quantum sink

quan·tum sink

in radiologic imaging, the stage at which statistical information reaches its lowest level because of a low photon flux.
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Using an illustrative analogy, this article explains the concept of quantum mottle and defines the quantum sink in an imaging chain.
Because the recording step limits the information content of the final image, this step becomes the quantum sink. The quantum sink denotes the operation in which quantum mottle has the major influence upon image resolution.
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