Ultrasound of the brain (neurosonography) is a study that is carried out in the presence of an open parietal lobe in an infant. It provides an opportunity to obtain and evaluate data on the functioning of the brain, as well as other structures located in the skull. Also, neurosonography allows identifying the development of abnormalities in the structure of the brain in children, even newborns. During the examination, the doctor can assess the size of all areas of the brain, the presence of congenital defects. Ultrasound of the brain is performed only for children up to one year old, until the crown of the head has grown. Sometimes it is possible to do it a little later through some areas of the bones of the skull, where they are thinner and pass ultrasound waves, but in this case the structures of the brain are much worse. It is possible to perform neurosonography for children in order to monitor the state of the brain, the effectiveness of therapy (if necessary) at intervals of 1-1.5 months. It is recommended to conduct at least one ultrasound of the brain for children under one year of age to rule out the presence of congenital anomalies.