AD	Alzheimer’s disease
APP	amyloid precursor protein
Aβ	amyloid-β
APOE	apolipoprotein E gene
BOLD	blood oxygenation level-dependent
BBB	blood–brain barrier
BODIPY	boron dipyrromethene
CBF	cerebral blood flow
CBV	cerebral blood volume
CTR	control subjects
CNN	convolutional neural network
DMN	default-mode network
HbR	deoxy-hemoglobin
FLIM	fluorescence lifetime imaging
HC	healthy control
HOA	healthy older adults
MCI	mild cognitive impairment
MSE	multiscale entropy
NPs	nanoparticles
HbO	oxy-hemoglobin
PCC	posterior cingulate cortex
ROI	region of interest
RSNs	resting-state networks
TPSA	topological polar surface areas