First of all, we can say for sure how often an MRI examination can be performed. Because MRI is different from CT and other imaging examinations. CT is a diagnostic technique that uses radiation to form images, while MRI examinations mainly use the nuclei of hydrogen atoms in human tissue cells, which change in motion within a strong magnetic field, without imaging through radiation. Therefore, MRI does not produce ionizing radiation during its work and does not cause any harm to the human body. Therefore, as long as it is necessary for clinical diagnosis and the patient can afford it financially, there is no problem how often MRI is done.