Patient-specific dosimetry for intracavitary 32P-chromic phosphate colloid therapy of cystic brain tumours

Purpose32P-chromic phosphate colloid treatments of astrocytoma and craniopharyngioma cystic brain tumours in paediatric patients are conventionally based on a sphere model under the assumption of uniform uptake. The aims of this study were to determine the distribution of the absorbed dose delivered by 32P on a patient-specific basis and to evaluate the accuracy with which this can be predicted from a pretherapy administration of 99mTc-Sn …