Study on temperature distribution experimental measurement methods for focused ultrasound field
A flexible membrane temperature array sensor and measurement method is developed to solve the problems of tedious operation and complex conditions in the measurement of temperature distribution of focused ultrasound in the medical field.The temperature sensor array was developed based on polyethylene polymer-based film,using PTC effect to realize temperature measurement.A constant temperature water bath calibration system was built based on the multi-channel fast acquisition system,and focused ultrasound temperature distribution experiment is implemented in bionic phantom.Calibration results show that the sensor can cover a temperature measuring range of 6 mm,the spatial resolution is 0.4 mm,and the measurement repeatability is less than 2.4%.Compared with the results of simulation and thermocouple measurement,the maximum focus temperature deviation is within 1.25℃,which means that the measuring method has high-precision and simple operation.
array sensorfocused ultrasoundtemperature distributionpolymer base membrane
万方数据
维普
