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An MRI linear accelerator (LINAC) can image tumors and organs on-table. MRI-guided radiotherapy (MRgRT) is limited due to high costs and the personnel costs needed for each treatment and because clinical benefit compared to conventional radiotherapy platforms has not been established. [36]
The design of a linac depends on the type of particle that is being accelerated: electrons, protons or ions. Linacs range in size from a cathode-ray tube (which is a type of linac) to the 3.2-kilometre-long (2.0 mi) linac at the SLAC National Accelerator Laboratory in Menlo Park, California.
Varian Medical Systems is an American radiation oncology treatments and software maker based in Palo Alto, California.Their medical devices include linear accelerators (LINACs) and software for treating cancer and other medical conditions with radiotherapy, radiosurgery, proton therapy, and brachytherapy.
Elekta is a global Swedish company that develops and produces radiation therapy and radiosurgery-related equipment and clinical management for the treatment of cancer and brain disorders. Elekta has a global presence in more than 120 countries, with over 40 offices around the world and about 4,700 employees.
With greater computing power and more efficient treatment planning algorithms, the need for simpler treatment planning techniques – such as "forward planning", in which the planner directly instructs the linac on how to deliver the prescribed treatment – is reduced. This has led to increased interest in flattening filter free (FFF) treatments.
Linac units quickly became favored devices for conventional fractionated radiotherapy but it lasted until the 1980s before dedicated Linac radiosurgery became a reality. In 1982, the Spanish neurosurgeon J. Barcia-Salorio began to evaluate the role of cobalt-generated and then Linac-based photon radiosurgery for the treatment of AVMs and ...
A recent study suggests that taking a vitamin D supplement could lower your risk for dementia as you age, especially for women. Here's what a doctor says.
A linear accelerator (linac) is built into the top part of the gantry in the photo at the right. The rectangular screen on the right side of the gantry is a cone beam x-ray detector, which is used to help position a patient prior to treatment.