Table 4. Maximum dose (Gy) to auditory structures.
Treatment | Ipsilat. inner ear | Contra. inner ear | Ipsilat. middle ear | Contra. middle ear |
SMLC | 64.8±9.2 | 53.0±7.7 | 55.0±8.9 | 48.3±6.7 |
HT | 49.1±7.1 | 47.4±6.9 | 45.4±7.7 | 46.5±5.1 |
contra., contralateral; HT, helical tomotherapy; ipsilat., ipsilateral; SMLC, segmental multileaf collimator; V30, volume receiving ≥30 Gy.