Correction for the Presence of Intravascular Oxygen-I5 in the Steady-State Technique for Measuring Regional Oxygen Extraction Ratio in the Brain: 2. Results in Normal Subjects and Brain Tumour and Stroke Patients
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چکیده
Values of regional cerebral oxygen extraction ratio and oxygen utilisation obtained with the oxygen-IS steady-state inhalation technique have been found to be overestimated due to the signal from intravascular ox ygen-IS. A previously described method to correct for this intravascular component has been applied to a series of studies on normal subjects, and on brain tumour and stroke patients. With this correction the regional cerebral oxygen extraction ratio in normals becomes comparable to the global values previously reported with arteriove nous sampling techniques. Within the lesions of brain
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تاریخ انتشار 2010