Transcranial Doppler sonography in aneurysmal subarachnoid hemorrhage

Area of Science:

• Neurology
• Neurosurgery
• Medical Imaging

Background:

• Cerebral vasospasm following subarachnoid hemorrhage (SAH) is a major cause of morbidity and mortality.
• Accurate assessment of vasospasm is crucial for guiding operative decisions and timing.
• Noninvasive methods are needed to evaluate intracranial artery status post-SAH.

Purpose of the Study:

• To evaluate the utility of Transcranial Doppler (TCD) sonography in assessing cerebral vasospasm after SAH.
• To determine if TCD can reliably identify patients at risk for symptomatic vasospasm and guide therapy.
• To assess the correlation between TCD findings and angiographic results.

Main Methods:

• Utilized Transcranial Doppler (TCD) sonography as a noninvasive method.
• Evaluated the status of intracranial arteries following subarachnoid hemorrhage (SAH).
• Correlated TCD findings with angiographic images of cerebral vessels.

Main Results:

• TCD sonography demonstrated good reproducibility in identifying patients likely to develop symptomatic vasospasm.
• The method can outline the progression of cerebral vasospasm and serve as a therapeutic guide.
• Despite challenges like anatomical variations and disease peculiarities, experienced TCD use showed good correlation with angiography.

Conclusions:

• Transcranial Doppler sonography is a valuable noninvasive tool for monitoring cerebral vasospasm after SAH.
• TCD aids in risk stratification, disease monitoring, and therapeutic guidance in SAH patients.
• While not without limitations, TCD in experienced hands correlates well with gold-standard angiography.