Fig. 1From: Cerebral perfusion variance in new daily persistent headache and chronic migraine: an arterial spin-labeled MR imaging studyDiagram of cerebral perfusion by multi-delay ASL MR imaging. (A) The raw maps of ASL imaging, including different post label delays (PLDs) ranging from 1.00 to 3.66 seconds (s). (B) The arrival-time-corrected cerebral blood flow (CBF) colormaps. (C) The arterial arrival time (ATT) colormaps. (D) The arterial cerebral blood volume (aCBV) colormapsBack to article page