A technique is described for post-operative X irradiation of the cerebrospinal axis for medulloblastoma in childhood. Pathological and clinical data indicate that a likely site of tumour recurrence is the posterior cranial fossa, and the method is an attempt at uniform irradiation of this region, while ensuring that the irradiation of cranium and spine may be accurately and safely apposed.
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Jones et al. (1957) studied this question.
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