afterloader
An afterloader is a medical device used in brachytherapy to remotely place and retrieve radioactive sources within or near a patient’s tumor. It enables clinicians to deliver precise, localized radiation doses while minimizing occupational exposure. Afterloaders are commonly used in treatments for gynecologic, prostate, breast, head and neck, and certain skin cancers.
Modern afterloaders are usually electronic remote afterloaders that deploy a small sealed radioactive source (often iridium-192
Key components include the shielded source storage, drive mechanism, applicator connections, treatment planning interface, and safety
Advantages of afterloading include improved dose conformity, reduced staff exposure, and flexible treatment planning. Limitations and