Prostate brachytherapy involves placing radioactive sources in the prostate. This way, the tumour receives the maximum dose of radiation while the neighbouring healthy tissue receives a minimal dose.
Prostate brachytherapy can be used as the sole treatment modality or in combination with external beam radiotherapy, depending on the stage of the disease.
High Dose Rate [HDR] brachytherapy is the choice of treatment due to the ability to conform the radiation dose to the shape of the prostate gland due to the short range effect of the radiation source. This results in a steep dose gradient which allows a high radiation dose to be delivered to the tumour, while sparing the surrounding normal tissues.