Brachytherapy beads: clarify what is being offered

Clinical teams may instead use terms such as seeds, pellets, capsules, or a source that moves through an applicator, and those formats are not interchangeable.

Brachytherapy places a sealed radioactive source within or close to the treatment target. For temporary treatment, an afterloader can send a source through tubes or an applicator for a planned session, then withdraw it. For implanted treatment, small sources are positioned in tissue and left in place while their radiation weakens over time.

The word bead can also describe particles used in other treatments, including delivery through blood vessels. That is a different technique from conventional seed or applicator brachytherapy. The written treatment name and device description are the safest way to understand what your oncology team intends.

Ask to see the formal procedure name and whether the sources are temporary or implanted. Confirm where they will be positioned, how imaging guides placement, whether an anaesthetic is needed, how long an applicator or catheter stays, and whether another treatment will be given alongside it.

Follow the team's preparation instructions for medicines, eating, drinking, bowel or bladder preparation, and travel home. If a source remains implanted, keep the written radiation-safety advice accessible. It may address close contact, travel, medical emergencies, and what to do if a source is seen outside the body; never handle a suspected source with bare hands.

Call the oncology service promptly for fever, increasing pain, unusual or foul-smelling discharge, worsening bleeding, difficulty urinating, persistent vomiting, or a catheter or applicator that moves. Use the dedicated radiation-safety contact if you find an object that could be an implanted source.

Emergency assessment is appropriate for heavy bleeding, collapse, severe breathing difficulty, sudden confusion, uncontrolled pain, or complete inability to pass urine with painful swelling. Tell emergency staff that you recently had internal radiotherapy and whether the paperwork says a source remains implanted.

Ask: What is the exact name of the source and procedure? Will anything radioactive remain in my body? How is the dose planned and checked? Which side effects relate to the treated organ? What restrictions apply around family members, and whom should I call after hours if a device shifts or a source is passed?