What is the role of transcranial Doppler sonography in the workup of vertebral artery dissection (VAD)?

Updated: Feb 21, 2019
  • Author: Eddy S Lang, MDCM, CCFP(EM), CSPQ; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
  • Print

Transcranial Doppler is approximately 75% sensitive to the flow abnormalities seen in VAD. It is useful also in detecting high-intensity signals (HITS), which are characteristic of microemboli propagating distally as a result of the dissection. HITS are associated with symptomatic ischemic symptoms both in VAD and in other types of cerebrovascular disease.

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!