There is a certain amount of radiation for children, but the amount of radiation is very small and parents should not be overly concerned. Children may have respiratory infections caused by viruses, bacteria or mycoplasma, resulting in coughing, fever, chest tightness and other symptoms. A chest radiograph is recommended when there is a high suspicion of pneumonia in children, because a chest radiograph in children with pneumonia has a high density patchy image, which is helpful in the diagnosis of pneumonia. The amount of radiation during chest radiographs in children is very small, and the exposure time is very short, so the effect on the child’s body is negligible. Therefore, chest radiographs can be taken in children. Although chest radiographs are somewhat radioactive for children, the amount of radiation is manageable.