Table 4

Comparison of hypothesized predictors of PH in the PH and no-PH groups

PH mean

± SD

No-PH mean

± SD

P

Main PA diameter (mm)

32.2 ± 5.3

29.0 ± 3.9

0.0021

Left PA diameter (mm)

24.2 ± 4.6

22.9 ± 3.2

0.1225

Right PA diameter (mm)

24.0 ± 4.3

23.4 ± 3.7

0.4618

RDPA diameter (mm)

19.4 ± 4.4

17.0 ± 2.6

0.0072

True RDPA diameter (mm)

15.3 ± 3.7

13.4 ± 2.4

0.0027

True LDPA diameter (mm)

19.4 ± 3.8

18.1 ± 3.4

0.0509

RV free wall thickness (mm)

5.4 ± 2.4

4.0 ± 1.2

0.0023

RV lumen diameter (mm)

36.9 ± 10.1

35.3 ± 7.9

0.4293

LV free wall (mm)

11.6 ± 3.6

11.1 ± 3.3

0.4820

LV lumen (mm)

44.0 ± 15.5

42.9 ± 9.5

0.9942

Hilar diameter (mm)

127.1 ± 13.7

118.2 ± 12.0

0.0018

RV wall/LV wall ratio

0.51 ± 0.25

0.38 ± 0.14

0.0214

RV lumen/LV lumen ratio

1.02 ± 0.85

0.85 ± 0.26

0.9796

L apical artery/bronchus ratio

1.33 ± 0.43

1.27 ± 0.35

0.6023

Hilar/thoracic ratio

0.51 ± 0.04

0.49 ± 0.04

0.0687

Main PA/AA ratio

0.97 ± 0.2

0.86 ± 0.13

0.0014

Main PA/DA ratio

1.24 ± 0.27

1.15 ± 0.17

0.2023

PH %

no-PH %

IV septum bowed into LV

16.7

2.7

0.0608

See table 1 for definitions of radiographic metrics.

Chan et al. BMC Medical Imaging 2011 11:7   doi:10.1186/1471-2342-11-7