linear accelerator

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lin·e·ar ac·cel·er·a·tor (LINAC),

a device imparting high velocity and energy to atomic and subatomic particles; an important device for radiation therapy.

linear accelerator (LINAC)

Etymology: L, linea, line, accelerare, to quicken
an apparatus for accelerating charged subatomic particles, used in radiotherapy, physics research, and the production of radionuclides. A pulsed electron beam generated by an electron gun passes through a long, straight vacuum tube containing alternating hollow electrodes. The electrodes are arranged so that, when their high-frequency potentials are properly varied, the electrons passing through the tube receive successive increments of energy. The electrons are stopped abruptly by a heavy metal target at the end of the tube and directed by a collimator to deliver supervoltage x-rays to the patient receiving radiotherapy.
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Linear accelerator

linear accelerator

A device that accelerates radioactive particles and beams to body regions affected by malignancy, while minimising damage to normal tissue. Linear accelerators use electrodes and gaps arranged in a straight line, proportioned so when electrical potentials are varied with the proper amplitude and frequency, particles passing through the waveguide receive successive increments of energy, and are therefore accelerated; the device delivers therapeutic radiation in the range of 4 to 25 million volts, as either intense radiation or high-energy electron beams—most commonly, 60Co, delivering 2–10 Gy/min (200–1,000 rads/min) at the centre of an internal malignancy. 

Types
External beam radiation therapy, stereotactic body radiotherapy, stereotactic radiosurgery.

Indications
Head and neck cancer, prostate cancer, Hodgkin lymphoma and other lymphoproliferative malignancies, seminomas and localised breast cancer, in combination with an excision of malignant lumps.

lin·e·ar ac·cel·er·a·tor

(lin'ē-ăr ak-sel'ĕr-ā-tŏr)
A device imparting high velocity and energy to atomic and subatomic particles; an important device for radiation therapy.

linear accelerator

A machine that uses high voltages to accelerate particles so that they can be used in RADIOTHERAPY.
References in periodicals archive ?
Lot 3 Upgrade of an existing linear accelerator (1 piece).
Twitter - #EINews: @ECRI_Institute releases results of user survey on linear accelerators ly.
com)-- RadParts, a leading supplier of linear accelerator parts, announces that it has started construction with its sister company, Acceletronics, on a new linear accelerator refurbishment and testing facility.
Varian software is being used by Ohio State University clinicians to plan and manage radiotherapy treatments delivered on a Siemens medical linear accelerator
Radiotherapy manager Nest Bowl said: ``The provision of a local service has made life easier for patients, and the third linear accelerator means many more patients can be treated.
Table 7: Leading Players in Global Linear Accelerators Market (2005): Percentage Breakdown by Value Sales for Varian, Siemens, Elekta, and Others (includes corresponding Graph/Chart) II-14
com)-- RadParts is pleased to announce their November specials which help to reduce the cost of linear accelerator parts.
The Royal College of Radiologists and the National Radiotherapy Advisory Group currently recommend that all linear accelerators need to be replaced every 10 years.
Each linear accelerator is capable of carrying out 10,000 treatment sessions each year.
The subject of the tender is the supply, installation and commissioning of two new, unused linear accelerators for radiotherapy using conformal radiation techniques IMRT, VMAT, IGRT, SBRT and FFF (volumes without homogenization filter) with anti-collision systems as a radiation table positionable in 6 directions (3 translational and three rotational).
Linear Accelerators II-46 Comparative Assessment of Cobalt-60 Teletherapy Units and Linear Accelerators II-46 Benefits of LINACs over Cobalt 60 Units II-47 Treatment Planning System: An Innovative Technique in Radiation Therapy II-47 Radiation Therapy Simulator II-47 CT Simulation Systems II-48 Major Systems of Radiation Therapy Simulator II-49 Mechanical Systems II-49 Principles of Operations II-50
After a few years, he first joined the Acceletronics team as an engineer for their Varian linear accelerators (http://www.

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