Table 1 Patient characteristics

Total (n)

20

Average age (years)

51.5 (range 24–82)

Gender (n)

 Male

16

 Female

4

Mean cochlea volume (cm³)

 Left cochlea

0.215 (range 0.09–0.54)

 Right cochlea

0.221 (range 0.08–0.45)

Mean prescription dose (Gy)

69.78 (range 66–70)

Concurrent chemotherapy (n)

 Cisplatin

12

 Carboplatin (+ taxol/5-FU)

5

 None

3

Performance status before RT start (n)

 ECOG 0

12

 ECOG 1

6

 ECOG 2

2

T status (n)

 T1

4

 T2

8

 T3

2

 T4

6

N status (n)

 N0

10

 N1

3

 N2

5

 N3

2

M status (n)

 M0

19

 M1

1