X-ray field means that area of the intersection of the useful beam and any 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 exposure rate is one-fourth of the maximum in the intersection.
X-ray field means that area of the intersection of the useful beam and any one of the sets of planes
X-ray field means, for diagnostic purposes, that area of the intersection of the useful beam and any one of the set of planes parallel to and including the plane of the image receptor. The edge of the x-ray field is defined as the locus of points at which the exposure is 25 percent of that at the center of the x-ray field.
More Definitions of X-ray field
X-ray field means that area of the intersection of the useful beam and
X-ray field means that area of the intersection of the useful beam