Time:1/11/2019 8:38:40 AMauthor:source:
Magnetics can not only diagnose but also help treat diseases. Magnet is a medicinal herb of ancient Chinese medicine. Now, people use the magnetic differences between different components in the blood to separate red blood cells and white blood cells. In addition, the interaction between the magnetic field and the human meridian can realize magnetic therapy, and has a unique role in the treatment of various diseases. It has been applied to magnetic therapy pillows and magnetic therapy belts. The iron remover made of magnet can remove the iron powder which may exist in the flour, etc. The magnetized water can prevent the scale of the boiler, and the magnetized seed can increase the yield of the crop to a certain extent.
In medicine, the use of nuclear magnetic resonance can diagnose abnormal tissue and determine disease. This is our familiar MRI technology. The basic principle is as follows: the nucleus has positive electricity and spin motion. Usually, the arrangement of the spin axis of the nucleus is irregular, but when it is placed in an external magnetic field, the spatial orientation of the nuclear spin transitions from disorder to order. The magnetization vector of the spin system gradually increases from zero, and when the system reaches equilibrium, the magnetization reaches a stable value. If the nuclear spin system is subjected to external influences at this time, the RF excitation of the nucleus at a certain frequency can cause a resonance effect. After the RF pulse is stopped, the atomic nucleus that has been excited by the spin system cannot maintain this state, will return to the original alignment state in the magnetic field, and release weak energy, become a radio signal, detect many signals, and make At the time of spatial resolution, an image of the distribution of nuclei in motion is obtained. Nuclear magnetic resonance is characterized by the fact that flowing liquid does not produce a signal called flow effect or flow blank effect. Thus the blood vessels are gray-white tubular structures and the blood is black with no signal. This makes the blood vessels easy to separate from soft tissue. Surrounded by cerebrospinal fluid around the normal spinal cord, the cerebrospinal fluid is black, and the white dura mater is set against fat, making the spinal cord appear as a strong white signal structure. NMR has been applied to the imaging diagnosis of various systems throughout the body. The best effect is the brain, its spinal cord, large blood vessels, joint bones, soft tissues and pelvis. Cardiovascular disease can not only observe the anatomical changes of each chamber, large blood vessels and valves, but also can be used for ventricular analysis, qualitative and semi-quantitative diagnosis, can be used as multiple cut charts, high spatial resolution, showing the whole heart and lesions And its relationship with surrounding structures, superior to other X-ray imaging, two-dimensional ultrasound, radionuclide and CT examination. Magnet manufacturer
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