Brachytherapy

Brachytherapy is an advanced form of internal radiation therapy in which a radioactive source is placed directly inside or very close to the tumor. This allows a high dose of radiation to be delivered precisely to cancer cells while minimizing exposure to surrounding healthy tissues.

Unlike external beam radiation therapy, brachytherapy works from within the body. It is widely used for cancers such as cervical cancer, prostate cancer, breast cancer, endometrial cancer, and certain head and neck cancers. It is especially effective for tumors that are localized and well-defined.

The procedure involves placing radioactive material (in solid form such as seeds, wires, or capsules) temporarily or permanently into the tumor site using applicators or catheters. The radiation source remains in place for a specific duration depending on the treatment plan and is then removed in temporary cases, or left safely in the body in permanent implants.

Brachytherapy can be delivered in different ways, including high-dose-rate (HDR) and low-dose-rate (LDR) techniques. HDR brachytherapy is commonly done in multiple short sessions, while LDR involves continuous low-dose radiation over a longer period.

The treatment is performed under imaging guidance such as ultrasound, CT, or MRI to ensure accurate placement of the radioactive source. It is usually minimally invasive and may require anesthesia depending on the procedure type.

Benefits of Brachytherapy

• Delivers high radiation dose directly to the tumor
• Minimizes damage to surrounding healthy tissues
• Shorter overall treatment time compared to external radiation
• Highly effective for localized cancers
• Can be used alone or combined with other treatments
• Improved cosmetic and functional outcomes in some cancers

Who Needs Brachytherapy?

Brachytherapy is recommended for patients with localized cancers such as prostate, cervical, breast, uterine, and certain head and neck cancers. It is often used when precise, high-dose radiation is needed in a limited area.

Conclusion

Brachytherapy is a highly precise and effective internal radiation therapy that allows targeted cancer treatment with minimal impact on healthy tissues. It plays a vital role in modern oncology, especially for localized tumors requiring focused radiation delivery.

FAQs – Brachytherapy

Q1. Is brachytherapy painful?
 The procedure is usually not painful, as it is performed under anesthesia or sedation when needed.

Q2. How long does brachytherapy take?
 It may take a few minutes to a few hours per session, depending on the type (HDR or LDR).

Q3. Is brachytherapy safe?
 Yes, it is a safe and widely used cancer treatment performed under strict medical supervision.

Q4. Will the radioactive material stay in my body permanently?
 In some cases (LDR), small implants may remain permanently but become inactive over time. In other cases, they are removed after treatment.

Q5. What cancers are treated with brachytherapy?
 It is commonly used for prostate, cervical, breast, uterine, and some head and neck cancers.