Recently, Mr. Shao from Zhoukou, Henan, was left in the inspection cabin by the staff after completing an MRI examination at the Municipal Hospital of Traditional Chinese Medicine. The victim said that no one answered his call, and the inside was stuffy and hot. About 20 minutes later, he took off his hood and crawled out and found that the medical staff were actually playing with their mobile phones. The hospital admitted that this happened and said that all the interns who were present at the time were all interns who had been discharged, the relevant departments were punished, and the doctors were warned. (Henan TV Station)
I won’t interrupt the problems exposed in hospital management, and everyone can think of it. Then, what are the less popular knowledge about nuclear magnetic resonance that are worth knowing? First of all, MRI: Magnetic resonance imaging is a radiology-based medical imaging technology that is usually used to generate images of internal organs of the human body to assist medical diagnosis. The principle of generating images by MRI scanners mainly uses strong magnetic fields, magnetic field gradients and radio waves. To put it simply, MRI mainly takes advantage of the fact that our human body is filled with a lot of water. Water usually accounts for about 70% of the body’s total weight, which accounts for a higher proportion in babies. Moreover, the water contained in the various organs, tissues and organs of the human body is different, and the more active the metabolism is, the higher the water content. For example, in the heart, kidneys, lungs and other organs, the proportion of water is usually more than 80%, and the proportion of water in the brain is usually more than 70%. Therefore, it is not unreasonable to say that “the brain is flooded”. In general, MRI uses a powerful magnetic field to “shake” the water molecules in the body to vibrate, and then calm them down to detect changes in water molecules. The place with a lot of water is the place with the strongest MRI signal. Therefore, the brain, spinal cord, heart, articular cartilage and other places are the favorite parts of MRI. In addition, magnetic resonance is equivalent to artificially creating a magnetic field and then using electromagnetic signals for imaging, so there is no radiation. Therefore, NMR has no radiation! Based on the above characteristics, MRI can be used to diagnose many problems, such as joints, ligament problems, spinal deformation problems, heart and brain damage problems, and finding tumors in the body. For nuclear magnetism, in addition to the familiar metal devices such as pacemakers that can cause danger, there are also two types of relatively unpopular things that may also cause danger during the inspection process: I. Tattoos: Because of the pigments used in tattoos, It may contain metal components such as iron oxide, so when doing NMR, the temperature of the skin at the tattoo may be raised, which may cause local burns. II. Cosmetics: Some cosmetics also contain metal components, so when doing NMR, you must not hope to use light makeup to get through. After all, this is related to your health. Of course, although MRI is usually painless, friends who have been with it should also know that the whole process is not very comfortable. Especially because of the small internal space of the instrument, this may be especially true for friends suffering from “claustrophobia”. In addition, if it is an enhanced MRI scan with a contrast agent, it may be really dangerous to be forgotten in the inspection cabin, because after the injection of the contrast agent, some people will experience headaches, chills, itching or nausea. I don’t know if this uncle happened to encounter these two situations, otherwise it would really be dangerous.