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. 2012 Aug;85(1016):e537–e543. doi: 10.1259/bjr/23807619

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.