Transcranial Color Doppler Imaging

transcranial-color-doppler-imaging
A transcranial Doppler is a noninvasive imaging procedure that documents the flow of blood through cerebral arteries and veins. This exam is often performed to determine a patient’s risk for a transient ischemic attack (stroke) or to monitor patients with sickle cell disease.

During this procedure, a transducer is moved across the base of the skull to produce images of the blood vessels through sound waves. The speed of blood as it flows through the brain is highlighted through different colors on the images.

Indications:

  • Stenosis or occlusion in a major intracranial artery in the circle of Willis and vertebrobasilar system, including monitoring thrombolytic therapy for acute stroke patients.
  • Follow-up of patients with known stenosis or occlusion of a major intracranial artery in the circle of Willis and vertebrobasilar system.
  • Evaluation and monitoring of vasospasm in patients with subarachnoid hemorrhage.
  • Detection of circulating emboli in a major intracranial artery in the circle of Willis and vertebrobasilar system.
  • Detection of right-to-left shunts using agitated saline injection.
  • Assessment of vasomotor reactivity.
  • Confirmation of the clinical diagnosis of brain death by detection of complete cerebral circulatory arrest.
  • Intraoperative and periprocedural monitoring to detect embolization, thrombosis, hypoperfusion and hyperperfusion.

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