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Table 2 The detection rate of ventriculoarterial connections by different methods

From: Prenatal screening of fetal ventriculoarterial connections: benefits of 4D technique in fetal heart imaging

CHD (n)

2D (n)

4D-1 (n)

4D-2 (n)

Combined (n)

18–28 GW

    

 TGA (20)

70% (14)

50% (10)

100%# (20)

100%# (20)

 DORV (15)

80% (12)

53.3% (8)

80% (12)

80% (12)

 TOF (26)

76.9% (20)

57.7% (15)

80.8% (21)

96.2%* (25)

 TCA (10)

60% (6)

30% (3)

80% (8)

100%* (10)

29–36 GW

    

 TGA (9)

66.7% (6)

22.2% (2)

55.6% (5)

66.7% (6)

 DORV (7)

85.7% (6)

28.6% (2)

42.9% (3)

85.7% (6)

 TOF (10)

80% (8)

20% (2)

50% (5)

80% (8)

 TCA (4)

75% (3)

0

25% (1)

75% (3)

  1. CHD, congenital heart disease; Combined, sonographers made the diagnosis using both the 2D and 4D-2 data; DORV, double-outlet right ventricle; GW, gestational weeks; TCA, truncus arteriosus; TGA, transposition of the great arteries; TOF, tetralogy of Fallot; Compared with 2D method
  2. * P < 0.05; # P < 0.01