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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 ?
These microwaves would then be beamed down to Earth out of the bottom end of the 'cocktail glass'.
Thousands of Star Trek fans who beamed down to London's Albert Hall yesterday for a three day Trekkie convention got some bad news.
With data beamed down from the shuttle, researchers at the University of Michigan in Ann Arbor created two images depicting the amount and type of vegetation in a 15-by 20-mile region around Raco Air Force Base, near the southeast shore of Lake Superior.
This melodramatic installation, illuminated by soft spotlights beamed down on each sphere, emphasized Chihuly's conception of space.
been beamed down from the Planet of the Goofy Smiles.
As the sun beamed down on their entertainment, there were sandwiches and the customary glasses of Pimms for the ladies to enjoy, as well as a chance to have a little 'utter on the races.
Chefs used cranes to break off chunks of the chocolate and hand them out to the crowd as the sun beamed down.
LOOKING like it's beamed down from a more advanced civilisation, this slick beast is a new concept in, er, concept cars.
WITH white furniture and glass tables, Glasgow's Alaya restaurant looks as though it was beamed down from the set of some space age movie.
The sun beamed down on music lovers as the music started at Glastonbury Festival yesterday.
Cal State Northridge students will help design computer programs to interpret data beamed down from a NASA satellite instrument that measures the speed and direction of ocean winds.
Footage of Chile's friendly against Ukraine last night was beamed down to the miners through a fibre optic cable sent down a bore hole.