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Table 2 The centroid shifts of the GTV PET and IGTV 10 in 3D directions (cm)

From: Comparison of primary target volumes delineated on four-dimensional CT and 18 F-FDG PET/CT of non-small-cell lung cancer

Lesion

GTVPET15%

GTVPET20%

GTVPET25%

GTVPET30%

GTVPET35%

GTVPET40%

GTVPET2.0

GTVPET2.5

1

1.10

1.07

1.04

1.09

1.08

1.07

1.08

1.07

2

0.67

0.75

0.85

0.94

1.05

1.14

0.68

0.79

3

0.77

0.75

0.77

0.74

0.70

0.73

0.78

0.72

4

0.33

0.34

0.37

0.38

0.37

0.35

0.35

0.38

5

0.38

0.28

0.23

0.23

0.25

0.22

0.28

0.23

6

0.09

0.16

0.18

0.18

0.20

0.20

0.12

0.14

7

1.13

1.29

1.36

1.30

1.43

1.55

1.16

1.30

8

0.76

0.75

0.76

0.75

0.79

0.77

0.75

0.73

9

0.22

0.36

0.48

0.54

0.59

0.63

0.14

0.24

10

0.33

0.29

0.33

0.32

0.34

0.35

0.12

0.23

11

0.20

0.32

0.36

0.43

0.46

0.47

0.31

0.37

12

1.16

1.14

1.14

1.11

1.13

1.17

1.17

1.14

13

0.32

0.36

0.41

0.48

0.49

0.50

0.44

0.48

14

1.01

1.02

1.11

1.17

1.29

1.52

0.96

0.98

15

-

0.15

0.17

0.25

0.26

0.22

0.18

0.42

16

-

2.01

1.95

2.02

2.01

2.01

2.01

1.98

17

0.43

0.38

0.43

0.44

0.50

0.52

0.33

0.39

Median

0.43

0.38

0.48

0.54

0.59

0.63

0.44

0.48

sd

0.37

0.50

0.49

0.49

0.50

0.54

0.51

0.49

  1. sd, standard deviation.