MRI itself uses an applied magnetic field, so there is no radiation effect on the human body. Although there will be more or less biological effects, so far there are no reports of biological effects causing significant harm to the human body, so MRI is relatively safe compared to other imaging methods that apply radiation for examination. However, MRI examinations are longer and the space is more confined, so patients may experience fear during the examination, resulting in symptoms such as rapid heart rate, but they are temporary and patients can be relieved soon. There is also the fact that MRI is noisy and some people are sensitive to noise and may experience ear discomfort. But this can be avoided by using special earplugs to plug the ears before the examination.