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Transcranial Doppler Ultrasonography for Diagnosis of Cerebral Vasospasm After Aneurysmal Subarachnoid Hemorrhage: Mean Blood Flow Velocity Ratio of the Ipsilateral and Contralateral Middle Cerebral Arteries
Neurosurgery, 09/08/2011
Nakae R et al. – 142 patients were retrospectively analyzed with specific data from 1262 Transcranial Doppler(TCD) studies. The threshold value that best discriminated between patients with and without delayed cerebral ischemia(DCI) was I/C mBFV of 1.5. In patients with subarachnoid hemorrhage(SAH), the I/C mBFV demonstrated a more significant correlation to vasospasm than the absolute mean flow velocity.
