NAC459.466. “Light field” defined.

Latest version.

“Light field” means that area of the intersection of the light beam from the beam-limiting device and one of the set of planes parallel to and including the plane of the image receptor, whose perimeter is the locus of points at which the illumination is one-fourth of the maximum in the intersection.

[Bd. of Health, Radiation Control Reg. § 6.2.33, eff. 2-28-80]

                    
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