LINAC, or Linear Accelerator, is a sophisticated medical device used in radiation oncology to deliver high-energy X-rays or electron beams precisely to cancerous tissues while minimising exposure to surrounding healthy tissues. It is the cornerstone of modern external beam radiotherapy and is employed in the treatment of various cancers, including head and neck, breast, lung, prostate, brain, and pediatric malignancies.

The LINAC system generates high-energy radiation that can be shaped and modulated to conform to the three-dimensional shape of the tumour. Advanced technologies, such as Intensity-Modulated Radiation Therapy (IMRT), Image-Guided Radiation Therapy (IGRT), and Stereotactic Radiosurgery (SRS), enhance the accuracy and effectiveness of treatment. These techniques allow higher doses of radiation to the tumour while protecting critical organs, reducing side effects, and improving clinical outcomes.

Treatment planning begins with detailed imaging studies such as CT, MRI, or PET scans to delineate the tumour and surrounding organs. Radiation oncologists, medical physicists, and dosimetrists collaborate to design an individualised treatment plan that ensures optimal dose distribution. The patient is positioned accurately on the treatment couch, and daily imaging verification ensures precision and reproducibility during each session.

LINAC treatment is non-invasive and painless. The number of sessions and duration depend on the type, location, and stage of the cancer. The procedure is delivered on an outpatient basis, allowing patients to continue their daily activities while undergoing therapy. Safety protocols, quality assurance measures, and real-time monitoring ensure the highest standards of patient protection. By combining precision technology with expert clinical care, LINAC therapy provides effective tumour control, preserves healthy tissue, and improves survival rates. It is a critical component of comprehensive cancer management, offering patients advanced, safe, and targeted radiation treatment for improved quality of life.