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Table 6 Number of exceedings of the considered planning criteria

From: Image guidance and positioning accuracy in clinical practice: influence of positioning errors and imaging dose on the real dose distribution for head and neck cancer treatment

Organ

Criteria

Original plan

Extreme plan

Realistic plan

Imaging plan

Spinal chord

D2% < 42Gy

0

1

0

0

Parotid glands

Mean < 25Gy

4

9

7

8

V20Gy < 60%

0

2

1

2

Larynx

D2% < 63Gy

2

2

2

3

Mean < 44Gy

0

0

0

0

Vocal chords

D2% < 25Gy

2

9

4

5

Total

 

8

23

14

18