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HDR Remote Afterloader The high-dose rate (HDR) Remote Afterloader delivers radiation “from the inside out. ”This treatment is a temporary form of brachytherapy which works by placing a source of radiation directly in, or next to, the cancerous tumor inside the body for only a few minutes. The procedure is usually repeated once per week for up to five weeks. The treatment is often performed on an outpatient basis, meaning an overnight stay in the hospital is usually not needed. In HDR brachytherapy, accurate placement and complete control are of utmost importance. The HDR Afterloader's computer-based management system allows for proper placement, replacement and dose control throughout the process. The radiation therapy team at the W. Temple Webber Cancer Center provides HDR brachytherapy by creating a customized treatment plan to determine the precise placement and dose of radiation to be delivered to the tumor. This ensures the tumor receives the most effective dose to kill the cancer cells while also reducing the risk of any unnecessary damage to healthy tissue and organs, therefore reducing potential side effects. The remote afterloader houses a pellet-sized Iridium-192 source attached to the end of a cable. The source cable is remotely sent out of the afterloader and stops at specific positions inside an applicator for an exact time at each spot. At the end of treatment, the source cable is removed from the applicator and retracted back into the afterloader.