Table 2 Nodule volume changes according to the follow-up period

No. of nodules

105

91

71

78

101

18

5

Vt^a

8.65 (4.93–16.6)

3.74 (2.01–5.67)

2.41 (1.36–3.81)

1.79 (0.70–2.97)

1.09 (2.52–0.49)

0.84 (0.20–3.18)

0.37 (0.07–2.55)

Va^a

8.38 (4.76–13.46)

2.39 (1.43–4.19)

1.31 (0.72–2.42)

0.73 (0.16–1.41)

0.28 (0.09–0.94)

0.23 (0.00–1.25)

0.03 (0.00–1.22)

Vv^a

0.29(−1.07–4.00)

1.05 (0.38–2.39)

1.07 (0.36–2.17)

0.59 (0.21–1.52)

0.51 (0.14–1.65)

0.47 (0.11–1.94)

0.37 (0.05–1.33)

Vv increase ≥50%, n (%)

0

0

18 (25.4)

15 (19.2)

26 (25.7)

5 (2.8)

2 (0.4)

Vt increase ≥50%, n (%)

0

0

0

0

4 (4.0)

0

0