Backscattering ultrasonic bone diagnosis system

Abstract

The invention belongs to the technical field of medical instruments, and in particular relates to a backscattering ultrasonic bone diagnosis system. The system consists of a multi-loop power supply module, a high-pressure pulse transmission circuit, a high-voltage isolation circuit, an analog front-end circuit, an analog-to-digital conversion circuit, an FPGA (Field Programmable Gate Array) chip, an ARM processor, an LCD (Liquid Crystal Display) and an ultrasonic probe. The ARM processor communicates with the FPGA chip through a high-speed bus, and other modules are controlled by the FPGA chip to work; after the ARM processor acquires a collected backscattering signal from the FPGA chip, a waveform is recovered by adopting a demodulator filter, then time and frequency analysis processing is performed on the entire waveform, a power spectrum migration parameter provided by the invention is calculated, and thus diagnosis is performed on bone conditions. The transmission circuit of the system has a strong driving capability, can output continuous pulse modulation waveforms, and greatly improves the signal-to-noise ratio of the backscattering signal. The backscattering ultrasonic bone diagnosis system only uses one ultrasonic probe to realize ultrasonic diagnosis of the bone, and has the characteristics of miniaturization and integration.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and in particular relates to a backscattered ultrasonic bone diagnosis system. Background technique [0002] Ultrasound is considered to be a method with great potential for bone diagnosis because of its unique advantages of non-destructive, non-ionizing radiation, real-time, cheap and portable. Ultrasonic diagnostic methods of bone are mainly divided into ultrasonic transmission method and backscatter method. Ultrasonic transmission method was developed earlier and has been widely used. However, the ultrasonic transmission method can only measure bone loss, and cannot reflect the microstructure of the bone; it can only measure the root bone of the human body, and cannot measure bones in other parts; and it requires two ultrasonic probes, one sent and one received , thereby increasing the cost and complexity of the system. The research of ultrasonic backscattering method has been d...

AI Technical Summary

Problems solved by technology

At present, there are only bone diagnostic instruments based on ultrasonic transmission method on the market, and there is no bone diagnostic instrument based on ultrasonic backscattering method.

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