RCT for Intermittent Versus Continuous Propofol Sedation for Pediatric Brain and Spine MRI Studies

Inclusion Criteria: * Age 1 month to 18 years * Receiving a brain or spine MRI with propofol sedation * Deemed safe to undergo sedation with propofol based on a pre-sedation examination * Patient judged not to require any pre-medication with any other medication except nasal decongestants or anticholinergic medications Exclusion Criteria: * Patient below or above set age limits. * Patient requires MRI studies on other body areas. * Patient requires pre-medication with a sedative or tranquilizer * Patient requires additional medications during sedation to complete the procedure. * Propofol is being used as a rescue sedative to complete the procedure. * Propofol is being used as a rescue sedative to complete a procedure that was initiated by another sedative. * Patients who develop complications that require termination of the imaging procedure will not be included in the dose or recovery time calculations, but the complication will be counted as such in their respective group and study will be reported as non-diagnostic. * Insulin dependent diabetes * Thyroid disease