Research On Measurement System Of Subcutaneous Adipose Tissue Based On Ultrasound

As people’s living standards increase year by year, the number of domestic obesity increases every year, people’s physical and mental health is threatened, reduced quality of life. Ultrasound pulse-echo method has many advantages, such as simple principle, hardware making low-cost, easy to be processed echo signals and so on. In order to made people understand the impact of their obesity on health status more objective, ultrasound pulse-echo measurement principle had been adopted, the overall program of ultrasound subcutaneous fat thickness measurement system had been designed, hardware circuit had been designed and related experiments that measuring the thickness of subcutaneous fat of specific parts of the body had been designed.The main research works of this thesis were:The basic principle of ultrasound measurement of the thickness of subcutaneous fat had been analyzed. Human biological characteristics of superficial soft tissue had been analyzed. Ultrasound wave propagation characteristics in superficial soft tissue had been analyzed. Measurement method of Ultrasound subcutaneous fat thickness measurement system was pulse-echo method had been determined.Hardware circuit had been designed and debugged. Hardware circuit included ultrasound pulse transmitter module, the echo signal reception preprocessing module, echo processing controls the display module and the ultrasound probe.The corresponding software had been developed. Software chose ICCAVR programming tool based on the C language as a development platform. System program consisted of the main function file, the function declaration file and the LCD function file, and used some algorithms to process and display the results such as screening algorithm and Trimmed Mean algorithm.Related experiments had been designed. Fat model based on ultrasound phantom, porcine subcutaneous adipose tissue sample in vitro and human upper arm subcutaneous fat had been measured by ultrasound subcutaneous fat thickness measurement system. The measurement results and measurement values obtained by other means were compared. The results were that measurements of the ultrasound subcutaneous fat thickness measurement system achieved the expected targets, and stability and accuracy of the system achieved a higher level.