What is the role of ultrasonography in the evaluation of posterior cerebral artery (PCA) stroke?

Updated: Jul 30, 2018
  • Author: Erek K Helseth, MD; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

TCD ultrasonography is not widely used in acute stroke; however, it may become useful as an adjunct in the diagnosis and acute treatment of stroke. TCD ultrasonography is dependent on the skill and experience of the operator. In skilled hands, the distal basilar and P1 and P2 segments can be assessed and may detect acute clot in the posterior cerebral artery (PCA).

Carotid duplex ultrasonography may be considered in PCA stroke when a fetal origin PCA is present. In this setting, carotid atheromatous disease would be symptomatic and patients may be considered for carotid endarterectomy or stenting for recurrent stroke prevention.


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