Enhanced CT can be done when hyperthyroidism is well controlled. When doing enhanced CT, the contrast agent has to be injected, and the main component of contrast agent is iodine, if too much iodine is injected at once in a short period of time, it may lead to aggravation of hyperthyroidism and even cause thyroid crisis, so it is forbidden to do enhanced CT for patients with active hyperthyroidism. When the hyperthyroidism is well controlled, it is usually possible to do enhanced CT, but there is also a certain risk of relapse of the disease. Therefore, if you need to do enhanced CT, you should choose enhanced CT carefully under the doctor’s comprehensive evaluation, and closely monitor the thyroid function after enhanced CT. When the hyperthyroidism is under control and enhanced CT is necessary, it should be performed under the doctor’s full assessment of the condition.