The following evaluations are recommended:[1823] Imaging exams of the brain to establish the diagnosis Evaluation by a neurologist Evaluation by a doctor specialized in epilepsy if seizures are present Psychiatric evaluation if necessary Magnetic resonance angiography (MRA) of the brain vessels, carotid arteries, and aorta because of the risk for stroke Evaluation by a cardiologist and either echocardiogram or a heart magnetic resonance imaging (MRI) because of the risk for aortic aneurysm Evaluation by a hematologist if findings suggest a bleeding diathesis. 
How to diagnose Periventricular heterotopia ?