),包括其中一个被调谐的参数,使得谐波分量具有最小振幅,参数至少为预定频率, 预定幅度,相对于第一信号(e1)的预定相位和预定带宽。 预定频率不同于谐波频率。