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Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Agreement between echo and CT in McGoon ratio calculation

From: Three steps approach for preoperative evaluation of tetralogy of Fallot patients: role of 128 MDCT

MCGON ratio

Echo

CT

Agreement

p value

Number

N = 77

N = 77

N

%

N

%

Not calculated

21

27.3

4

5.2

K = 0.3

< 0.001*

Calculated

56

72.7

73

94.2

Mean ± SD

1.29 ± 0.9

1.84 ± 0.81

r = 0.23

P = 0.04*

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