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Oncology

Radiotherapy

Cancer treatment using high-energy radiation to kill tumour cells.

Radiotherapy uses ionizing radiation (X-rays, gamma rays, or particles like protons) to damage the DNA of cancer cells. Modern external-beam techniques include IMRT (intensity-modulated), IGRT (image-guided), SBRT (stereotactic body RT), and SRS (stereotactic radiosurgery). Brachytherapy places radiation sources inside or next to the tumour. Modality selection depends on tumour site, size, and stage.

General information, not medical advice

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