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

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 ?
"The AEOI has a new project to build micro linear accelerators which can be used in hospitals," Salehi said on the sidelines of a forum in Tehran on Tuesday.
Basudev Dalmia, President Trustee, BIMR Hospital said, "The radiation beams from a linear accelerator can treat a tumour with near exact precision.
RadParts, Inc., a subsidiary of Acceletronics, Inc, has the most extensive independent inventory of spare parts for linear accelerators in the industry.
"Since we launched the global strategic partnership with Siemens last year, we have been steadily working to develop software interfaces that enable clinics with Siemens linear accelerators to manage patient care using Varian software," says Kolleen Kennedy, president of Varian's Oncology Systems business.
Acibadem Healthcare Group established its first radiotherapy center in Turkey in 2005, siting two Varian Clinac linear accelerators in Istanbul Kozyatagi Hospital.- TradeArabia News Service
``The new machine brings the total of linear accelerators up to nine,in line with our aim of having four such pieces of equipment for every million people we serve.''
Scientists at the Stanford Linear Accelerator Center used fiber-optic cables to transfer 6.7 gigabytes of data--the equivalent of two DVD movies--across 6,800 miles in less than a minute.
IMRT treatments are delivered using a sophisticated computer-controlled medical linear accelerator that is outfitted with a beam-shaping accessory called a multi-leaf collimator.
The cancer center has a $1.5 million linear accelerator with a multileaf colimator, which allows doctors to target radiation with pinpoint precision, sparing other organs.
In practice, the material to be coated becomes the target for a small linear accelerator in which the material to be implanted is the material that is passed through the accelerator.
Lawmaker asked when the linear accelerator would be purchased, speaking at a meeting of the parliamentary committee for social affairs, education, health, and culture on Nov 19.