Enhanced MRI is based on the same principle as normal MRI, but it requires injection of a contrast agent to achieve a clearer examination. In contrast, MRI is a disease examination through a strong magnetic field without radiation, but a few patients may be allergic to the contrast agent. MRI is a very commonly used clinical examination method, which can clearly show various cranial, spinal, skeletal and muscular lesions, and also has good results for abdominal diseases. The principle of MRI is that hydrogen atoms in the body resonate under the action of a strong magnetic field, which generates signals, so that tissues with different water content can show different signals on the MRI image. Unlike CT, MRI does not emit radiation and therefore causes very little harm to the human body. There have been no reports of MRI-related adverse events. Enhanced MRI, which involves injecting a contrast agent through a blood vessel and then scanning it, can show the relationship between the lesion and the surrounding tissues more clearly and also observe the blood supply of the lesion, which can provide a basis for the next step of treatment. A small number of patients may be allergic to the contrast agent and can experience an allergic reaction after injection. In addition the contrast agent is mainly excreted through the kidneys, and patients with renal insufficiency should be carefully evaluated before the examination. Enhanced MRI is a very safe examination, without absolute contraindications, if the condition requires the examination should be carried out in a timely manner, it is not recommended to easily believe in certain rumors without scientific basis and magnify the harm of enhanced MRI, so as not to delay the treatment.