Fig. 1
From: A visual quality control scale for clinical arterial spin labeling images
The cerebral blood flow (CBF) and T1 relaxation rate (R1) maps in the top row show an example of good contrast between the white matter and the cortical and subcortical grey matter: caudate nucleus head and body (arrowheads), thalamus (asterisk), white matter (arrow), grey matter (open-headed arrow). The arterial blood volume (aBV) maps illustrate the larger arterial volume corresponding to the anterior (triple arrow), middle (double arrow) and posterior cerebral (open arrow) arteries. The arterial transit time (ATT) maps show the areas of prolonged ATT in the superficial (asterisks) and deep (triple arrows) watershed areas