FIGURE 3.

Change in cerebral blood flow (CBF) after placebo or tadalafil in older people with small vessel disease, as a function of age. Change in CBF in total gray matter (A), and normal‐appearing white matter (B). Lines of best fit are shown for placebo (solid line), or tadalafil (dashed line) or for all data points (gray line). Figure from Pauls et al., ³⁶ reproduced with permission.