collimator (redirected from Colluminator)

collimator

[kol′imā′tər]

Etymology: L, collinare, to bring into alignment

a device for limiting the size and shape of a radiation beam. It is used to reduce scatter radiation, thereby decreasing the patient dose needed and increasing radiographic quality.

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collimator [kol´ĭ-ma″ter]

a diaphragm or system of diaphragms made of an absorbing material, designed to define and restrict the dimensions and direction of a beam of radiation.

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collimator (kol´imātur),

n a diaphragm or system of diaphragms made of an absorbent material and designed to define the dimensions and direction of a beam of radiation.

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collimator

a device, sometimes a diaphragm, or series of diaphragms, which control the direction and the dimensions of the x-ray beam.

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collimator 

An optical apparatus for producing parallel rays of light. It usually consists of a positive achromatic lens, with an illuminated object (a slit, a graticule, a scale, etc.) placed at one of its focal points, so that light from any point on the object emerges from the collimator parallel.