[IC‐P‐159]: A COMPARISON OF BRAIN IMAGING MODALITIES AND ANALYSIS APPROACHES FOR MEASURES OF CEREBROVASCULAR RESPONSIVENESS

Figure 2. Calculating CVR values from fMRI data in 32 healthy individuals. Comparing two different analysis approaches (fMRI: linear regressionvs. TCD: 30-s steady state) applied to fMRI data acquired in two different experimental conditions (stimulus concentration: 5% vs. 7% CO2). Pearson’s correlations revealed significant association of CVRs derived from each analysis approach for both 5% CO2 (r 1⁄4 0.872; p < 0.001) and 7% CO2 (r 1⁄4 0.956; p < 0.001). Claire V. Burley, Karen Mullinger, Susan T. Francis, Anna C. Whittaker, Samuel J. E. Lucas, University of Birmingham, Birmingham, United Kingdom; University of Nottingham & University of Birmingham, Nottingham, United Kingdom; University of Nottingham, Nottingham, United Kingdom. Contact e-mail: cvb469@bham.ac.uk