Evaluation of human hemispheric blood flow based on noninvasive carotid blood flow measurements using the range-gated Doppler technique

Journal Article · · Stroke; (United States)

OSTI ID:6783478

Payen, D M; Levy, B I; Menegalli, D J; Lajat, Y I; Levenson, J A; Nicolas, F M

Common carotid blood flow (CCBF) was measured in 11 anesthetised patients without extracranial arterial disease (nine acute subarachnoid haemorrhages and two cases of head injury). The range-gated Doppler flowmeter with an adjustable range-gated time system and a double transducer probe was used to determine diameter, blood velocity, and blood flow of the common carotid artery. Values were, respectively, 5.9 +/- 1.1 mm, 13.8 +/- 6.1 cm . sec-1 and 387 +/- 183 cm/sup 3/. min-1. Mean cerebral blood flow (rCBF) measurements were simultaneously made by /sup 133/Xe intra-arterial method, with a value of 22.28 +/- 5.96 ml . min-1 . 100 g. High correlation coefficient was found between CCBF and mean rCBF (r . 0.73, p less than 0.001). The range-gated Doppler flowmeter thus provides a non invasive and easily duplicated method for monitoring cerebral blood flow in anesthetized patients.

• Research Organization: Laboratoire d'Anesthesie U.E.R. de Medicine, Nantes, France
• OSTI ID: 6783478
• Journal Information: Stroke; (United States), Vol. 13:3
• Country of Publication: United States
• Language: English

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