MRI for children basically does not have much effect on the body and is very safe, mainly paying attention to the following aspects: 1. MRI is different from CT, there is no radiation. 2. Some children do not cooperate and need to be sedated because of the high noise and long duration of MRI, and usually need to use sedatives such as chloral hydrate and valium, which may have sleep-related effects on the children themselves. 3, There are also some children who need to do MRI enhancement examination because of their condition, which requires the use of contrast enhancers, usually paramagnetic substances such as gadolinium, which do not have many side effects. 4. .