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Table 3 The standard deviation of the GTV volume delineations undertaken by clinicians for each patient for each modality

From: Multimodality imaging with CT, MR and FDG-PET for radiotherapy target volume delineation in oropharyngeal squamous cell carcinoma

Patient

Standard Deviations (cm3)

CT

CT-MR

MR

1

3.59

4.17

3.33

2

3.95

5.19

3.32

3

4.61

3.75

1.36

4

4.36

4.82

1.15

5

4.29

3.16

3.37

6

2.01

2.81

0.48

7

1.84

2.84

2.15

8

8.65

4.87

2.99

9

5.63

3.91

2.40

10

1.62

0.83

0.93

11

8.59

4.42

5.93

Mean

4.47

3.71

2.49