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BEAM

 
brain electric activity map; trademark name for a map of brainwave activity derived from a computerized enhancement of electroencephalographic records.

beam

 [bēm]
a unidirectional, or approximately unidirectional, emission of electromagnetic radiation or particles.
useful beam in radiology, that part of the primary radiation that is permitted to emerge from the tubehead assembly of an x-ray machine, as limited by the aperture or port and accessory collimating devices.
beam splitter a device that reflects light from the output phosphor of an image intensifier to a photographic recording. Called also image distributor.

beam

(bēm),
1. Any bar the curvature of which changes under load; in dentistry, frequently used instead of "bar."
2. A collimated emission of light or other radiation, such as an x-ray beam.
[O.H.G. Boum]

beam

Etymology: ME, beem, tree
1 a bedframe fitting for pulleys and weights, used in the treatment of patients requiring weight traction. See Balkan traction frame.
2 (in radiology) the primary beam of radiation emitted from the x-ray tube.

BEAM

[bēm, bē′ē′ā′em′]
abbreviation for brain electric activity map.

beam

Drug slang
A regional synonym for cocaine.
 
Radiation oncology
A focused stream of particles or electromagnetic radiation which is focused in a single direction or body region as part of a therapeutic regimen.

BEAM

Abbreviation for:
BCNU, etoposide, cytarabine, melphalan (a chemotherapy regimen)
Biomedical Equipment Assessment & Management (Medspeak-UK)
brain electrical activity mapping

beam

(bēm)
1. Any bar with a curvature that changes under load.
2. dentistry Synonym(s): bar (2) .
3. A collimated emission of light or other radiation, such as an x-ray beam.
[O.H.G. Boum]

beam

(bēm)
1. Any bar the curvature of which changes under load; in dentistry, frequently used instead of "bar."
2. A collimated emission of light or other radiation.
[O.H.G. Boum]

beam,

n a stream or approximately unidirectional emission of electromagnetic radiation or particles.
beam, central,
n the center of the beam of roentgen rays emitted from the tube.
beam, useful,
n the part of the primary radiation that passes through the aperture, cone, or other collimator.

beam

a unidirectional emission of electromagnetic radiation. See also x-ray.

external beam therapy
radiotherapy in which the source is at a distance from the patient, e.g. orthovoltage, cesium-137, cobalt-60 or linear accelerator.
beam limitation
restriction of the divergent beam as it appears from the tube window by a lead plate or cone or a light beam diaphragm located at the window.
primary beam
the radiation beam as it passes through the window of the x-ray tube and before it is modified by extra-tube devices.
References in periodicals archive ?
Satellite signals beamed down to military warplanes, unmanned aircraft, ground stations or vehicles are affected by a range of disruptive phenomena--enemy jammers, atmospheric white noise or weather.
The pictures were hurriedly beamed down so Nasa could determine whether Discovery's belly sustained any launch damage from ice or insulating foam from the fuel tank.
Beamed down from a higher culture to sit in judgment alongside Ladette to Lady deputy headmistress Rosemary Shrager, former Times restaurant critic Jonathan Meades was excruciatingly out of place.
And as the autumn sun beamed down through the trees, they were hard at work installing the massive chillers needed to create the rink.
Brothers Luke and Jake Shepherd, aged seven and four, from Brookfield, gazed in star-struck amazement as the two aliens beamed down on them.
NASA's Earth Observing System (EOS) is responsible for capturing and managing the terabytes of data beamed down every day by 5 orbiting satellites, observing the land surface, oceans, biosphere and atmosphere of the Earth.
Until the Queer Eye beamed down on it, Bravo's biggest star was James Lipton, whose weekly fawnfest, Inside the Actors Studio, was the only thing drawing an audience.
Monsters, Bond girls, sci-fi stars and cult characters have beamed down to the Midlands for a wacky weekend.
As the sun beamed down Andrey Bezruchenko, part of the visiting Moscow State Circus, attempted to make the longest distance somersault from a trampoline.
CAPTAIN James T Kirk must have beamed down a a bookie near you judging by the Grand National betting.
Their solution would permit satellite companies to broadcast "local-to-local" so long as they beamed down all the area's stations, a satellite version of cable's must-carry rules.
Kirk beamed down to some backward but Eden-like planet, took up with a cute alien gal and tried to prevent the place from being ruined by some off-world threat.