Table 2 Categorization as per the International Consensus Criteria in tiers 2 and 3.

From: Simultaneous monitoring of the middle cerebral and basilar arteries to detect right-to-left shunts using transcranial Doppler by agitated saline administration

Tier 2 (R-MCA vs L-MCA)

Left (L)

Total

Grade 0

Grade 1

Grade 2

Grade 3

Right (R)

Grade 0

22

48

0

0

70

Grade 1

46

106

8

0

160

Grade 2

0

13

98

0

111

Grade 3

0

0

0

3

3

Total

68

167

106

3

344

  

Weighted Kappa index 0.687 (p < 0.001)

Tier 3 (iMCA vs BA)

BA

Total

Grade 0

Grade 1

Grade 2

Grade 3

iMCA

Grade 0

78

18

0

0

96

Grade 1

17

104

1

0

122

Grade 2

0

2

78

0

80

Grade 3

0

0

0

5

5

Total

95

124

79

5

303

  

Weighted Kappa index 0.812 (p < 0.001)

  1. L-MCA left middle cerebral artery, R-MCA right middle cerebral artery, iMCA index of middle cerebral artery, BA basilar artery.
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