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Table 1 Volumetric and spatial comparison of PTV4DCT1 and PTV4DCT2

From: Reproducibility of target volumes generated using uncoached 4-dimensional CT scans for peripheral lung cancer

Pat. PTV4DCT1 (cm3) PTV4DCT2 (cm3) PTV4DCT1 – PTV4DCT2 (cm3) PTV4DCT1 – PTV4DCT2 (%) 3D center of mass displacement (mm)
1 28.1 29.3 1.2 4.2 1.7
2 16.2 16.9 0.7 4.5 1.9
3 39.3 38.4 1.0 -2.5 3.2
4 3.5 4.1 0.6 15.6 1.1
5 20.8 21.2 0.5 2.2 2.0
6 3.0 3.3 0.3 11.3 1.2
7 30.5 29.1 1.5 -4.8 1.3
8 9.2 10.0 0.8 8.5 2.6
9 13.9 13.6 0.3 -1.9 0.4
10 29.6 30.3 0.7 2.4 0.8
11 19.7 21.0 1.3 6.7 0.7
12 67.0 68.3 1.3 1.9 0.8
13 13.5 10.9 2.6 -19.4 3.7
14 21.0 20.7 0.3 -1.3 0.6
15 23.0 21.5 1.5 -6.7 1.0
16 13.8 13.5 0.3 -2.0 0.5
17 22.9 25.3 2.4 10.5 1.3
18 63.0 57.8 5.2 -8.3 3.5
19 21.1 21.2 0.2 0.8 1.4
20 23.5 21.9 1.6 -6.8 0.4
21 15.8 16.0 0.3 1.6 1.2
22 26.2 24.5 1.8 -6.8 1.6
23 10.6 10.1 0.5 -4.3 1.2
24 15.6 17.4 1.8 11.8 1.7
25 63.1 64.1 1.0 1.5 0.3
26 45.7 44.9 0.8 -1.8 0.3
Mean ± SD    1.2 ± 1.1 cm 3 0.7 ± 7.6% 1.4 ± 1.0 mm