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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*