Click on image to view larger version.
FIG 2. Sequential signal intensity ratio change. Signal intensity of various structures normalized to white matter as a function of time after initiation of supplemental oxygen to volunteers shows that signal intensity of prepontine, ambient, and interpeduncular cisterns and sulci over the convexity increases rapidly after oxygen inhalation. No signal intensity changes are seen in the lateral ventricles, brain parenchyma, vitreous (eye), and choroid plexus. PREPON, prepontine cistern; AMBIENT, ambient cistern; INTERPED, interpeduncular cistern; LAT.VENT, lateral ventricle; CHOROID.PL, choroid plexus; CONVEX, sulci over the convexity; GRAY, gray matter; EYE, vitreous of eye; WHITE, white matter.
