A linear accelerator is also used for Intensity-Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), Stereotactic Radiosurgery (SRS) and Stereotactic Body Radio Therapy (SBRT). The linear accelerator is used to treat all parts/organs of the body. It delivers a uniform dose of high-energy x-ray to the region of the patient’s tumor. These x-rays can destroy the cancer cells while sparing the surrounding normal tissue.
The linear accelerator uses microwave technology (similar to that used for radar) to accelerate electrons in a part of the accelerator called the “wave guide”, then allows these electrons to collide with a heavy metal target. As a result of the collisions, high-energy x-rays are scattered from the target. A portion of these x-rays is collected and then shaped to form a beam that matches the patient’s tumor. The beam comes out of a part of the accelerator called a gantry, which rotates around the patient. The patient lies on a moveable treatment couch and lasers are used to make sure the patient is in the proper position. Radiation can be delivered to the tumor from any angle by rotating the gantry and moving the treatment couch. Request a Call Back
The technology is incredibly important because cancer tumors and lesions don’t stay in the exact same place after each radiation therapy session. When a patient gains or loses weight or experiences other physical changes, organs can shift even slightly. So it’s imperative that before each treatment, physicians can identify exactly where cancerous cells end and healthy cells begin.
The Varian IX linear accelerator is image-guided, which means it uses both x-ray and cone-beam CAT scan technology to search for the cancer. Previous versions of linear accelerators don’t have integrated x-ray imaging, which doesn’t allow real-time localization of the target.
The Varian Trilogy linear accelerator does everything the IX linear accelerator does, and it offers cutting edge stereotactic radio surgery, which is specifically designed to seek out and treat small targets in areas outside the head.
The best usage of LINAC technology may be its ability to target larger brain and body cancers with less damage to healthy tissues. LINAC systems are able to treat larger tumors and larger affected areas than the Gamma Knife. Areas other than the brain can be treated with a LINAC system. Linear accelerator systems may also be used for external beam radiation therapy.Post a Query
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