Table 1: Cardiothoracic index (CT) values

at pediatric ages.9-11

Age

CT index

Range

0-3 weeks

0.55

0.45-0.65

4-7 weeks

0.58

0.46-0.70

1 year

0.53

0.45-0.61

1 a 2 years

0.49

0.39-0.60

2-6 years

0.45

0.40-0.52

7 years

< 0.50

0.40-0.50