High Dose Rate Brachytherapy
This example is for prostate cancer. This procedure is useful in sarcomas, thoracic cancers, and other cancers.

Internal radiation source is placed inside your body. In certain cases, radiation therapy is best delivered by brachytherapy. This technique involves placing special catheters at the time of surgical resection in the bed of the surgical wound. The surgical incision is then allowed to heal for about 5 days and then radioactive seeds are loaded into the catheters to deliver radiation therapy. The seeds are left in place usually for another 5 days and then the catheter and seeds are removed. This is a particularly useful modality for recurrent sarcomas in which external beam radiation has already been administered in the past.