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