Fig. 1From: A brief review of non-invasive brain imaging technologies and the near-infrared optical bioimagingModality of MRI/fMRI. a Axial MRI slice of a patient with a brain tumor. b BOLD dependent fMRI scans of verbal fluency task performed by healthy controls (left) and subjects with alzheimer’s disease (right). Adapted with permission from Crowe et al. 2017 (a) and from Preti et al. 2014 (b)Back to article page