Retrospective Study
Copyright ©The Author(s) 2016.
World J Radiol. Nov 28, 2016; 8(11): 887-894
Published online Nov 28, 2016. doi: 10.4329/wjr.v8.i11.887
Figure 1
Figure 1 Schematic representation of the ON-OFF CO2 challenge of 7% CO2 applied via a simple nasal cannula. The magnitude of the CO2 induced change in the blood oxygenation level dependent (BOLD) response represents the cerebrovascular reserve (CVR).