Criteria

All patients who have experienced a
retinal or hemispheric TIA or Stroke.

Vascular imaging (doppler, CTA, MRA

or DSA) confirming a 50-99% stenosis

of the appropriate Carotid artery.

Both Inpatients and outpatients are

eligible.

 Patients with asymptomatic high grade carotid stenosis are not accepted. We will be considering such patients
in the future in the context of upcoming clinical trials..