Array type multi-frequency-point ultrasonic bone mineral density measuring technology

Abstract

The invention provides an array type multi-frequency-point ultrasonic bone mineral density measuring technology. The technology is characterized by comprising an array transducer, a data acquisition system hardware design, a guided wave separation algorithm and an artificial neural network classifier. The transmitting end of the transducer converts an excitation electric signal into an ultrasonicsignal, and the ultrasonic signal is received by the receiving end. Due to the adoption of the array structure, the influence of soft tissue on measurement precision can be effectively avoided. The data acquisition system is responsible for providing excitation for the transducer and sampling the data, and the collected signal is transmitted to an upper computer through a USB3.0 interface. The guided wave separation algorithm is adopted by the upper computer to separate out curved waves related to the bone mineral density. Parameters extracted through the above process serve as input data, andthe classifier is trained through a machine learning method, so that parameters for comprehensively reflecting the bone quality condition of long bones of the human body are obtained.

Description

technical field [0001] The invention relates to the problem of measuring human bone density. The currently widely used DualEnergy X-ray Absorptiometry (DEXA) to measure bone density has hidden damage to the human body; axial ultrasonic measurement based on the principle of ultrasonic first arrival signal (FAS) The technology is not sensitive to cortical bone thickness and endosteal region, and cannot evaluate the bone properties within the entire long bone cortical bone thickness; the quantitative measurement and evaluation technology of bone quality based on the principle of guided wave (Guided Wave) cannot eliminate the influence of soft tissue. The present invention combines FAS technology and ultrasonic guided wave technology to propose an array type multi-frequency point bone condition detection system. Background technique [0002] As the population tends to age, many negative problems follow one after another, osteoporosis and its complicated fractures is one of them...

AI Technical Summary

Problems solved by technology

However, these two techniques have their own shortcomings: the axial transmission technique based on the FAS principle has been commercialized, but it is not sensitive to the thickness of the cortical bone and the endosteal region, and cannot evaluate the characteristics of the inner bone of the entire l...

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