Nuclear magnetic resonance imaging is a term that people often hear about. It is a very important examination method in medicine. The main principle is to use pulsed magnetic field imaging to understand the distribution within human tissues through imaging. In real life, many people have misunderstandings about nuclear magnetic resonance imaging, such as thinking that it is radioactive. In fact, nuclear magnetic resonance imaging is generally not harmful, especially now that superconducting nuclear magnetic resonance imaging has the following advantages. What are the advantages of superconducting NMR? 1. It has good soft tissue resolution. It can clearly distinguish soft tissue structures such as muscles, tendons, fascia, fat, etc., detect tiny lesions of several millimeters in the brain and spinal cord, and clearly show lesions in the skull base, brainstem, and cerebellum. MRI has absolute advantages in the examination of the central nervous system, bone and joint system and most solid organs. 2. It has the ability to make arbitrary sections in multiple directions, which can clearly show the location and range of the lesion and its relationship with the surrounding tissues and organs. It has unique advantages in the qualitative, localized and quantitative diagnosis of many lesions, with no blind spots in observation. 3. No trauma, no X-ray radiation, avoiding the radiation damage to the human body caused by other radiological imaging examinations. 4. The heart, great blood vessels, bile duct and urethra can be clearly displayed without contrast agents, which can replace a considerable number of invasive X-ray examinations and avoid the trauma, pain and risks of patients undergoing intubation and intravenous injection of contrast agents. Things to note when taking an MRI 1. The examinee must not have any metal implants Such as: cochlear implants, cerebral aneurysm clips, some metal vascular stents, cardiac defibrillators and pacemakers. 2. The inspector must remove any metal objects from his/her possession Such as jewelry, hairpins, glasses, watches, wigs, dentures, hearing aids, underwire underwear, mobile phones, bank cards and coins, keys, lighters, metal belts, metal buttons and other metal accessories or items. With the advancement and development of science and technology, many orthopedic internal fixators are made of titanium alloy or titanium metal. Titanium is not attracted by magnetic fields. If the patient has titanium internal fixtures in the body, an MRI examination can be performed. |
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