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Correction for the Presence of Intravascular Oxygen-15 in the Steady-State Technique for Measuring Regional Oxygen Extraction Ratio in the Brain: 1. Description of the Method

1983·295 Zitationen·Journal of Cerebral Blood Flow & MetabolismOpen Access
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295

Zitationen

2

Autoren

1983

Jahr

Abstract

The oxygen-15 steady-state inhalation technique provides quantitative values of regional cerebral blood flow, fractional oxygen extraction, and oxygen utilisation. These last two, however, have been found to be higher than those reported using arteriovenous difference techniques. On theoretical grounds, this overestimation is due to the signal from nonextracted intravascular oxygen-15. In this paper, a method is presented to correct for this intravascular component utilising a measurement of regional cerebral blood volume. The statistical penalty imposed as a result of this correction is defined.

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Traumatic Brain Injury and Neurovascular DisturbancesOptical Imaging and Spectroscopy TechniquesMedical Imaging Techniques and Applications
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