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A linear accelerator, often called a LINAC, is a machine used in external beam radiation therapy. It creates high-energy radiation beams that can be aimed at a specific treatment area. Cancer care teams use it to treat tumors while limiting exposure to nearby healthy tissue as much as possible. Treatment planning is customized based on the tumor location, size, and type of radiation needed.
read more about linear accelerator ...A LINAC uses electricity to speed up particles and produce radiation beams. The machine can shape and aim the beam from different angles around the body. Imaging, treatment planning software, and positioning tools help the team line up the treatment area. The patient does not feel the radiation while the beam is being delivered.
A linear accelerator can be used for external beam radiation therapy in cancer treatment. It can treat tumors in areas such as the breast, lung, prostate, head and neck, brain, and other body sites. The radiation oncologist decides whether LINAC treatment fits the diagnosis and care plan. The machine can also support specialized techniques such as intensity-modulated radiation therapy or stereotactic treatments.
Before treatment begins, the care team maps the treatment area and creates a plan. During each session, the patient lies on a treatment table while the machine moves around the body. The team watches from a nearby control area and can communicate through audio or video. A session can be short, but setup and positioning take time.
Radiation therapy teams perform quality checks to confirm that the machine, treatment plan, and patient position match the prescribed dose. Staff verify identity, treatment site, dose, and setup before treatment. The machine is designed to deliver radiation only under controlled conditions. Report new or worsening symptoms to the care team during the treatment course.
No. External beam radiation from a LINAC does not make you radioactive after the treatment session. You can be around other people unless your care team gives different instructions for another treatment type.
No. You should not feel the radiation beam during treatment. Some side effects can develop over time depending on the body area treated.
Positioning helps the radiation beam reach the planned treatment area. Even small setup changes can matter, so the care team uses marks, molds, imaging, or supports when needed.
LINACs are most closely linked with cancer radiation therapy. In selected cases, radiation teams can also use highly focused beams for teams can certain noncancer conditions.
LINAC (Linear Accelerator). RadiologyInfo.org. https://www.radiologyinfo.org/en/info/linac. Date Accessed May 26, 2026.
External Beam Radiation Therapy for Cancer. National Cancer Institute. https://www.cancer.gov/about-cancer/treatment/types/radiation-therapy/external-beam. Date Accessed May 26, 2026.
Radiation Therapy. Mayo Clinic. https://www.mayoclinic.org/tests-procedures/radiation-therapy/about/pac-20385162. Date Accessed May 26, 2026.
External Beam Radiotherapy. Macmillan Cancer Support. https://www.macmillan.org.uk/cancer-information-and-support/treatment/types-of-treatment/radiotherapy/external-beam-radiotherapy. Date Accessed May 26, 2026.
External Beam Radiotherapy. South Tees Hospitals NHS Foundation Trust. https://www.southtees.nhs.uk/services/cancer-institute/radiotherapy/your-radiotherapy-treatment/external-beam-radiotherapy/. Date Accessed May 26, 2026.