mottle

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mottle

[′mäd·əl]
(medicine)
An effect that occurs during radiological imaging when the dose of radiation is reduced to a level where quantum effects can be observed.

mottle

1. The pattern or arrangement of spots and cloudings forming a mottled surface, esp. in marble, or in wood veneer as a result of unusual variation in fiber growth or fiber arrangement. Also see fiddleback, quilted figure, blister figure. 2.See mottling.
References in periodicals archive ?
By using a more sensitive film or by producing more light in the screen, fewer detected x-rays are necessary to darken the film, and thus quantum mottle becomes more pronounced.
Quantum mottle is inherent in the radiographic imaging process and cannot be totally eliminated.
The illustrative analogy described in this article shows the effect of discrete sampling on pattern recognition to help demonstrate the concept of quantum mottle.