Comparison of ASL Measures of Cerebrovascular Reactivity to CO2 Using Different Respiratory Manipulations

Keywords

absolute achieve alternative although amount amplitude analyzer another attenuated avoided black block blocks body brain breath breathed breathing calibrated cerebral challenging circuit clinical common comparable completed complex comply component compounded concentration conclude condition conditions confound considered consisted consists continuous contrast control controlled corrected correlated curve delay design determine differ difficult disadvantages duration equipment execute expected expressed fixed flow generally health hold holds hyperventilation hypoxia implementation incidental include incorporating indicating indistinguishable individually induce inducing instances instructed instructions keeping labeling lead linear lowest manipulation manipulations measure measured measures minimal minor mixture mixtures modeling models monitored mostly motion much nasal normalization oxidative paced paired panel paradigm percent physiological plus polynomial programmed reactivity reduced related rendering reproducibility requiring resolution respective respiratory response responses rest resting robust sampler scanned seems segmentation separated series significantly simple specially spontaneously statistically status stimuli stimulus stroke subjects system target terms tidal types unchanged unit usually utilized virtually yielded young zero