Ultrasonic real time harmless human body temperature-measuring device and temperature-measuring method

Abstract

The present invention relates to an ultrasonic real-time nondestructive body temperature measuring device and the temperature measurement method; the present invention establishes a relationship model of the temperature increment and the echo signal in the time domain or the frequency domain based on that the thermal characteristics of the human tissues and the ultrasound beams which pass through the human tissues thereof have better correlation with the temperature increment on the beam path during the slow change, furthermore, the present invention uses the numerical calculation method (such as, finite element / finite difference method) which is based on the nonlinear medical ultrasonic field to carry out the real-time dynamic calibration of the thermal coefficient of the deep tissue by establishing a Pennes biological heat conduction equation (BHTE) in a human structural model, so as to solve the difficulties that the characteristic parameters of the tissue temperature are too changeable ; the present invention uses the combination method of the numerical calculation and the ultrasonic detection to eliminate the problem of the heat-acoustic lens and adopts the fusion imaging method of the temperature information and the tissue structure information to visually display the temperature distribution and the structure distribution in the body.

Description

technical field [0001] The invention relates to a temperature measuring device and method, in particular to an ultrasonic real-time non-destructive human body temperature measuring device and a temperature measuring method. Background technique [0002] At present, there are mainly two types of temperature measurement methods in the human body: lossy temperature measurement and nondestructive temperature measurement. [0003] The destructive temperature measurement method is to insert a temperature sensor such as a thermocouple into the part to be measured for direct measurement. This measurement method is greatly disturbed by the outside world, causing serious damage to the tissue, and only the temperature of the detection point is obtained, and it is difficult to measure the actual temperature. distributed. Therefore, the destructive temperature measurement technology is very limited in actual clinical application, and it will also cause the spread of cancerous tissue in ...

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned ultrasonic temperature measurement methods have achieved some beneficial results in the experimental simulation method, but they are also facing great problems to be solved, such as the thermo-acoustic lens effect in the echo time-shift method. cannot be completely eliminated

Images