Bone tissue non-invasive detection method and device based on dynamic magnetic excitation ion spectroscopy

Abstract

The invention provides a non-invasive bone tissue detection method and device based on a dynamic magnetic excitation ion spectrum. The bone tissue is regarded as a magnetic signal transmission channel, and the internal structure condition is inversed by recording and analyzing the dynamic magnetic excitation ion spectrum and the biological magnetic signal distribution condition and combining a Maxwell equation. According to the device, broadband magnetic signals are adopted to serve as excitation signals to measure the dynamic magnetic excitation ion spectrum; environmental magnetic field interference is partially shielded by combining an active mode and a passive mode, so that the detection precision is improved; the quantity, directly coupled to a magnetic field receiving unit, of an exciting magnetic field is reduced through suppression-self-induction magnetic field detection probes, so that the detection resolution is improved; vertical polarization is achieved without needing magnets, and small-scale non-invasive bone tissue detection with the low power dissipation, low cost and high precision can be achieved.

Description

technical field [0001] The invention relates to the technical fields of electromagnetism, medical detection and the like, in particular to a bone tissue non-invasive detection method and device based on dynamic magnetic excitation ion spectrum. Background technique [0002] Orthopedics is one of the most common departments in major hospitals. Common diseases include: bone disease, hyperosteogeny, fracture, osteoporosis, arthritis, cervical spondylosis, etc. Commonly used non-invasive detection methods include: X-ray inspection, computerized tomography (Computed Tomograhy, hereinafter referred to as "CT"), and magnetic resonance imaging technology (Magnetic Resonance Imaging, hereinafter referred to as "MRI"). Among them, the first two detection methods can detect bones and soft tissues, and both use X-rays as detection signals, which have certain radioactive pollution, are harmful to the human body and the environment, and are bulky and expensive, so they are not suitable fo...

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Problems solved by technology

Superconducting magnets need to use liquid nitrogen to achieve low-temperature superconductivity, which has problems such as high technical difficulty, high manufacturing costs, high maintenance costs, and large volume.

In addition, although permanent magnets can also achieve high magnetic field strength, the magnets are bulky and the uniformity of the magnetic field is difficult to guarantee.

Therefore, MRI equipment has high power consumption, large volume, high cost and high inspection cost, and is not suitable for wide-scale use.

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