NON-INVASIVE METHOD OF ASSESSING RELATIVE CHANGES OF CEREBRAL BLOOD VOLUME.
of cerebral blood volume. The purpose of this pilot study was to determine whether or not a non-invasive method based on NIRS could detect cerebral vascular changes in response to increases and decreases in cerebral perfusion pressure. Three subjects were used to develop the instrumentation. Each subject was instructed to lie quietly on a horizontal mattress supported by a wooden base. A hydraulic jack attached to the middle of either the head or foot of the base was used to tilt the subject either 15 degrees head-up or 15 degrees head-down. Prelimina ry recordings of NIRS during the tilt-up response indicate that compensatory cerebral vascular dilation following the stop change in body angle requires 20 to 50 sec.
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|Author:||DYCUS, PATRICIA; VISCO, DON|
|Publication:||Journal of the Tennessee Academy of Science|
|Article Type:||Brief Article|
|Date:||Jan 1, 2000|
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