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Table 1 Items evaluated for the visual quality control of ASL images

From: A visual quality control scale for clinical arterial spin labeling images

Evaluation of CBF maps
Contrast component
 Grey matter (0–2)
 Grey/white matter differentiation (0–2)
 Basal ganglia and thalami (0–2)
 Subtotal (0–6)
Artifact component
 Motion (0–2)
 Signal drop (0–2)
 Distortion (0–2)
 Bright spots and areas (0–2)
 Subtotal (0–8)
Grand total (0–14)
Evaluation of ancillary maps (QUASAR-specific)
Contrast
 R1
  Grey matter (0–2)
  Grey/white matter differentiation (0–2)
  Basal ganglia and thalami (0–2)
  Subtotal (0–6)
 aBV
  Anterior cerebral arteries (0–2)
  Middle cerebral arteries (0–2)
  Posterior cerebral arteries (0–2)
  Subtotal (0–6)
 ATT
  Anterior watershed area (2)
  Posterior watershed area (2)
  Deep watershed area (2)
  Subtotal (0–6)
Grand total (0–18)
  1. A higher score means a better contrast or less artifacts. Range of scores within parentheses. ASL arterial spin labeling, CBF cerebral blood flow, QUASAR quantitative signal targeting with alternating radiofrequency labelling of arterial regions, R1 longitudinal relaxation rate, aBV arterial blood volume, ATT arterial transit time