Iridium-192 brachytherapy

A remotely controlled machine moves the sealed source through applicators or catheters placed in the treatment area. The source pauses at planned positions, then returns to the shielded machine, so it is not left in the body after a treatment session.

The care team first positions an applicator, needle or narrow catheter near the target. Imaging shows its relationship to the tumour and nearby organs. A computerised plan sets where the source stops and how long it remains at each position, shaping the radiation around the target.

Iridium-192 can be used for cancers in several body sites, including the cervix, womb, vagina and prostate. The applicator and treatment schedule differ by body site. Some procedures need anaesthesia or sedation; others use an applicator placed in a treatment room.

Check the preparation instructions for food, fluids, medicines and bowel or bladder care. Tell the team about blood-thinning medicines, allergies, pregnancy possibility, implanted devices and any trouble lying in the required position. Do not stop prescribed medicine unless the clinical team directs you.

Remain still while the source is active and use the room communication system if you feel unwell. Once the source has returned to the afterloader, staff can enter and remove or secure the applicator. Follow the written advice on washing, activity, pain relief and sexual activity afterward.

Call the treatment unit urgently for heavy bleeding, fever, escalating pain, inability to urinate, persistent vomiting, sudden swelling, or foul-smelling discharge. Emergency assessment is appropriate for severe breathing difficulty, collapse or rapidly worsening weakness.

Site-specific irritation can affect the bladder, bowel, skin or treated passage. Report symptoms that interfere with drinking, eating, sleep or normal movement, even when they began as mild discomfort.

Confirm the treatment aim, the type of applicator, whether anaesthesia is needed and whether the applicator stays between sessions. Ask which nearby organs may be irritated and what prevention or relief measures are available.

You can also ask how the plan is checked, when follow-up occurs and which telephone number to use at night or on a weekend.