The Bone Density Detection Based on DSP and Wavelet Transform

Abstract Quantitative axial ultrasonic method has become one of the most potential methods for measuring bone mineral density (BMD) because of its advantages of low-cost, no radiation and high precision. According to the ultrasonic axial transmission characteristics, the velocity of the quantitative ultrasound propagating in long bones can evaluate bone status. A system with its own data acquisition module to collect ultrasonic signal is designed in this paper, and DSP is taken as microprocessor data acquisition module because of its powerful processing and fast data transmission. At the same time, the noise is filtered by the improvement of signal processing method, the ultrasound velocity are extracted in long bone, the BMD parameter test methods are successful implemented and optimized.