Head MR can check metastatic cancer. Head MR, i.e. cranial magnetic resonance examination, is mainly used for the observation of brain lesions, clarifying whether the patient produces brain structural changes and the presence of intracranial tumors, etc. It is a commonly used means of checking distant metastasis of tumors such as intracranial metastasis and soft tissue metastasis. Symptoms such as unprovoked headache, visual disturbances, headache, personality or temperament changes in cancer patients may be caused by increased intracranial pressure or damage to brain nerves due to cancer metastasis to the brain. MRI of the head has a high diagnostic rate for intracranial ganglia, glioma, low-grade astrocytoma, cerebral infarction and other brain diseases. However, it should be noted that head MRI is not allowed when there are contraindications such as silver clips inside the skull, artificial pacemaker or neurostimulator, or metal at the examination site, etc. If there are no special contraindications, you just need to relax during the examination and cooperate with the doctor to complete the examination.