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Dose to cochlea and heart by radiation delivery technique following craniospinal irradiation for childhood medulloblastoma
| Radiation delivery technique | Dose to 90% of the cochlea, % | Dose to 50% of the heart volume, % |
|---|---|---|
| Conventional x-ray beam |
101.2 |
72.2 |
| Intensity modulated x-ray beam |
33.4 |
29.5 |
| Proton beam | 2.4 | 0.5 |
Data from St Clair et al. [40].
