PROCESS FOR ULTRASONIC PRESSURE MEASUREMENT IN A LIQUID USING MICRO-BUBBLES

摘要

In an ultrasonic process for pressure measurement in a liquid containing stabilized micro-bubbles in a system, ultrasonic pulses are irradiated into the liquid and made to interact with micro-bubbles. The amplitude and/or frequency changes of the ultrasonic signals diffused are recorded and assessed in relation to the ultrasonic pulses irradiated and/or previously received. A descriptio is given of means to mesure the blood pressure which can be used with the pressure-measurement process.