Table 3 Accuracy of extrapolation for CT sections with different slice thickness

thickness

10 mm

6 mm

5 mm

7.5 mm

5 mm

n =

35

12

121

38

17

V_total (ml)

16.0 (-60.7 to 92.8)

25.1 (48.0 to 98.2)

18.4 (-57.5 to 94.4)

3.0 (-57.0 to 63.0)

9.6 (-52.2 to 71.4)

V_non (%)

-0.1 (-0.9 to 0.8)

-0.1 (-0.4 to 0.3)

0.0 (-0.4 to 0.4)

0.0 (-1.2 to 1.2)

0.0 (-0.4 to 0.5)

V_poor (%)

-0.5 (-2.6 to 1.6)

-0.2 (-0.8 to 0.3)

-0.1 (-0.9 to 0.7)

0.2 (-1.6 to 2.0)

-0.2 (-1.5 to 1.2)

V_normal (%)

0.6 (-1.8 to 3.0)

0.3 (-0.4 to 1.0)

0.1 (-0.9 to 1.1)

-0.2 (2.0 to 1.7)

-0.2 (1.2 to 1.5)

V_hyper (%)

0.0 (-0.2 to 0.3)

0.0 (-0.1 to 0.1)

0.0 (-0.6 to 0.6)

0.0 (-0.1 to 0.1)

-0.1 (-0.7 to 0.6)

M_total (g)

3.9 (-23.4 to 31.2)

4.7 (-19.3 to 28.8)

4.2 (-21.8 to 30.3)

1.9 (-32.7 to 36.5)

1.0 (-34.4 to 36.5)

M_non (%)

-0.1 (-1.5 to 1.4)

-0.2 (1.1 to 0.7)

0.1 (1.0 to 1.1)

-0.1 (-1.3 to 1.2)

0.1 (-1.2 to 1.4)

M_poor (%)

-0.5 (-2.5 to 1.6)

-0.4 (-1.4 to 0.6)

0.1 (-1.5 to 1.2)

0.2 (-1.7 to 2.2)

-0.1 (-1.8 to 1.7)

M_normal (%)

0.5 (-1.5 to 2.5)

-0.6 (-0.8 to 1.9)

0.1 (-1.5 to 1.7)

-0.2 (-2.0 to 1.7)

0.0 (-1.6 to 1.5)

M_hyper (%)

0.0 (-0.1 to 0.1)

0.0 (0.0 to 0.0)

0.0 (-0.2 to 0.2)

0.0 (-0.1 to 0.1)

0.0 (-0.3 to 0.3)

V_gas (ml)

12.1 (-42.8 to 67.0)

20.4 (-32.6 to 73.4)

14.2 (-46.3 to 74.7)

1.2 (-37.3 to 39.6)

8.5 (-30.2 to 47.2)