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Related to central ray: cephalad, collimation, decubitus, axial projection, scatter radiation
  • noun

Synonyms for Cr

a hard brittle multivalent metallic element

References in periodicals archive ?
By applying the "depth-of-focus" principle commonly used in photography, the KAMRA[TM] inlay controls light transmission, allowing only central rays to reach the retina through a fixed 1.
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