What is the role of ultrasonography in the workup of basilar artery thrombosis?

Updated: Jan 11, 2019
  • Author: Salvador Cruz-Flores, MD, MPH, FAHA, FCCM, FAAN, FACP, FANA; Chief Editor: Helmi L Lutsep, MD  more...
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Transcranial Doppler (TCD) ultrasonography is a useful tool for evaluating cerebrovascular disease; however, it is often inaccurate. In patients with basilar artery disease, the reported sensitivity is 72% and the specificity is 94%. TCD ultrasonography is helpful in follow-up once an initial evaluation has demonstrated the lesion.

The flow direction detected by TCD ultrasonography, in combination with CT angiography, may be useful before performing invasive angiography, to help predict the area of stenosis or occlusion. [13]

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