Cardiac imaging does not generally cause cerebral infarction. Cardiac imaging is a technique that shows lesions in the vascular system after contrast is injected through the vascular system, whereas cerebral infarction is generally a disease caused by the blockage of blood vessels by emboli originating from the blood, and the two are mostly unrelated to each other. A cerebral infarction is a sometimes life-threatening condition of ischemia and hypoxia in the brain tissue caused by a blockage of a cerebral blood vessel. Risk factors for cerebral infarction generally include organic lesions of the heart, smoking, and a high-fat diet. The molecular size of the contrast agent in cardiac imaging is very small, not enough to block blood vessels, so it generally does not cause cerebral infarction. In summary, cardiovascular imaging is relatively low risk and generally does not cause cerebral infarction. However, if the patient is allergic to the contrast agent, it may cause respiratory distress and shock; if the dose of contrast agent is large, it may cause contrast agent poisoning. Therefore, if discomfort occurs during cardiac imaging, timely consultation should be made to identify the cause of the disease.