Acoustic Impedance Measurement Probe
A technology for measuring probes and acoustic impedance, which is applied in the field of ultrasonic testing, and can solve problems such as in vivo and online measurements that are difficult to use
Active Publication Date: 2015-09-30
元绪科技(北京)有限公司
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Problems solved by technology
[0003] Most of the ultrasonic probes on the market are used to emit single-frequency or dual-frequency physiotherapy ultrasonic probes. There are very few probes used for measurement, and even for acoustic impedance measurement probes. The measurement of acoustic impedance is usually carried out in the time domain. That is, the speed of sound and the density of the medium are measured separately, and the Z value is obtained by their product. This method can obtain the precise value of the medium Z, but it is generally difficult to use in vivo and online measurement
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[0012] refer to figure 1 , the acoustic impedance measurement probe includes a transmitting ultrasonic transducer 1 and a receiving ultrasonic transducer 2, and a probe fixing bracket 7; the measurement circuit includes a transmitting circuit part for controlling the transmitting ultrasonic transducer 1 to send a required signal and processing and receiving ultrasonic waves The receiving circuit of the transmitted echo signal received by the transducer 2. The entire probe is used to derive the final acoustic impedance Z-pattern.
[0013] The transmitting ultrasonic transducer 1 and the receiving ultrasonic transducer 2 are respectively fixed on two right-angled side slopes of an italic base 6 formed by a triangular solid cylinder whose bottom surface is an isosceles right-angled triangle. For the convenience of description, The generatrix of the triangular prism corresponding to the right angle is denoted as TL side, and the generatrix corresponding to the two acute angles ar...
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The invention discloses an acoustic impedance measuring probe which comprises a transmitting ultrasonic transducer (1), a receiving ultrasonic transducer (2), a measuring circuit, a base (6) and a fixing support (7). The measuring circuit comprises a central processing unit, a transmitting circuit and a receiving circuit, wherein the transmitting circuit is used for controlling the transmitting ultrasonic transducer (1) to transmit a needed signal, and the receiving circuit is used for processing a transmitting echo signal received by the receiving ultrasonic transducer (2). The base (6) is composed of triangular prismoids. The transmitting ultrasonic transducer (1) and the receiving ultrasonic transducer (2) are fixed on two oblique planes of the base (6) respectively. The measuring circuit is used for controlling the transmission and the receiving of the signal and processing the received echo signal to obtain a ratio between excitation voltage and recycling voltage, and a biological tissue acoustic impedance figure is finally obtained. The study of acoustic impedance on medical treatment application is provided with assistance.
Description
technical field [0001] The invention relates to the field of ultrasonic detection, in particular to an acoustic impedance measuring probe and a measuring method. Background technique [0002] The study of the ultrasonic properties of the surface of biological tissue is of great significance for judging the overall tissue condition. In ultrasonic diagnosis, the surface properties of the measured organ can be determined from the ultrasonic echo signal. The acoustic parameter describing the reflection characteristics of the medium is mainly the acoustic impedance Z. The difference in the acoustic impedance Z of biological tissue reflects the difference in the characteristics of the tissue, so the quantitative study of the acoustic impedance can judge the characteristics of the biological tissue. [0003] Most of the ultrasonic probes on the market are used to emit single-frequency or dual-frequency physiotherapy ultrasonic probes. There are very few probes used for measuremen...
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IPC IPC(8): A61B8/08
Inventor 陈宝明汪晓阳赵法刚解光亮汪子铮
Owner 元绪科技(北京)有限公司