What can imaging tell us about cognitive impairment and dementia?

Figure 5 Hexamethylpropylene amine oxime single photon emission computed tomography in a patient with mixed vascular disease and Alzheimer’s disease. A: Shows reduced perfusion in both the frontal and parietal lobes, especially on the left; B: Parametric images providing an overall view. There was hippocampal atrophy on computed tomography (Images kindly prepared by Dr. Fergus McKiddie).