Review
Copyright ©2011 Baishideng Publishing Group Co.
World J Clin Oncol. Jul 10, 2011; 2(7): 289-298
Published online Jul 10, 2011. doi: 10.5306/wjco.v2.i7.289
Figure 4
Figure 4 Example of cerebrovascular reactivity measurement using administration of air with altered CO2 or O2 levels: after time shifting the Blood Oxygen Level Dependent signal pattern closely follows pressure of end-tidal CO2 (end tidal pressure of carbon dioxide) pattern (from Vesely et al[69]). Blood Oxygen Level Dependent magnetic resonance imaging and pressure of end-tidal CO2 (PET-CO2) signals are reported in arbitrary units. BOLD: Blood Oxygen Level Dependent.