|
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)
|
- 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
-
*
P < 0.05; #
P < 0.01
