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Table 1 Visualization rates of fetal echocardiographic planes at various gestational ages

From: Eleven fetal echocardiographic planes using 4-dimensional ultrasound with spatio-temporal image correlation (STIC): a logical approach to fetal heart volume analysis

Echocardiographic planes

 

15-17 wk

(N = 31)

18-22 wk

(N = 64)

23-27 wk

(N = 37)

28-32 wk

(N = 33)

33-40 wk

(N = 17)

Total

N = 182

pvalue

Abdominal view

%

96.8(30/31)

100(64/64)

97.3(36/37)

97.0(32/33)

100(17/17)

98.2

1.000

4CH view

%

96.8(30/31)

98.4(63/64)

100(37/37)

100(33/33)

100(17/17)

99.0

0.606

5CH view

%

87.1(27/31)

100(64/64)

100(37/37)

100(33/33)

100(17/17)

97.4

0.002

3VV view

%

83.9(26/31)

98.4(63/64)

100(37/37)

100(33/33)

100(17/17)

96.5

0.003

3VT view

%

45.2(14/31)

64.1(41/64)

81.1(30/37)

69.7(23/33)

82.4(14/17)

68.4

0.016*

Transv Ao arch

%

74.2(23/31)

76.6(49/64)

51.4(19/37)

54.5(18/33)

23.5(4/17)

56.0

<0.001*

Long ductal arch

%

93.5(29/31)

98.5(63/64)

100(37/37)

84.8(28/33)

64.7(11/17)

88.3

<0.001

Long Ao arch

%

96.8(30/31)

95.3(61/64)

100(37/37)

93.9(31/33)

76.5(13/17)

92.5

0.022

Long caval view

%

93.5(29/31)

96.9(62/64)

97.3(36/37)

78.8(26/33)

70.6(12/17)

87.4

0.001

LVOT

%

87.1(27/31)

98.4(63/64)

100(37/37)

100(33/33)

100(17/17

97.1

0.014

Short axis Great V

%

83.9(26/31)

95.3(61/64)

100(37/37)

97.0(32/33)

82.4(14/17)

92.3

0.016

Mean of all views

%

85.6

92.9

93.4

88.7

81.8

  
  1. 4CH = four-chamber, 5CH = five-chamber, 3VV = three-vessel, 3VT = three-vessel and trachea, Transv Ao arch=transverse aortic arch, Long ductal arch=long axis of ductal arch, Long Ao arch = long axis of aortic arch, Long caval = longitudinal caval, LVOT = left ventricular outflow tract and Short axis Great V = short axis view of the great vessels.
  2. p value from Fisher's Exact Test and p value* from Pearson Chi-square