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central ray |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson | 0.43 sec. |
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central ray the center of the area of radiation created as the x-ray beam diverges. The further from the center of the ray one is, the more distortion there is and, if the beam is not correctly centered over the part to be viewed, there will be more distortion still. The central point is the point of minimum distortion. |
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