Magnetic resonance imaging is a medical examination method that is primarily used to probe images of the body's internal structures and tissues. Although magnetic resonance technology is widely used in the medical field, if you do not pay attention to the disadvantages and safety precautions of magnetic resonance, it may cause harm to the human body. Here are four reasons why MRI should try not to do it:
First, the principle of magnetic resonance examination is to use the principle of magnetic resonance to place the human body in a strong magnetic field to obtain images of the internal tissues of the human body. This magnetic field can cause small changes in the body's tissues, resulting in sharper images. However, some people may be sensitive to magnetic fields and may experience uncomfortable symptoms such as headache, nausea, vomiting, etc. during the MRI process.
Second, MRI may cause radiation exposure. Although no ionizing radiation is produced during an MRI, a large amount of radiofrequency energy is used during the MRI procedure.
These RF energies can pass through human tissues, creating a thermal effect that causes local tissue temperatures to rise. If the examination takes too long or the examination site is too sensitive, it may lead to local tissue burns or other complications.
Third, MRI can cause damage to the human body. During the MRI examination, the human body needs to be in a strong magnetic field, and if there is a metal object at the examination site, it may be attracted or repelled by the magnetic field, which will cause the metal object to move and cause damage to the human body.
In addition, if there are implants such as pacemakers and cochlear implants in the human body, they may be disturbed by the magnetic field, causing the implants to malfunction or be damaged.
Fourth, MRI may affect the physiological functions of the human body. During an MRI examination, the human body is exposed to a strong magnetic field, which may have an impact on the physiological functions of the human body.
For example, an MRI may affect the body's heart function, respiratory function, nerve function, and more. Therefore, for some patients with diseases such as heart disease, respiratory disease, neurological disease, etc., it is necessary to be cautious when performing an MRI.