Radiation therapy generally consists of external beam radiation therapy and internal radiation therapy (brachytherapy).

• External beam radiation therapy targets the tumor from a certain distance following a well-designed treatment plan.
• Internal radiation therapy, also known as brachytherapy or 'internal radiation,' involves placing a radioactive source close to or inside the tumor tissue. This method enhances the dosage received by the tumor while minimizing the dose and side effects on healthy tissues. It can be combined with external beam radiation therapy.

Brachytherapy is not suitable for tumors that are too large or complex in shape. The method of brachytherapy used here is high-dose-rate remote afterloading brachytherapy, using an Ir-192 source, commonly applied for localized intensification in cervical and endometrial cancer.

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