Regional differences of fMR signal changes induced by hyperventilation: Comparison between SE‐EPI and GE‐EPI at 3‐T

To evaluate whether reproducible signal change of brain tissues by hyperventilation (HV) can be seen on spin‐echo (SE)‐echo planar imaging (EPI) at 3‐T and to examine the sensitivity of SE‐EPI for measuring vascular reactivity in regions of the brain, such as the hippocampal formation, that are difficult to visualize with gradient‐echo (GE)‐EPI due to susceptibility artifacts.

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