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Circle of Willis

Magnetic resonance angiogram of the circle of Willis. (Contributed by Dr. Brian Silver.)

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Associated Disorders

  • Amaurosis fugax
  • Aortic atherosclerosis and stroke
  • Atrial fibrillation
  • Carotid bruit
  • Carotid transient ischemic attacks
  • Coronary artery disease
  • Deep venous thrombosis
  • Diabetes mellitus
  • Fabry disease
  • Fibromuscular dysplasia
  • Headache associated with ischemic cerebrovascular disease
  • Hyperlipidemia
  • Hypertension
  • Intracranial atherosclerosis
  • Moyamoya disease
  • Neurologic complications of diseases of the aorta
  • Peripheral vascular disease
  • Polycythemia
  • Pulmonary embolism
  • Seizures
  • Sleep disorders associated with stroke
  • Stroke associated with atrial fibrillation
  • Stroke associated with cerebral angiography
  • Stroke associated with drug abuse
  • Stroke associated with myocardial infarction
  • Stroke associated with sickle cell disease
  • Vertebrobasilar transient ischemic attacks