Timing controller for combined photoacoustic and ultrasound imager

Timing controller for combined photoacoustic and ultrasound imager

  • CN 101,472,520 B
  • Filed: 04/11/2007
  • Issued: 06/03/2015
  • Est. Priority Date: 06/23/2006
  • Status: Active Grant
First Claim
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1. an imaging system, comprising:

  • Irradiation system, it is suitable for irradiating sample to generate photoacoustic signal in the sample;

    Transducer, it is independent of described irradiation system and comprise array of piezoelectric elements, and described transducer is suitable for;

    I () launches ultrasound wave;

    (ii) ultrasonic signal generated by described ultrasound wave is received;

    And (iii) receives the photoacoustic signal generated by described irradiation system;

    Receive beamformer, it is suitable for storing the described ultrasonic signal generated by described ultrasound wave and the described photoacoustic signal generated by described irradiation system via multiplexer, wherein, described ultrasonic signal comprises pulse-echo ultrasound signals, described Beam-former is suitable for the time delay that applies to utilize hyperacoustic round trip cycle to calculate to described pulse-echo ultrasound signals and sues for peace to the pulse-echo ultrasound signals through time delay, and described Beam-former is suitable for applying correspond to from described sample to the time delay of the one-way propagation time of described transducer and sue for peace to the photoacoustic signal through time delay to described photoacoustic signal,Timing control unit, its be suitable for;

    (i) is suitable at least the first clock of rise time reference signal, (ii) described irradiation system, (iii) be suitable for carrying out via described multiplexer and described transducer the transmit beamformer that communicates, and (iv) described receive beamformer communicatesWherein, described timing control unit is suitable for (i) and controls the sequential of described photoacoustic signal and described hyperacoustic sequential, described ultrasound wave is launched between described photoacoustic signal, and (ii) prevents the signal disturbing between described ultrasonic signal and described photoacoustic signal, and wherein, described timing control unit is further adapted for and generates receive beamformer control signal C, making according to the signal received is that photoacoustic signal or pulse echo signal apply the process of right type to the described signal receivedWherein, described multiplexer is suitable for promoting at described transducer, communicating between described transmit beamformer and described receive beamformer.

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