Which imaging studies may be helpful in the workup of cerebral aneurysms?

Updated: Dec 06, 2018
  • Author: David S Liebeskind, MD, FAAN, FAHA, FANA; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

Transcranial Doppler ultrasonography: TCD facilitates the diagnosis of vasospasm and serial monitoring of cerebral blood flow at the bedside. TCD has exhibited close correlation with angiography in the setting of vasospasm, typically manifesting 3-21 days following aneurysmal SAH.

Single-photon emission computed tomography (SPECT), positron emission tomography (PET), xenon-CT (XeCT): With these techniques, cerebral blood flow studies may depict ischemia associated with vasospasm, although these modalities are not employed routinely.

Cervical spine imaging: Radiographic assessment of the cervical spine should be performed in all comatose patients with an unwitnessed loss of consciousness.


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