Brain MRI can be an invaluable tool for the diagnosis and monitoring of a variety of conditions. However, some patients find it extremely difficult to successfully complete the procedure. That’s because MRI can involve extended periods in a confined space, and it requires patients to remain still while images are being taken. Children (especially those who are very young), patients who are claustrophobic or anxious in small spaces, those who are in pain, or who experience involuntary movements like tremors or tics may be unable to remain still long enough to complete the exam. In these cases, sedatives or even general anesthesia may be prescribed so a patient can undergo the procedure.