The Significance of Increased Transcranial Doppler Flow Velocity After Severe Brain Injury
Transcranial doppler (TCD) allows repeated or continuous non-invasive measurement of blood flow velocity in major intracranial vessels . Flow velocity is proportional to cerebral blood flow (CBF) and inversely related to cross-sectional area of the insonated vessel. Increased blood flow velocity may therefore occur in association with elevated CBF or reduced vessel diameter. Both situations are known to occur following brain injury [6, 7]. The present study aims to examine the relationship between increased blood flow velocity and subsequent development of ischaemic neurological complications following severe brain injury.
KeywordsCerebral Blood Flow Computerise Tomography Severe Head Injury Jugular Bulb Severe Brain Injury
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