In general, there is no special preparation needed for an MRI Seizure protocol Plain. However, patients should inform their healthcare provider about any medical conditions, such as claustrophobia or metallic implants, before the test. Patients will need to lie still during the test, which may take up to an hour or more, depending on the complexity of the images needed. Sedation may be offered to patients who have difficulty remaining still during the test. Patients should also remove any metal objects, such as jewelry or hearing aids, before entering the MRI room.